Science with Transiting Planets TIARA Winter School on Exoplanets 2008

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Science with Transiting Planets TIARA Winter School on Exoplanets 2008"

Transcription

1 Science with Transiting Planets TIARA Winter School on Exoplanets 2008 Eric Agol University of Thanks to Josh Winn for slides 1

2 Venusian transit 2004 August 6, 2004 from Slovenia (Lajovic et al.) 2

3 History of Exoplanetary Transits Rosenblatt (1971) proposed that planets around other stars could be found by monitoring the colors of the star Borucki & Summers (1984) expanded on this idea, eventually proposal a space telescope With the discovery of planets via radial velocity (RV), starting with 51 Pegasi (Mayor & Queloz 1995), the question remained: were these really planets? Could they be other stellar phenomena? Could they be face-on brown dwarfs? Solution: planetary transits... 3

4 First Transiting planet: HD b First discovered with radial velocity; photometric follow-up revealed a dip right when expected (upper right): confirmed RV planets are real! HST data (right) gave exquisite precision: r planet /r star =0.1201± Charbonneau et al. (2000), Henry et al. (2000), Brown et al. (2001), Mandel & Agol (2002) 4

5 What can be learned from transits? Confirmed planets Orbital period Planetary mass Planetary radius Alignment between orbit, stellar spin Effective temperature Hints about atmospheric composition Crude IR spectrum Crude surface map Optical albedo Star spots Moons, additional planets (via timing) Planetary rings Planetary oblateness and spin rate Stellar differential rotation 5

6 Relative flux Time 6

7 Mid-infrared transit 8 micron transit of HD observed with Spitzer: no limb darkening! ΔF = R p R * 2 = Knutson et al R p R * = ±

8 Relative flux Time 8

9 Relative flux t F t T Time 9

10 ρ * = 24 π 2 PΔF 3 / 4 G(t T 2 t F 2 ) 3 / 2 Seager & Mallen- Ornelas 2003 Relative flux ΔF = (R p /R s ) 2 P t F t T Time 10

11 Derive: ρ * = 3 π 2 P Gt M 3 Kepler s laws + geometry: v 3 = 2πGM v P 2R * Relative flux t M Time 11

12 g p = 8 KP 4π π t 2 2 ΔF ( T t ) F P 2 2 ( ) ( t 2 2 T t ) F ΔF 2ΔF 1/ 2 Winn et al. (2007); Southworth et al. (2007); Beatty et al. (2007); Sozzetti et al. (2007) Relative flux ΔF = (R p /R s ) 2 P t F t T Time 12

13 Other physical quantities Transiting planets are like single-lined eclipsing binaries: extra information is needed to completely solve for the mass/radius of planet & star: 1. Assume mass-radius relation for the star, or 2. Measure stellar properties from spectrum From this can be derived the planet density (composition, core), inclination, semi-major axis 13

14 Discovering transiting planets Two challenges: 1) transit duty cycle is R * /πa 2) probability of transiting is R * /a The semi-major axis distribution of jupiter-mass RV planets predicts that 0.1% of stars should have transiting planets with transit depth >1% To discover one transiting planet, naively monitor ~10 3 stars for 2P ~ 6 days. In reality one transiting planet requires monitoring ~10 5 stars: giants, false positives (e.g. grazing binaries, Brown 2003), correlated noise (Pont et al. 2006), interruptions, & metallicity bias reduce efficiency (Gaudi 2006) stellar radius semimajor axis 14

15 1/21/2008 Eric Agol University of 15

16 1/21/2008 Eric Agol University of 16

17 Udalski et al. (the OGLE collaboration) 17

18 Udalski et al. (the OGLE collaboration) 18

19 Winn, Holman, & Fuentes (2007) 19

20 Effects of correlated noise Ground-based surveys have errors due to atmospheric fluctuations that can last ~hours at the few mmag level These can create false transit-shaped features in the lightcurve, so detection threshold has to be set higher, reducing # detected planets typical range from ground Pont et al

21 Planetary transit surveys Five transiting planets have first been detected with RV: Doppler shifts are present all the time at any inclination (N2K survey Fischer et al. 2004) Transiting planet discoveries are now dominated by photometric surveys. Successful surveys have thus monitored lots of stars at high precision: OGLE (Konacki et al. 2003), TrES (Alonso et al. 2004), XO (McCollough et al. 2006), WASP (Collier-Cameron et al. 2006), HAT (Bakos et al. 2007) Transit surveys are highly biased towards shortperiod, large planets (Gaudi et al. 2006) 21

22 Transit Discoveries 29 as of Jan 2008 (2 more submitted)

23 Mass-Period Correlation Mass inversely correlates with semi-major axis, except 2 eccentric long-period planets (Mazeh et al. 2005, Torres et al. 2008) - may relate to metallicity 23

24 Two classes? Hansen & Barman (2007) proposed Class I & II planets Θ = 1 2 V esc V orb 2 = a R p M p M * R T eq =T * eff 2a 1/ 2 Torres et al. (2008) 24

25 ρ=0.5 Saturn ρ=1 ρ=1.5 g/cc Jupiter Neptune Earth 25

26 The dense planet HD Sato et al G. Laughlin 26

27 ρ=0.5 Saturn ρ=1 ρ=1.5 g/cc Jupiter Neptune Earth 27

28 Bloated planets Early migration (Burrows et al. 2000) Insolation-driven, deeply penetrating gravity waves (Showman & Guillot 2002) Eccentricity tides (Bodenheimer et al. 2001, 2003) Obliquity tides (Winn & Holman 2005) Enhanced atmospheric opacity (Burrows et al. 2007) Inhibition of convection of planetary interior (Chabrier & Baraffe 2007) 28

29 Rossiter- McLaughlin effect Gaudi & Winn (2007) 29

30 β Lyrae: Rossiter 1924, ApJ, 60, 15 Algol: McLaughlin 1924, ApJ, 60, 22 R. A. Rossiter ( ) 30

31 Measuring spin-orbit alignment Ohta, Taruya, & Suto 2005; Gaudi & Winn

32 32

33 Phase variation of HD Observed planet for ~1/2 orbit (33 hours, 0.25M exposures) at 8 µm using Spitzer/IRAC Small size of observed phase variation indicates relatively efficient circulation between day/night sides Secondary eclipse indicates low (~30%) albedo Transit Secondary Eclipse Phase Function Knutson et al. (2007) 33

34 Mapping a Hot Jupiter Inversion: Divide the planet into longitudinal slices At each point in time, about half of the slices are visible As the planet rotates, each slice on terminus rotates into or out of view Regularized linear inversion allows us to determine face-on brightness of each slice 34

35 Mapping a Hot Jupiter Hot spot is ~30±10 degrees away from substellar point (~25 mbar level) - agrees with Fortney et al. (2006) prediction! Hot spot and cold spot occur in same hemisphere T b,max = 1200 K, T b,min = 973 K Bond albedo 0.3 P n 0.3 Cowan & Agol, in prep 35

36 Steam on an extrasolar planet Transit of HD b measured with Spitzer stronger absorption by water weaker absorption by water Beaulieu et al. (2007), Knutson et al (2007), Tinetti et al. (2007) 36

37 Known transiting planet Transit times are equally spaced. 37

38 Perturbed by second planet Unknown perturbing planet Known transiting planet Transit times are NOT equally spaced. 38

39 Time Transit Timing Variations (TTV) Transit Times _ Time Best-Fit Orbit Eclipse Number Timing Residuals Eclipse Number = Time Eclipse Number 39

40 Resonant libration 40

41 Resonant libration 41

42 Limits on second planets in HD HST observations of HD O - C (d) Transit Time (d) Agol & Steffen (2007) 42

43 Combined TTV and RV for HD Maximum allowed mass for companion in initially circular orbit TTV Analysis TTV Theory (1) TTV + RV (2) RV Theory (3) (1) Eqns. (A7-8) & (33) from Agol, Steffen, Sari, & Clarkson MNRAS 359, 567 (2005) (2) RV measurements from Laughlin et al. ApJ 629, L121 (2005) (3) Eqn. (2) from Steffen & Agol MNRAS 364, L96 (2005) 43

44 Future Prospects ESA Corot satellite: still waiting for publications NASA Kepler satellite: launch 2009; monitor 10 5 stars; should detect dozens of transiting planets EPOXI: 30 cm mirror on Deep Impact satellite will be used for optical imaging of a handful of transiting planet systems (PI Deming) TRACER: 60 cm infrared ( µm) for detailed studies of bright transiting systems (NASA SMEX, PI Clampin) Monitor 10 3 M dwarfs from ground: habitable zone is much closer & can detect smaller planets arxiv:

45 Possible thesis topics: Which (if any) is the correct explanation for bloated planets? dense planets? Do second, short-period planets exist? are they stable? Do planets have moons or rings? Can we detect transiting super-earths/earths? Can we detect reflected light from planets? What explains the mass/period correlation of transiting planets? What causes Safronov/T eq correlation? 45

46 Selected references: Jean Schneider s website - up-to-date & easy to query Greg Laughlin s exoplanet blog Charbonneau et al. When Extrasolar Planets Transit Their Parent Stars astro-ph/ Torres, Winn & Holman, 2008, arxiv: uniform reanalysis of most transiting planets & catalog of the derived properties 46

47 Exercises: 1. Derive the relation: (M p << M *, chord across star is straight, circular orbit, no limb-darkening) 2. Derive the relation: ρ * = 24 π 2 PΔF 3 / 4 G(t T 2 t F 2 ) 3 / 2 g p = 8 KP 2 4π π ( t T t ) F ΔF P 2 ΔF t T ( ) ( 2 2 t ) F 1 2 ΔF 1/ 2 47

Extrasolar Transiting Planets: Detection and False Positive Rejection

Extrasolar Transiting Planets: Detection and False Positive Rejection 4 Harvard-Smithsonian Center for Astrophysics Extrasolar Transiting Planets: Detection and False Positive Rejection Willie Torres Harvard-Smithsonian Center for Astrophysics Young Planetary Systems Workshop

More information

What is to expect from the transit method. M. Deleuil, Laboratoire d Astrophysique de Marseille Institut Universitaire de France

What is to expect from the transit method. M. Deleuil, Laboratoire d Astrophysique de Marseille Institut Universitaire de France What is to expect from the transit method M. Deleuil, Laboratoire d Astrophysique de Marseille Institut Universitaire de France Transit - method Occurrence: only if the planet orbital plane is close to

More information

HD Transits HST/STIS First Transiting Exo-Planet. Exoplanet Discovery Methods. Paper Due Tue, Feb 23. (4) Transits. Transits.

HD Transits HST/STIS First Transiting Exo-Planet. Exoplanet Discovery Methods. Paper Due Tue, Feb 23. (4) Transits. Transits. Paper Due Tue, Feb 23 Exoplanet Discovery Methods (1) Direct imaging (2) Astrometry position (3) Radial velocity velocity Seager & Mallen-Ornelas 2003 ApJ 585, 1038. "A Unique Solution of Planet and Star

More information

Exoplanetary Atmospheres: Temperature Structure of Irradiated Planets. PHY 688, Lecture 23 Mar 20, 2009

Exoplanetary Atmospheres: Temperature Structure of Irradiated Planets. PHY 688, Lecture 23 Mar 20, 2009 Exoplanetary Atmospheres: Temperature Structure of Irradiated Planets PHY 688, Lecture 23 Mar 20, 2009 Outline Review of previous lecture hot Jupiters; transiting planets primary eclipses and atmospheric

More information

The Rossiter- McLaughlin Effect

The Rossiter- McLaughlin Effect The Rossiter- McLaughlin Effect B. Scott Gaudi The Ohio State University (special thanks to Josh Winn) Relative flux Time Relative flux Time Relative flux Time Relative flux Time Relative flux Time Relative

More information

The Rossiter effect of transiting extra-solar planets Yasushi Suto Department of Physics, University of Tokyo

The Rossiter effect of transiting extra-solar planets Yasushi Suto Department of Physics, University of Tokyo The Rossiter effect of transiting extra-solar planets λ λ = 4 o.4 ± 1 o.4 Yasushi Suto Department of Physics, University of Tokyo International Workshop on on the 10th Gravitational Microlensing and Related

More information

The Transit Method: Results from the Ground

The Transit Method: Results from the Ground The Transit Method: Results from the Ground Results from individual transit search programs The Mass-Radius relationships (internal structure) Global Properties The Rossiter-McClaughlin Effect There are

More information

Transiting Extrasolar Planets

Transiting Extrasolar Planets Transiting Extrasolar Planets Recent Progress, XO Survey, and the Future Christopher J. Burke Solar System Has Predominately Circular Orbits Top View Side View Planet Formation NASA/JPL-Caltech/R. Hurt

More information

Adam Burrows, Princeton April 7, KITP Public Lecture

Adam Burrows, Princeton April 7, KITP Public Lecture Adam Burrows, Princeton April 7, 2010 KITP Public Lecture The Ancient History of Comparative Planetology There are infinite worlds both like and unlike this world of ours...we must believe that in all

More information

Observations of Extrasolar Planets During the non-cryogenic Spitzer Space Telescope Mission

Observations of Extrasolar Planets During the non-cryogenic Spitzer Space Telescope Mission Observations of Extrasolar Planets During the non-cryogenic Spitzer Space Telescope Mission Drake Deming, Eric Agol, David Charbonneau, Nicolas Cowan, Heather Knutson and Massimo Marengo NASA s Goddard

More information

Observations of extrasolar planets

Observations of extrasolar planets Observations of extrasolar planets 1 Mercury 2 Venus radar image from Magellan (vertical scale exaggerated 10 X) 3 Mars 4 Jupiter 5 Saturn 6 Saturn 7 Uranus and Neptune 8 we need to look out about 10 parsecs

More information

Unveiling the nature of transiting extrasolar planets with the Rossiter effect

Unveiling the nature of transiting extrasolar planets with the Rossiter effect Unveiling the nature of transiting extrasolar planets with the Rossiter effect λ Yasushi Suto Department of Physics, the University of Tokyo MPA cosmology seminar July 3, 2007 Recent Activities of Observational

More information

Michaël Gillon (Université de Liège, Belgium)

Michaël Gillon (Université de Liège, Belgium) 12th Meeting of the FNRS Contact Group Astronomie & Astrophysique 17 May 2011 Planetarium, Brussels Michaël Gillon (Université de Liège, Belgium) michael.gillon@ulg.ac.be ~1% pour Soleil + Jupiter Brown

More information

The formation of giant planets: Constraints from interior models

The formation of giant planets: Constraints from interior models The formation of giant planets: Constraints from interior models Tristan Guillot Observatoire de la Côte d Azur www.obs-nice.fr/guillot (Guillot, Ann. Rev. Earth & Plan. Sci. 2005 & Saas-Fee course 2001,

More information

Extrasolar Planets: Ushering in the Era of Comparative Exoplanetology

Extrasolar Planets: Ushering in the Era of Comparative Exoplanetology Extrasolar Planets: Ushering in the Era of Comparative Exoplanetology A. Sozzetti INAF Osservatorio Astrofisico di Torino Detection/Characterization Detection (Visible): - Doppler spectroscopy (95%) -

More information

arxiv: v1 [astro-ph.ep] 30 Jun 2009

arxiv: v1 [astro-ph.ep] 30 Jun 2009 Transiting Planets Proceedings IAU Symposium No. 253, 2008 TBD c 2008 International Astronomical Union DOI: 00.0000/X000000000000000X Ground-Based Photometric Searches for Transiting Planets Tsevi Mazeh

More information

Exoplanetary Atmospheres: Atmospheric Dynamics of Irradiated Planets. PHY 688, Lecture 24 Mar 23, 2009

Exoplanetary Atmospheres: Atmospheric Dynamics of Irradiated Planets. PHY 688, Lecture 24 Mar 23, 2009 Exoplanetary Atmospheres: Atmospheric Dynamics of Irradiated Planets PHY 688, Lecture 24 Mar 23, 2009 Outline Review of previous lecture: atmospheric temperature structure of irradiated planets isothermal

More information

Finding Extra-Solar Earths with Kepler. William Cochran McDonald Observatory

Finding Extra-Solar Earths with Kepler. William Cochran McDonald Observatory Finding Extra-Solar Earths with Kepler William Cochran McDonald Observatory Who is Bill Cochran? Senior Research Scien;st McDonald Observatory Originally interested in outer planet atmospheres Started

More information

GJ 436. Michaël Gillon (Geneva)

GJ 436. Michaël Gillon (Geneva) Michaël Gillon (Geneva) Michelson Summer Workshop - July 25, 2007 2004: first hot Neptunes detected by radial velocity Among them: b (Butler et al. 2004, Maness et al. 2007) M * ~ 0.44 M Sun (M2.5V) R

More information

Search for Transiting Planets around Nearby M Dwarfs. Norio Narita (NAOJ)

Search for Transiting Planets around Nearby M Dwarfs. Norio Narita (NAOJ) Search for Transiting Planets around Nearby M Dwarfs Norio Narita (NAOJ) Outline Introduction of Current Status of Exoplanet Studies Motivation for Transiting Planets around Nearby M Dwarfs Roadmap and

More information

Detecting Terrestrial Planets in Transiting Planetary Systems

Detecting Terrestrial Planets in Transiting Planetary Systems Detecting Terrestrial Planets in Transiting Planetary Systems Jason H. Steffen Brinson Postdoctoral Fellow, Fermilab Northwestern University May 3, 2007 Fermilab Planetary Science Team Jason H. Steffen

More information

WP the Mass-Radius relationship for gas giants

WP the Mass-Radius relationship for gas giants WP 115 100 the Mass-Radius relationship for gas giants Tristan Guillot, Mathieu Havel Observatoire de la Côte d'azur, CNRS UMR 6202 Objectives: Understand the expected impact of PLATO photometry on the

More information

arxiv: v2 [astro-ph] 18 Dec 2008

arxiv: v2 [astro-ph] 18 Dec 2008 Planet influence on the shape of the hosting star - ellipsoidal variations of tau Bootis W. Dimitrov Astronomical Observatory of Adam Mickiewicz University ul. S loneczna 36, 60-286 Poznań, Poland dimitrov@amu.edu.pl

More information

Exoplanet Forum: Transit Chapter

Exoplanet Forum: Transit Chapter Exoplanet Forum: Transit Chapter A condensed version of the Transits Chapter from the Exoplanet Forum Proceedings, made available to the Decadal Survey, Planetary Systems and Star Formation Panel Drake

More information

International Symposium on Planetary Science (IAPS2013)

International Symposium on Planetary Science (IAPS2013) International Symposium on Planetary Science (IAPS2013) Venue: 3 rd floor of Astronomical Building Shanghai Astronomical Observatory, Chinese Academy of Sciences The follow-up observations of several exoplanet

More information

Exoplanet Search Techniques: Overview. PHY 688, Lecture 28 April 3, 2009

Exoplanet Search Techniques: Overview. PHY 688, Lecture 28 April 3, 2009 Exoplanet Search Techniques: Overview PHY 688, Lecture 28 April 3, 2009 Course administration final presentations Outline see me for paper recommendations 2 3 weeks before talk see me with draft of presentation

More information

Comparative Planetology: Transiting Exoplanet Science with JWST

Comparative Planetology: Transiting Exoplanet Science with JWST Comparative Planetology: Transiting Exoplanet Science with JWST Mark Clampin, JWST Science Working Group, JWST Transits Working Group, Drake Deming, and Don Lindler MarkClampin JWSTObservatoryProjectScientist

More information

EART164: PLANETARY ATMOSPHERES

EART164: PLANETARY ATMOSPHERES EART164: PLANETARY ATMOSPHERES Francis Nimmo Last Week - Dynamics Reynolds number, turbulent vs. laminar flow Velocity fluctuations, Kolmogorov cascade Brunt-Vaisala frequency, gravity waves Rossby waves,

More information

High-Accuracy Measurements of Variations in Transit Timing: A New Method for Detecting Terrestrial-Class Extrasolar Planets

High-Accuracy Measurements of Variations in Transit Timing: A New Method for Detecting Terrestrial-Class Extrasolar Planets High-Accuracy Measurements of Variations in Transit Timing: A New Method for Detecting Terrestrial-Class Extrasolar Planets A science white paper submitted to Astro2010 Decadal Survey (Planetary Systems

More information

Science Olympiad Astronomy C Division Event National Exam

Science Olympiad Astronomy C Division Event National Exam Science Olympiad Astronomy C Division Event National Exam University of Nebraska-Lincoln May 15-16, 2015 Team Number: Team Name: Instructions: 1) Please turn in all materials at the end of the event. 2)

More information

Extrasolar Planets. Methods of detection Characterization Theoretical ideas Future prospects

Extrasolar Planets. Methods of detection Characterization Theoretical ideas Future prospects Extrasolar Planets Methods of detection Characterization Theoretical ideas Future prospects Methods of detection Methods of detection Methods of detection Pulsar timing Planetary motion around pulsar

More information

PRECISE RADIUS ESTIMATES FOR THE EXOPLANETS WASP-1b AND WASP-2b

PRECISE RADIUS ESTIMATES FOR THE EXOPLANETS WASP-1b AND WASP-2b The Astrophysical Journal, 658:1322Y1327, 2007 April 1 # 2007. The American Astronomical Society. All rights reserved. Printed in U.S.A. A PRECISE RADIUS ESTIMATES FOR THE EXOPLANETS WASP-1b AND WASP-2b

More information

A TRANSITING EXTRASOLAR GIANT PLANET AROUND THE STAR OGLE-TR-10

A TRANSITING EXTRASOLAR GIANT PLANET AROUND THE STAR OGLE-TR-10 The Astrophysical Journal, 624:372 377, 2005 May 1 # 2005. The American Astronomical Society. All rights reserved. Printed in U.S.A. A A TRANSITING EXTRASOLAR GIANT PLANET AROUND THE STAR OGLE-TR-10 Maciej

More information

TrES Exoplanets and False Positives: Finding the Needle in the Haystack

TrES Exoplanets and False Positives: Finding the Needle in the Haystack Transiting Extrasolar Planets Workshop ASP Conference Series, Vol. 366, 2007 C. Afonso, D. Weldrake and Th. Henning TrES Exoplanets and False Positives: Finding the Needle in the Haystack F. T. O Donovan

More information

Searching for transiting giant extrasolar planets. Department of Physics University of Tokyo Yasushi Suto

Searching for transiting giant extrasolar planets. Department of Physics University of Tokyo Yasushi Suto Searching for transiting giant extrasolar planets Department of Physics University of Tokyo Yasushi Suto Cosmology in the 20 th th century Rapid progress of cosmology since 1980 s existence of dark matter

More information

Searching for the atmospheric signature of transiting extrasolar planets. Department of Physics, University of Tokyo Yasushi Suto

Searching for the atmospheric signature of transiting extrasolar planets. Department of Physics, University of Tokyo Yasushi Suto Searching for the atmospheric signature of transiting extrasolar planets Department of Physics, University of Tokyo Yasushi Suto Search for extrasolar planets the goal: Are we alone? origin of the earth

More information

Transit Timing Variations

Transit Timing Variations Transit Timing Variations Dan Fabrycky UCSC / UChicago Thanks to Michelson (/NExScI) and Hubble for support! Planet Detection Method ETVs! TTVs! Overview The dynamics that give rise to TTV Sensitivity

More information

OGLE-TR-56. Guillermo Torres, Maciej Konacki, Dimitar D. Sasselov and Saurabh Jha INTRODUCTION

OGLE-TR-56. Guillermo Torres, Maciej Konacki, Dimitar D. Sasselov and Saurabh Jha INTRODUCTION OGLE-TR-56 Guillermo Torres, Maciej Konacki, Dimitar D. Sasselov and Saurabh Jha Harvard-Smithsonian Center for Astrophysics Caltech, Department of Geological and Planetary Sciences University of California

More information

Kepler s Multiple Planet Systems

Kepler s Multiple Planet Systems Kepler s Multiple Planet Systems TITech & Kobe Univ. February 2018 Jack J. Lissauer NASA Ames Outline Solar System & Exoplanets Kepler Mission Kepler planets and planetery systems Principal Kepler findings

More information

3.4 Transiting planets

3.4 Transiting planets 64 CHAPTER 3. TRANSITS OF PLANETS: MEAN DENSITIES 3.4 Transiting planets A transits of a planet in front of its parent star occurs if the line of sight is very close to the orbital plane. The transit probability

More information

arxiv: v1 [astro-ph] 31 Oct 2008

arxiv: v1 [astro-ph] 31 Oct 2008 Mon. Not. R. Astron. Soc. 000, 000 000 (0000) Printed 27 November 2008 (MN LATEX style file v2.2) Transit infrared spectroscopy of the hot neptune around GJ 436 with the Hubble Space Telescope arxiv:0810.5731v1

More information

arxiv: v1 [astro-ph.ep] 20 Jan 2009

arxiv: v1 [astro-ph.ep] 20 Jan 2009 Astronomy & Astrophysics manuscript no. Fressin Guillot Nesta AA c ESO 2009 January 20, 2009 Interpreting the yield of transit surveys: Are there groups in the known transiting planets population? Francois

More information

When Extrasolar Planets Transit Their Parent Stars

When Extrasolar Planets Transit Their Parent Stars When Extrasolar Planets Transit Their Parent Stars David Charbonneau Harvard-Smithsonian Center for Astrophysics Timothy M. Brown High Altitude Observatory Adam Burrows University of Arizona Greg Laughlin

More information

hd b greg laughlin jonathan langton ucsc

hd b greg laughlin jonathan langton ucsc hd 80606 b greg laughlin jonathan langton ucsc The success of the planet detection programs has enabled the comparative study of populations of planets, as well as the detailed investigation of individual

More information

Actuality of Exoplanets Search. François Bouchy OHP - IAP

Actuality of Exoplanets Search. François Bouchy OHP - IAP Actuality of Exoplanets Search François Bouchy OHP - IAP How detect extrasolar planets? Two main difficulties : 1 A tiny angular separation 0.75 arcsec Sun Jupiter at 4 light years 4 Sun Jupiter at 100

More information

Spectroscopic search for atmospheric signature of transiting extrasolar planets

Spectroscopic search for atmospheric signature of transiting extrasolar planets Spectroscopic search for atmospheric signature of transiting extrasolar planets http://hubblesite.org /newscenter/archive/ 2001/38/ Department of Physics, University of Tokyo Yasushi Suto Post-Nishinomiya-Yukawa

More information

arxiv: v1 [astro-ph.ep] 25 May 2009

arxiv: v1 [astro-ph.ep] 25 May 2009 Astronomy & Astrophysics manuscript no. aa c ESO 2018 October 6, 2018 Letter to the Editor Detection of orbital parameter changes in the TrES-2 exoplanet? D. Mislis and J.H.M.M. Schmitt arxiv:0905.4030v1

More information

Observations of Extrasolar Planets

Observations of Extrasolar Planets Observations of Extrasolar Planets Hamilton 2005 Shay Zucker Observations of Extrasolar Planets Spectroscopic detection of exoplanets Emerging properties of the sample Transiting planets Future prospects

More information

When Extrasolar Planets Transit Their Parent Stars

When Extrasolar Planets Transit Their Parent Stars Charbonneau et al.: When Extrasolar Planets Transit Their Parent Stars 701 When Extrasolar Planets Transit Their Parent Stars David Charbonneau Harvard-Smithsonian Center for Astrophysics Timothy M. Brown

More information

4. Direct imaging of extrasolar planets. 4.1 Expected properties of extrasolar planets. Sizes of gas giants, brown dwarfs & low-mass stars

4. Direct imaging of extrasolar planets. 4.1 Expected properties of extrasolar planets. Sizes of gas giants, brown dwarfs & low-mass stars 4. Direct imaging of extrasolar planets Reminder: Direct imaging is challenging: The proximity to its host star: 1 AU at 1 for alpha Cen 0.15 for the 10th most nearby solar-type star The low ratio of planet

More information

Exoplanetary Transit Constraints Based upon Secondary Eclipse Observations

Exoplanetary Transit Constraints Based upon Secondary Eclipse Observations PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 121:1096 1103, 2009 October 2009. The Astronomical Society of the Pacific. All rights reserved. Printed in U.S.A. Exoplanetary Transit Constraints

More information

arxiv: v1 [astro-ph.ep] 10 Mar 2009

arxiv: v1 [astro-ph.ep] 10 Mar 2009 Astronomy & Astrophysics manuscript no. ms c ESO 2009 May 9, 2009 An analysis of the transit times of CoRoT-Exo-1b J. L. Bean 1 arxiv:0903.1845v1 [astro-ph.ep] 10 Mar 2009 Institut für Astrophysik, Georg-August-Universität

More information

SPICA Science for Transiting Planetary Systems

SPICA Science for Transiting Planetary Systems SPICA Science for Transiting Planetary Systems Norio Narita Takuya Yamashita National Astronomical Observatory of Japan 2009/06/02 SPICA Science Workshop @ UT 1 Outline For Terrestrial/Jovian Planets 1.

More information

II. Results from Transiting Planets. 1. Global Properties 2. The Rossiter-McClaughlin Effect

II. Results from Transiting Planets. 1. Global Properties 2. The Rossiter-McClaughlin Effect II. Results from Transiting Planets 1. Global Properties 2. The Rossiter-McClaughlin Effect Planet Radius Most transiting planets tend to be inflated. Approximately 68% of all transiting planets have radii

More information

Lecture 20: Planet formation II. Clues from Exoplanets

Lecture 20: Planet formation II. Clues from Exoplanets Lecture 20: Planet formation II. Clues from Exoplanets 1 Outline Definition of a planet Properties of exoplanets Formation models for exoplanets gravitational instability model core accretion scenario

More information

A search for transiting extrasolar planet candidates in the OGLE-II microlens database of the galactic plane

A search for transiting extrasolar planet candidates in the OGLE-II microlens database of the galactic plane October 4, 2007 A search for transiting extrasolar planet candidates in the OGLE-II microlens database of the galactic plane Snellen I.A.G. 1, van der Burg R.F.J. 1, de Hoon M.D.J. 1, Vuijsje F.N. 1 Leiden

More information

Research paper assignment

Research paper assignment Research paper assignment Review of research that interests you, more focused than discussions in class Include references and figures Final format should be PDF (try LaTeX!) Concise! < 5000 words Steps:

More information

Finding terrestrial planets in the habitable zones of nearby stars

Finding terrestrial planets in the habitable zones of nearby stars Finding terrestrial planets in the habitable zones of nearby stars Part II Astrophysics Essay Simon Hodgkin & Mark Wyatt (on sabbatical) Terrestrial? 15 Exoplanets Solar system 5 4.5 g cm 3 Winn et al.

More information

Gravitational microlensing. Exoplanets Microlensing and Transit methods

Gravitational microlensing. Exoplanets Microlensing and Transit methods Gravitational microlensing Exoplanets Microlensing and s Planets and Astrobiology (2016-2017) G. Vladilo May take place when a star-planet system crosses the visual of a background star, as a result of

More information

DETECTING TRANSITING PLANETS WITH COROT. Stefania Carpano ESAC (25th of November 2009)

DETECTING TRANSITING PLANETS WITH COROT. Stefania Carpano ESAC (25th of November 2009) DETECTING TRANSITING PLANETS WITH COROT Stefania Carpano ESAC (25th of November 2009) Outline 1) Introduction: Exoplanet science and detection methods Detection of exoplanets using the transit method The

More information

Atmospheric Dynamics of Exoplanets: Status and Opportunities

Atmospheric Dynamics of Exoplanets: Status and Opportunities Atmospheric Dynamics of Exoplanets: Status and Opportunities Adam Showman University of Arizona Collaborators: Jonathan Fortney, Lorenzo Polvani, Yuan Lian, Mark Marley, Nikole Lewis, Daniel Perez-Becker,

More information

Transit infrared spectroscopy of the hot Neptune around GJ 436 with the Hubble Space Telescope

Transit infrared spectroscopy of the hot Neptune around GJ 436 with the Hubble Space Telescope Mon. Not. R. Astron. Soc. 393, L6 L10 (2009) doi:10.1111/j.1745-3933.2008.00582.x Transit infrared spectroscopy of the hot Neptune around GJ 436 with the Hubble Space Telescope F. Pont, 1 R. L. Gilliland,

More information

Lecture 12: Extrasolar planets. Astronomy 111 Monday October 9, 2017

Lecture 12: Extrasolar planets. Astronomy 111 Monday October 9, 2017 Lecture 12: Extrasolar planets Astronomy 111 Monday October 9, 2017 Reminders Star party Thursday night! Homework #6 due Monday The search for extrasolar planets The nature of life on earth and the quest

More information

HST Transmission Spectral Survey: observations, analysis and results

HST Transmission Spectral Survey: observations, analysis and results Image credit: David A. Aguilar (CfA) Image credit: ESA HST Transmission Spectral Survey: observations, analysis and results Nikolay Nikolov and the HST Team Collaborators: Image credits: NASA, ESA, and

More information

Exo-Cartography (Mapping the Climate and Oceans of Exoplanets)

Exo-Cartography (Mapping the Climate and Oceans of Exoplanets) Exo-Cartography (Mapping the Climate and Oceans of Exoplanets) Nick Cowan CIERA Postdoctoral Fellow Northwestern University May 17, 2011 What I Won t Talk About Pallé et al. (2009) May 17, 2011 Nick Cowan's

More information

Observational Techniques: Ground-based Transits

Observational Techniques: Ground-based Transits Observational Techniques: Ground-based Transits Mercedes López-Morales Carnegie Institution of Washington 2009 Sagan Exoplanet Summer Workshop: Exoplanetary Atmospheres Work funded by: Why ground-based

More information

Extrasolar planets and their hosts: Why exoplanet science needs X-ray observations

Extrasolar planets and their hosts: Why exoplanet science needs X-ray observations Extrasolar planets and their hosts: Why exoplanet science needs X-ray observations Dr. Katja Poppenhaeger Sagan Fellow Harvard-Smithsonian Center for Astrophysics Exoplanets Exoplanets in 2005 (from the

More information

The obliquities of the planetary systems detected with CHEOPS. Guillaume Hébrard Institut d astrophysique de Paris Observatoire de Haute-Provence

The obliquities of the planetary systems detected with CHEOPS. Guillaume Hébrard Institut d astrophysique de Paris Observatoire de Haute-Provence The obliquities of the planetary systems detected with CHEOPS Guillaume Hébrard Institut d astrophysique de Paris Observatoire de Haute-Provence CHEOPS Characterizing Exoplanets Satellite Science Workshop

More information

PLANETARY SYSTEM: FROM GALILEO TO EXOPLANETS

PLANETARY SYSTEM: FROM GALILEO TO EXOPLANETS PLANETARY SYSTEM: FROM GALILEO TO EXOPLANETS Rosa M. Ros Technical University of Catalonia, Barcelona (Spain) Abstract When in 1610 Galileo Galilei looked at Jupiter with the use of his telescope, he saw

More information

Probing the Galactic Planetary Census

Probing the Galactic Planetary Census Probing the Galactic Planetary Census Greg Laughlin -- UCSC Astronomy Exoplanet News from the AAS meeting (New York Times) The finding was called exciting by Dr. Kenneth Franklin of the American Museum-Hayden

More information

Exoplanets and their Atmospheres. Josh Destree ATOC /22/2010

Exoplanets and their Atmospheres. Josh Destree ATOC /22/2010 Exoplanets and their Atmospheres Josh Destree ATOC 3500 4/22/2010 Outline What is an exoplanet? Why do we care? Detecting exoplanets Exoplanets compared to planets in the solar system Exoplanet atmospheres

More information

Pan-Planets with PANSTARRS1. And : CfA, John Hopkins Uni., UK Consortium, Centr. Uni. Taiwan

Pan-Planets with PANSTARRS1. And : CfA, John Hopkins Uni., UK Consortium, Centr. Uni. Taiwan Pan-Planets with PANSTARRS1 And : CfA, John Hopkins Uni., UK Consortium, Centr. Uni. Taiwan Panoramic Survey Telescope and Rapid Response System The renaissance of wide-field imaging Wide-field imaging

More information

THE TRANSIT LIGHT CURVE (TLC) PROJECT. VI. THREE TRANSITS OF THE EXOPLANET TrES-2

THE TRANSIT LIGHT CURVE (TLC) PROJECT. VI. THREE TRANSITS OF THE EXOPLANET TrES-2 The Astrophysical Journal, 664:1185Y1189, 2007 August 1 # 2007. The American Astronomical Society. All rights reserved. Printed in U.S.A. A THE TRANSIT LIGHT CURVE (TLC) PROJECT. VI. THREE TRANSITS OF

More information

Long-term transit timing monitoring and homogenous study of WASP-32

Long-term transit timing monitoring and homogenous study of WASP-32 RAA 2015 Vol. 15 No. 1, 117 126 doi: 10.1088/1674 4527/15/1/011 http://www.raa-journal.org http://www.iop.org/journals/raa Research in Astronomy and Astrophysics Long-term transit timing monitoring and

More information

Long-term transit timing monitoring and homogenous study of WASP-32

Long-term transit timing monitoring and homogenous study of WASP-32 RAA 2015 Vol. 15 No. 1, 117 126 doi: 10.1088/1674 4527/15/1/011 http://www.raa-journal.org http://www.iop.org/journals/raa Research in Astronomy and Astrophysics Long-term transit timing monitoring and

More information

Architecture and demographics of planetary systems

Architecture and demographics of planetary systems Architecture and demographics of planetary systems Struve (1952) The demography of the planets that we detect is strongly affected by detection methods psychology of the observer Understanding planet demography

More information

arxiv: v1 [astro-ph.ep] 13 Jan 2009

arxiv: v1 [astro-ph.ep] 13 Jan 2009 Astronomy & Astrophysics manuscript no. 1239 c ESO 2013 June 9, 2013 Letter to the Editor Ground-based K-band detection of thermal emission from the exoplanet TrES-3b E.J.W. de Mooij 1 and I.A.G. Snellen

More information

THEORETICAL SPECTRA AND LIGHT CURVES OF CLOSE-IN EXTRASOLAR GIANT PLANETS AND COMPARISON WITH DATA

THEORETICAL SPECTRA AND LIGHT CURVES OF CLOSE-IN EXTRASOLAR GIANT PLANETS AND COMPARISON WITH DATA The Astrophysical Journal, 678:1436Y1457, 2008 May 10 # 2008. The American Astronomical Society. All rights reserved. Printed in U.S.A. A THEORETICAL SPECTRA AND LIGHT CURVES OF CLOSE-IN EXTRASOLAR GIANT

More information

II Planet Finding.

II Planet Finding. II Planet Finding http://sgoodwin.staff.shef.ac.uk/phy229.html 1.0 Introduction There are a lot of slides in this lecture. Much of this should be familiar from PHY104 (Introduction to Astrophysics) and

More information

III The properties of extrasolar planets

III The properties of extrasolar planets III The properties of extrasolar planets (as of early 2016) http://sgoodwin.staff.shef.ac.uk/phy229.html 3.0 Introduction This lecture will discuss what we have found so far. It is important to remember

More information

Extrasolar planets. Lecture 23, 4/22/14

Extrasolar planets. Lecture 23, 4/22/14 Extrasolar planets Lecture 23, 4/22/14 Extrasolar planets Extrasolar planets: planets around other stars Also called exoplanets 1783 exoplanets discovered as of 4/21/14 Orbitting 1105 different stars Number

More information

The Use of Transit Timing to Detect Extrasolar Planets with Masses as Small as Earth

The Use of Transit Timing to Detect Extrasolar Planets with Masses as Small as Earth arxiv:astro-ph/41228v1 1 Dec 24 The Use of Transit Timing to Detect Extrasolar Planets with Masses as Small as Earth Matthew J. Holman, 1 Norman W. Murray 2,3 1 Harvard-Smithsonian Center for Astrophysics,

More information

arxiv: v2 [astro-ph.ep] 13 Jun 2011

arxiv: v2 [astro-ph.ep] 13 Jun 2011 The Heavy Element Masses of Extrasolar Giant Planets, Revealed Neil Miller and Jonathan J. Fortney 1 Department of Astronomy and Astrophysics, University of California, Santa Cruz arxiv:1105.0024v2 [astro-ph.ep]

More information

Alternative Pre- Observation Catalogue for Photometric Follow- Up of Transiting Exoplanets

Alternative Pre- Observation Catalogue for Photometric Follow- Up of Transiting Exoplanets Alternative Pre- Observation Catalogue for Photometric Follow- Up of Transiting Exoplanets Terreka S Hart Tennessee State University Advisor: Dr John A Johnson University of Hawai i - Institute for Astronomy

More information

Data from: The Extrasolar Planet Encyclopaedia.

Data from: The Extrasolar Planet Encyclopaedia. Data from: The Extrasolar Planet Encyclopaedia http://exoplanet.eu/ 2009->10 Status of Exoplanet Searches Direct Detection: 5->9 planets detected Sensitive to large planets in large orbits around faint

More information

arxiv: v1 [astro-ph.ep] 23 Nov 2011

arxiv: v1 [astro-ph.ep] 23 Nov 2011 Transit model of planets with moon and ring systems Luis Ricardo Moretto Tusnski arxiv:1111.5599v1 [astro-ph.ep] 23 Nov 2011 Astrophysics Division, Instituto Nacional de Pesquisas Espaciais Av. dos Astronautas,

More information

Searching for Other Worlds

Searching for Other Worlds Searching for Other Worlds Lecture 32 1 In-Class Question What is the Greenhouse effect? a) Optical light from the Sun is reflected into space while infrared light passes through the atmosphere and heats

More information

Transit Spectroscopy Jacob Bean

Transit Spectroscopy Jacob Bean Transit Spectroscopy Jacob Bean University of Chicago Some recent reviews: Exoplanetary Atmospheres Chemistry, Forma6on Condi6ons, and Habitability Madhusudhan+ 2016 Observa6ons of Exoplanet Atmospheres

More information

Why Search for Extrasolar Planets?

Why Search for Extrasolar Planets? Why Search for Extrasolar Planets? What is the diversity of habitats for life in the universe? Are Earth-like planets common or rare in our region of the galaxy? We have an elaborate and self-consistent

More information

PROSPECTS FOR THE CHARACTERIZATION AND CONFIRMATION OF TRANSITING EXOPLANETS VIA THE ROSSITER-MCLAUGHLIN EFFECT

PROSPECTS FOR THE CHARACTERIZATION AND CONFIRMATION OF TRANSITING EXOPLANETS VIA THE ROSSITER-MCLAUGHLIN EFFECT The Astrophysical Journal, 655:550Y563, 2007 January 20 # 2007. The American Astronomical Society. All rights reserved. Printed in U.S.A. A PROSPECTS FOR THE CHARACTERIZATION AND CONFIRMATION OF TRANSITING

More information

Validation of Transiting Planet Candidates with BLENDER

Validation of Transiting Planet Candidates with BLENDER Validation of Transiting Planet Candidates with BLENDER Willie Torres Harvard-Smithsonian Center for Astrophysics Planet Validation Workshop, Marseille, 14 May 2013 2013 May 14 Planet Validation Workshop,

More information

Planets in other Star Systems

Planets in other Star Systems Planets in other Star Systems test out how planets are formed with more examples first extrasolar planet observed in 1995. In Jan 2000, 28 observed and now >3700 confirmed (3/2018). Many systems with 2

More information

ASTB01 Exoplanets Lab

ASTB01 Exoplanets Lab ASTB01 Exoplanets Lab Author: Anders Johansen Revision date: $Date: 2015/08/28 14:55:59 $ Planets orbiting stars other than the Sun are called exoplanets. Stellar light reflected off

More information

EXONEST The Exoplanetary Explorer. Kevin H. Knuth and Ben Placek Department of Physics University at Albany (SUNY) Albany NY

EXONEST The Exoplanetary Explorer. Kevin H. Knuth and Ben Placek Department of Physics University at Albany (SUNY) Albany NY EXONEST The Exoplanetary Explorer Kevin H. Knuth and Ben Placek Department of Physics University at Albany (SUNY) Albany NY Kepler Mission The Kepler mission, launched in 2009, aims to explore the structure

More information

A dozen years of hot exoplanet atmospheric investigations. Results from a large HST program. David K. Sing. #acrosshr Cambridge.

A dozen years of hot exoplanet atmospheric investigations. Results from a large HST program. David K. Sing. #acrosshr Cambridge. A dozen years of hot exoplanet atmospheric investigations Results from a large HST program David K. Sing #acrosshr Cambridge ] 1 Aug 2014 Outline Introduction to Transit Spectroscopy Highlight 3 Science

More information

Correlations between planetary transit timing variations, transit duration variations and brightness fluctuations due to exomoons

Correlations between planetary transit timing variations, transit duration variations and brightness fluctuations due to exomoons arxiv:1704.00202v1 [astro-ph.im] 1 Apr 2017 Correlations between planetary transit timing variations, transit duration variations and brightness fluctuations due to exomoons April 4, 2017 K.E.Naydenkin

More information

Internal structure and atmospheres of planets

Internal structure and atmospheres of planets Internal structure and atmospheres of planets SERGEI POPOV 1312.3323 Sizes and masses Radius vs. mass Results of modeling. Old (relaxed) planets. Colors correspond to different fractions of light elements.

More information

Observations of transits of the southern exoplanets WASP 4b and WASP 46b by using a 40 cm telescope

Observations of transits of the southern exoplanets WASP 4b and WASP 46b by using a 40 cm telescope Observations of transits of the southern exoplanets WASP 4b and WASP 46b by using a 40 cm telescope Diana Kjurkchieva 1, Nikola Petrov 2, Velimir Popov 3, Emil Ivanov 3 1 Department of Physics, University

More information

Transits: planet detection and false signals. Raphaëlle D. Haywood Sagan Fellow, Harvard College Observatory

Transits: planet detection and false signals. Raphaëlle D. Haywood Sagan Fellow, Harvard College Observatory Transits: planet detection and false signals Raphaëlle D. Haywood Sagan Fellow, Harvard College Observatory Outline Transit method basics Transit discoveries so far From transit detection to planet confirmation

More information