# Searching for planets around other stars. Searching for planets around other stars. Searching for other planetary systems this is a hard problem!

Size: px
Start display at page:

Download "Searching for planets around other stars. Searching for planets around other stars. Searching for other planetary systems this is a hard problem!"

Transcription

1 Reading: Chap. 21, Sect Final Exam: Tuesday, December 12; 4:30-6:30PM Homework 10: Due in recitation Dec. 1,4 1 Brief review of last time: Formation of Planetary Systems Observational Clues: evidence from our current Solar System evidence from other stars Collapse of interstellar cloud gravitational collapse, fragmentation spinup and disk formation The Solar Nebula (the SS 4.6 Gyr ago) composition, mass, and temperature structure Planet formation differential condensation & the frost line rocky grains inside, ices outside accretion - growth of planetessimals final sweeping out of material by turn-on of star Jupiter and the Sun the Sun has a luminosity of 4 x10 33 erg/s 2 Searching for other planetary systems this is a hard problem! Jupiter emits at most 8 x10 24 erg/s the Sun emits 500,000,000 times more light than Jupiter viewed from 10 pc, they are separated by 5 arc sec equivalent to 1 candle, 10 feet away from a stadium light bank, viewed from 80 miles away! Searching for planets around other stars p. 3 Searching for planets around other stars p. 4

2 Searching for planets around other stars There are other ways to find them... p. 5 Wobbles of stars from reflex motion: Kepler s 3rd Law 3 M star M planet d 2 P = M star + Mplanet 2 d orbital period [yrs] 6 The "See-Saw" Law Mplanet M star d = star d planet M star center-of-mass d star d planet M planet Mplanet << Mstar star moves in a small orbit measure dstar and you know Mplanet The "Radial Velocity" technique: look for orbital VELOCITY of star around CM Orbital motion: vel + 0 time + 7 Reflex Orbital Motion via reflex orbital motion: precision spectroscopy Credit: R. Pogge, OSU as of today: 666 planets in 503 systems 8 V = 2πd P so V star = 30m s 2π M 1 star d M planet M Jupiter Biggest effect if viewed EDGE ON Tilt of orbit to line-of-sight reduces observed velocity Credit: R. Pogge, OSU

3 Jupiter as an example: 9 V Sun around CM of Solar System = 13 m/s (= 30 mph) Doppler effect of 13 m/s is 1 part in 23,000,000 (! ) varies cyclically over a 12 year cycle very difficult (but not impossible) to measure need stable spectroscope over long time Earth? 9 cm/s! Improved chances for detection (V star bigger): pre The Search is On initial search for ordinary planets P orb ~ months first discovery - 51 Peg (Mayor & Queloz) 10 P orb = days M planet = 0.45 M Jupiter Huge strides 11 now over 549 confirmed extrasolar planetary systems (738 planets) found via Radial Velocities Planet Migration Jupiter-mass planets can t form so close to parent stars. Can form farther out migrate inwards by losing angular momentum to gas within disk 12 many (most) found by Geoff Marcy & Co. Most are massive planets Most have small orbits Many are multiple-planet systems

4 13 14 Are they really planets? or are the velocity variations something else? HD proof of a companion via transits Radial Velocity variable: M = 0.69 ± 0.05 M J P = ± d. and orbits along our line-of-sight so --> planet transits across the star! extrasolar planet detection via precision photometry p. 15 p. 16 Credit: R. Pogge, OSU as of today, number of systems/planets discovered by transits: total: 2076 planetary systems, 2769 planets, 458 multiples from space: 1631 planetary systems, 2280 planets, 6339 candidates

5 The first transiting extrasolar planet: HD p. 18 Discovery by Charbonneau et al Hubble Space Telescope light curve 19 Kepler MISSION CONCEPT A Search for Habitable Planets Earth Earth x 100 Launched 6 March m Schmidt telescope: FOV >100 deg 2 with an array of 42 CCD Optimized for finding habitable planets ( 0.5 to 10 M ) in the HZ ( near 1 AU ) of solar-like stars Continuously and simultaneously monitor 150,000 main-sequence stars Heliocentric orbit for continuous viewing 4 year duration

6 21 Earth-trailing Heliocentric Orbit Kepler field of view 22 Spacecraft orbit Earth Vernal equinox Winter solstice Earth orbit End Year 1 End Year 4 Sun 1 AU Summer solstice Launch: launch June 2008 Autumnal equinox End Year 1 Heliocentric Coordinates End Year 4 Sun!Earth!Spacecraft Period (days)! ! Semi-major (AU)! ! eccentricity! ! Sun-Earth Fixed Coordinates Transiting Planets after Kepler Transiting Planets pre- 23 Fressin N. Batalha NASA-Kepler

7 Kepler 11 - a 6 planet system Kepler 11 artwork 25 Kepler 11 artwork 26 Kepler a system formed 11.2 billion years ago 28 multiple planet systems

8 29 30 Kepler 16b a planet with two suns Kepler 16b a planet with two suns 31 p. 32 the future

### The Solar Nebula Theory

Reading: Chap. 21, Sect.21.1, 21.3 Final Exam: Tuesday, December 12; 4:30-6:30PM Homework 10: Due in recitation Dec. 1,4 Astro 120 Fall 2017: Lecture 25 page 1 Astro 120 Fall 2017: Lecture 25 page 2 The

### 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

### Doppler Technique Measuring a star's Doppler shift can tell us its motion toward and away from us.

Doppler Technique Measuring a star's Doppler shift can tell us its motion toward and away from us. Current techniques can measure motions as small as 1 m/s (walking speed!). Sun motion due to: Jupiter:

### 10/16/ Detecting Planets Around Other Stars. Chapter 10: Other Planetary Systems The New Science of Distant Worlds

10/16/17 Lecture Outline 10.1 Detecting Planets Around Other Stars Chapter 10: Other Planetary Systems The New Science of Distant Worlds Our goals for learning: How do we detect planets around other stars?

### Chapter 15 The Formation of Planetary Systems

Chapter 15 The Formation of Planetary Systems Units of Chapter 15 15.1 Modeling Planet Formation 15.2 Formation of the Solar System 15.3 Terrestrial and Jovian Planets 15.4 Interplanetary Debris 15.5 Solar

### Lecture Outlines. Chapter 15. Astronomy Today 7th Edition Chaisson/McMillan Pearson Education, Inc.

Lecture Outlines Chapter 15 Astronomy Today 7th Edition Chaisson/McMillan Chapter 15 The Formation of Planetary Systems Units of Chapter 15 15.1 Modeling Planet Formation 15.2 Terrestrial and Jovian Planets

### 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

### Chapter 13 Lecture. The Cosmic Perspective Seventh Edition. Other Planetary Systems: The New Science of Distant Worlds Pearson Education, Inc.

Chapter 13 Lecture The Cosmic Perspective Seventh Edition Other Planetary Systems: The New Science of Distant Worlds 13.1 Detecting Planets Around Other Stars Our goals for learning: Why is it so challenging

### 4 1 Extrasolar Planets

Extrasolar Planets 4 1 Introduction 4 2 So far: have looked at planets around our Sun Physics question: Is our Solar System normal? = Are there planets around other stars? can then compare solar system

### Lecture Outlines. Chapter 15. Astronomy Today 8th Edition Chaisson/McMillan Pearson Education, Inc.

Lecture Outlines Chapter 15 Astronomy Today 8th Edition Chaisson/McMillan Chapter 15 Exoplanets Units of Chapter 15 15.1 Modeling Planet Formation 15.2 Solar System Regularities and Irregularities 15.3

### Planets: Name Distance from Sun Satellites Year Day Mercury 0.4AU yr 60 days Venus yr 243 days* Earth 1 1 yr 1 day Mars 1.

The Solar System (Ch. 6 in text) We will skip from Ch. 6 to Ch. 15, only a survey of the solar system, the discovery of extrasolar planets (in more detail than the textbook), and the formation of planetary

### 2010 Pearson Education, Inc.

Thought Question Suppose you found a star with the same mass as the Sun moving back and forth with a period of 16 months. What could you conclude? A. It has a planet orbiting at less than 1 AU. B. It has

### 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

### Planets & Life. Planets & Life PHYS 214. Please start all class related s with 214: 214: Dept of Physics (308A)

Planets & Life Planets & Life PHYS 214 Dr Rob Thacker Dept of Physics (308A) thacker@astro.queensu.ca Please start all class related emails with 214: 214: Today s s lecture Assignment 1 marked will hand

### Astronomy 330 HW 2. Outline. Presentations. ! Kira Bonk ascension.html

Astronomy 330 This class (Lecture 11): What is f p? Eric Gobst Suharsh Sivakumar Next Class: Life in the Solar System HW 2 Kira Bonk http://www.ufodigest.com/news/0308/ ascension.html Matthew Tenpas http://morphman.hubpages.com/hub/alien-

### Chapter 13 Other Planetary Systems. Why is it so difficult to detect planets around other stars? Brightness Difference

Chapter 13 Other Planetary Systems The New Science of Distant Worlds 13.1 Detecting Extrasolar Planets Our goals for learning:! Why is it so difficult to detect planets around other stars?! How do we detect

### Astro 1010 Planetary Astronomy Sample Questions for Exam 3

Astro 1010 Planetary Astronomy Sample Questions for Exam 3 Chapter 6 1. Which of the following statements is false? a) Refraction is the bending of light when it passes from one medium to another. b) Mirrors

### 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

### Chapter 13 Lecture. The Cosmic Perspective. Seventh Edition. Other Planetary Systems: The New Science of Distant Worlds Pearson Education, Inc.

Chapter 13 Lecture The Cosmic Perspective Seventh Edition Other Planetary Systems: The New Science of Distant Worlds 13.1 Detecting Planets Around Other Stars Our goals for learning: Why is it so challenging

### Why is it hard to detect planets around other stars?

Extrasolar planets Why is it hard to detect planets around other stars? Planets are small and low in mass Planets are faint The angular separation between planets and their stars is tiny Why is it hard

### Solar System Formation

Solar System Formation Solar System Formation Question: How did our solar system and other planetary systems form? Comparative planetology has helped us understand Compare the differences and similarities

### 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

### Chapter 13 Lecture. The Cosmic Perspective Seventh Edition. Other Planetary Systems: The New Science of Distant Worlds Pearson Education, Inc.

Chapter 13 Lecture The Cosmic Perspective Seventh Edition Other Planetary Systems: The New Science of Distant Worlds 13.1 Detecting Planets Around Other Stars Our goals for learning: Why is it so challenging

### Chapter 13 Other Planetary Systems. The New Science of Distant Worlds

Chapter 13 Other Planetary Systems The New Science of Distant Worlds 13.1 Detecting Extrasolar Planets Our goals for learning Why is it so difficult to detect planets around other stars? How do we detect

### Astronomy 330 HW 2. Outline. Presentations. ! Alex Bara

Astronomy 330 This class (Lecture 10): Origin of the Moon Ilana Strauss Next Class: Our Planet Scott Huber Thomas Hymel HW 2! Alex Bara http://userpages.bright.net/~phobia/main.htm! Margaret Sharp http://hubpages.com/hub/proof-that-ufos-exist---

### Class 15 Formation of the Solar System

Class 16 Extra-solar planets The radial-velocity technique for finding extrasolar planets Other techniques for finding extrasolar planets Class 15 Formation of the Solar System What does a successful model

### Solar System Formation

Solar System Formation Solar System Formation Question: How did our solar system and other planetary systems form? Comparative planetology has helped us understand Compare the differences and similarities

### Planets and Brown Dwarfs

Extra Solar Planets Extra Solar Planets We have estimated there may be 10 20 billion stars in Milky Way with Earth like planets, hospitable for life. But what evidence do we have that such planets even

### The formation & evolution of solar systems

The formation & evolution of solar systems Content expectations Birth of the Solar System What did the material that eventually became the Sun and planets look like originally? Interstellar clouds like

### 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

### 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

### 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

### Spectroscopy, the Doppler Shift and Masses of Binary Stars

Doppler Shift At each point the emitter is at the center of a circular wavefront extending out from its present location. Spectroscopy, the Doppler Shift and Masses of Binary Stars http://apod.nasa.gov/apod/astropix.html

### Solar System Formation

Solar System Formation Solar System Formation Question: How did our solar system and other planetary systems form? Comparative planetology has helped us understand Compare the differences and similarities

### » How vast those Orbs must be, and how inconsiderable this Earth, the Theatre upon which all our mighty Designs, all our Navigations, and all our

» How vast those Orbs must be, and how inconsiderable this Earth, the Theatre upon which all our mighty Designs, all our Navigations, and all our Wars are transacted, is when compared to them. A very fit

### The Main Point(s) Lecture #36: Planets Around Other Stars. Extrasolar Planets! Reading: Chapter 13. Theory Observations

Lecture #36: Planets Around Other Stars Extrasolar Planets! Theory Observations Detection methods Results to date... Implications for "Habitable Zones" Reading: Chapter 13 Astro 102/104 1 The Main Point(s)

### ( ) a3 (Newton s version of Kepler s 3rd Law) Units: sec, m, kg

Astronomy 18, UCSC Planets and Planetary Systems Generic Mid-Term Exam (A combination of exams from the past several times this class was taught) This exam consists of two parts: Part 1: Multiple Choice

### 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

### 9. Formation of the Solar System

9. Formation of the Solar System The evolution of the world may be compared to a display of fireworks that has just ended: some few red wisps, ashes, and smoke. Standing on a cool cinder, we see the slow

### 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

### 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

### Chapter 13 Other Planetary Systems. Why is it so difficult to detect planets around other stars? Size Difference. Brightness Difference

Chapter 13 Other Planetary Systems Why is it so difficult to detect planets around other stars? Size Difference Planets are small compared to interstellar distances 10 billion to 1 scale Sun is size of

### Extrasolar Planets. Dieter Schmitt Max Planck Institute for Solar System Research Katlenburg-Lindau

Extrasolar Planets Dieter Schmitt Max Planck Institute for Solar System Research Katlenburg-Lindau Lecture Introduction to Solar System Physics Uni Göttingen, 8 June 2009 Outline Historical Overview Detection

### Lab #5. Searching for Extrasolar Planets

Lab #5 Searching for Extrasolar Planets Introduction Since the beginning of recorded history, humans have wondered whether we are alone in the Universe. Recently, Astronomers have begun to make significant

### Origin of the Solar System

Solar nebula Formation of planetismals Formation of terrestrial planets Origin of the Solar System Announcements There will be another preceptor-led study group Wednesday at 10:30AM in room 330 of Kuiper

### Other Solar Systems. Week 15 (Chapter 13): Other Planetary Systems

Week 15 (Chapter 13): Other Planetary Systems Nov. 30 Please pickup your grade sheet at front. We ll discuss at end of class. Other Solar Systems First one (51 Pegasi) discovered in 1995 Currently 268

### Extrasolar Planets. Today. Dwarf Planets. Extrasolar Planets. Next week. Review Tuesday. Exam Thursday. also, Homework 6 Due

Extrasolar Planets Today Dwarf Planets Extrasolar Planets Next week Review Tuesday Exam Thursday also, Homework 6 Due will count best 5 of 6 homeworks 2007 Pearson Education Inc., publishing as Pearson

### Planets Around Other Stars Extrasolar Planet Detection Methods. February, 2006

Planets Around Other Stars Extrasolar Planet Detection Methods February, 2006 Distribution of this File Extrasolar_planet_detection.ppt This Powerpoint presentation was put together for the purpose of

### Astronomy. physics.wm.edu/~hancock/171/ A. Dayle Hancock. Small 239. Office hours: MTWR 10-11am

Astronomy A. Dayle Hancock adhancock@wm.edu Small 239 Office hours: MTWR 10-11am Planetology II Key characteristics Chemical elements and planet size Radioactive dating Solar system formation Solar nebula

### Chapter 15: The Origin of the Solar System

Chapter 15: The Origin of the Solar System The Solar Nebula Hypothesis Basis of modern theory of planet formation: Planets form at the same time from the same cloud as the star. Planet formation sites

### 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

### Other planetary systems

Exoplanets are faint! Other planetary systems Planets are seen only by reflected light at optical wavelengths At the distance of another star the faint light of a planet is lost in the glare of the star

### What Have We Found? 1978 planets in 1488 systems as of 11/15/15 (http://exoplanet.eu/ ) 1642 planets candidates (http://exoplanets.

Exoplanets. II What Have We Found? 1978 planets in 1488 systems as of 11/15/15 (http://exoplanet.eu/ ) 1642 planets + 3787 candidates (http://exoplanets.org) Detected by radial velocity/astrometry: 621

### Why Should We Expect to Find Other Planets? Planetary system formation is a natural by-product of star formation

1 Why Should We Expect to Find Other Planets? Planetary system formation is a natural by-product of star formation 2 Why Should We Expect to Find Other Planets? Observations show young stars are surrounded

### What is it like? When did it form? How did it form. The Solar System. Fall, 2005 Astronomy 110 1

What is it like? When did it form? How did it form The Solar System Fall, 2005 Astronomy 110 1 Fall, 2005 Astronomy 110 2 The planets all orbit the sun in the same direction. The Sun spins in the same

### 13 - EXTRASOLAR PLANETS

NSCI 314 LIFE IN THE COSMOS 13 - EXTRASOLAR PLANETS Dr. Karen Kolehmainen Department of Physics, CSUSB http://physics.csusb.edu/~karen/ EXTRASOLAR PLANETS? DO PLANETS ORBIT AROUND OTHER STARS? WE WOULD

### [25] Exoplanet Characterization (11/30/17)

1 [25] Exoplanet Characterization (11/30/17) Upcoming Items APOD 12/2/16 1. Read chapters 24.1-24.3 for Tuesday 2. We will have a final exam review in the last discussion section (Friday, Dec 8) and also

### Key Ideas: The Search for New Planets. Scientific Questions. Are we alone in the Universe? Direct Imaging. Searches for Extrasolar Planets

The Search for New Planets Key Ideas: Search for planets around other stars. Successful Search Techniques: Astrometric Wobble Doppler Wobble major discovery method Planetary Transits planets we can study

### Other Planetary Systems (Chapter 13) Extrasolar Planets. Is our solar system the only collection of planets in the universe?

Other Planetary Systems (Chapter 13) Extrasolar Planets Is our solar system the only collection of planets in the universe? Based on Chapter 13 No subsequent chapters depend on the material in this lecture

### Young Solar-like Systems

Young Solar-like Systems FIG.2. Panels(a),(b),and(c)show 2.9,1.3,and 0.87 mm ALMA continuum images of other panels, as well as an inset with an enlarged view of the inner 300 mas centered on the (f) show

### Importance of the study of extrasolar planets. Exoplanets Introduction. Importance of the study of extrasolar planets

Importance of the study of extrasolar planets Exoplanets Introduction Planets and Astrobiology (2017-2018) G. Vladilo Technological and scientific spin-offs Exoplanet observations are driving huge technological

### The Problem. Until 1995, we only knew of one Solar System - our own

Extrasolar Planets Until 1995, we only knew of one Solar System - our own The Problem We had suspected for hundreds of years, and had confirmed as long ago as the 1800s that the stars were extremely distant

### Sombrero Galaxy. The Sombrero Galaxy is located on the southern edge of the rich Virgo cluster of galaxies.

Sombrero Galaxy The Sombrero Galaxy is located on the southern edge of the rich Virgo cluster of galaxies. Sombrero Galaxy This galaxy is 28 million light-years away. For comparison, it takes sunlight

### The Kepler Mission: 20% of all Stars in the Milky Way Have Earth like Planets!

The Kepler Mission: 20% of all Stars in the Milky Way Have Earth like Planets! Kepler Spacecraft Can we believe this result? What techniques and data were used to derive this important result? 1 How to

### Planet Detection. AST 105 Intro Astronomy The Solar System

Review AST 105 Intro Astronomy The Solar System MIDTERM III this THURSDAY 04/8 covering LECT. 17 through We ve talked about the Terrestrial Planets and the Jovian Planets - What about planets around other

### Lab 5: Searching for Extra-Solar Planets

Lab 5: Searching for Extra-Solar Planets Until 1996, astronomers only knew about planets orbiting our sun. Though other planetary systems were suspected to exist, none had been found. Now, thirteen years

### Habitability Outside the Solar System. A discussion of Bennett & Shostak Chapter 11 HNRS 228 Dr. H. Geller

Habitability Outside the Solar System A discussion of Bennett & Shostak Chapter 11 HNRS 228 Dr. H. Geller 1 Chapter Overview Distant Suns (11.1) Life cycle of stars and their habitability zones Extrasolar

### 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

### 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

### Detecting Extra Solar Planets

Detecting Extra Solar Planets The Extrasolar Planet Count Currently, 288 stars have been discovered to have planets. Some of these have more than one, so a total of 380 planets have been discovered as

### Searching for Extra-Solar Planets

Searching for Extra-Solar Planets Until 1996, astronomers only knew about planets orbiting our sun. Though other planetary systems were suspected to exist, none had been found. Now, thirteen years later,

### Lecture notes 18: Double stars and the detection of planets

Lecture notes 18: Double stars and the detection of planets More than half of all stars are in double star or in multiple star systems. This fact gives important clues on how stars form, but can also has

### Can We See Them?! Planet Detection! Planet is Much Fainter than Star!

Can We See Them?! Planet Detection! Estimating f p! Not easily! Best cases were reported in late 2008! Will see these later! Problem is separating planet light from star light! Star is 10 9 times brighter

### Test 1 Review Chapter 1 Our place in the universe

Test 1 Review Bring Gator 1 ID card Bring pencil #2 with eraser No use of calculator or any electronic device during the exam We provide the scantrons Formulas will be projected on the screen You can use

### LEARNING ABOUT THE OUTER PLANETS. NASA's Cassini spacecraft. Io Above Jupiter s Clouds on New Year's Day, Credit: NASA/JPL/University of Arizona

LEARNING ABOUT THE OUTER PLANETS Can see basic features through Earth-based telescopes. Hubble Space Telescope especially useful because of sharp imaging. Distances from Kepler s 3 rd law, diameters from

### Chapter 06 Let s Make a Solar System

like? Big picture. Chapter 06 Let s Make a Solar System How did it come to be this way? Where did it come from? Will I stop sounding like the Talking Heads? The solar system exhibits clear patterns of

### Credit: NASA/Kepler Mission/Dana Berry. Exoplanets

Credit: NASA/Kepler Mission/Dana Berry Exoplanets Outline What is an exoplanet? Why are they interesting? How can we find them? Exolife?? The future... Jon Thaler Exoplanets 2 What is an Exoplanet? Most

### 18 An Eclipsing Extrasolar Planet

Name: Date: 18 An Eclipsing Extrasolar Planet 18.1 Introduction One of the more recent new fields in astronomy is the search for (and discovery of) planets orbiting around stars other than our Sun, or

### Extrasolar Planets. Properties Pearson Education Inc., publishing as Pearson Addison-Wesley

Extrasolar Planets Properties 2007 Pearson Education Inc., publishing as Pearson Addison-Wesley Finding extrasolar planets is hard quick recap Planet Detection Direct: pictures or spectra of the planets

### Star. Planet. Chapter 1 Our Place in the Universe. 1.1 A Modern View of the Universe Our goals for learning: What is our place in the universe?

Chapter 1 Our Place in the Universe 1.1 A Modern View of the Universe Our goals for learning: What is our place in the universe? How did we come to be? How can we know what the universe was like in the

### How did it come to be this way? Will I stop sounding like the

Chapter 06 Let s Make a Solar System How did it come to be this way? Where did it come from? Will I stop sounding like the Talking Heads? What does the solar system look like? Big picture. The solar system

### From measuring and classifying the stars to understanding their physics

From measuring and classifying the stars to understanding their physics What we can measure directly: Surface temperature and color Spectrum Apparent magnitude or intensity Diameter of a few nearby stars

### Exam# 1 Review Gator 1 Keep the first page of the exam. Scores will be published using the exam number Chapter 0 Charting the Heavens

Exam# 1 Review Exam is Wednesday October 11 h at 10:40AM, room FLG 280 Bring Gator 1 ID card Bring pencil #2 (HB) with eraser. We provide the scantrons No use of calculator or any electronic device during

### NEUTRON STARS, GAMMA RAY BURSTS, and BLACK HOLES (chap. 22 in textbook)

NEUTRON STARS, GAMMA RAY BURSTS, and BLACK HOLES (chap. 22 in textbook) Neutron Stars For carbon detonation SN probably no remnant For core-collapse SN remnant is a neutron-degenerate core neutron star

### Astronomy 101 Lab: Hunt for Alien Worlds

Name: Astronomy 101 Lab: Hunt for Alien Worlds Be prepared to make calculations in today s lab. Laptops will also be used for part of the lab, but you aren t required to bring your own. Pre-Lab Assignment:

### EXOPLANETS. Aurélien CRIDA

EXOPLANETS Aurélien CRIDA EXOPLANETS Giordano Bruno said that the many stars are like our Sun, with planets like our Earth, inhabited as well (in de l'infinito universo e mondi (1574) ). He was burnt alive

### Attendance Quiz. Are you here today? (a) yes (b) no (c) Captain, the sensors indicate a class M planet orbiting this star. Here!

Extrasolar Planets Attendance Quiz Are you here today? Here! (a) yes (b) no (c) Captain, the sensors indicate a class M planet orbiting this star Guest Lectures Thursday, May 4 Life in the Zooniverse:

### Today. Solar System Formation. a few more bits and pieces. Homework due

Today Solar System Formation a few more bits and pieces Homework due Pluto Charon 3000 km Asteroids small irregular rocky bodies Comets icy bodies Formation of the Solar System How did these things come

### 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

### PLANETARY FORMATION THEORY EXPLORING EXOPLANETS

PLANETARY FORMATION THEORY EXPLORING EXOPLANETS This is what we call planets around OTHER stars! PLANETARY FORMATION THEORY EXPLORING EXOPLANETS This is only as of June 2012. We ve found at least double

### Astronomy Unit Notes Name:

Astronomy Unit Notes Name: (DO NOT LOSE!) To help with the planets order 1 My = M 2 V = Venus 3 Eager = E 4 M = Mars 5 Just = J 6 Served = Saturn 7 Us = Uranus 8 N = N 1 Orbit: The path (usually elliptical)

### m V Formation of the Solar System and Other Planetary Systems Questions to Ponder about Solar System

Formation of the Solar System and Other Planetary Systems Questions to Ponder about Solar System 1 1. Are all the other planets similar to Earth, or are they very different? 2. Do other planets have moons

### 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

### 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

### D. A system of assumptions and principles applicable to a wide range of phenomena that has been repeatedly verified

ASTRONOMY 1 EXAM 1 Name Identify Terms - Matching (20 @ 1 point each = 20 pts.) 1 Solar System G 7. aphelion N 14. eccentricity M 2. Planet E 8. apparent visual magnitude R 15. empirical Q 3. Star P 9.

### The evolution of a Solar-like system. Young Solar-like Systems. Searching for Extrasolar Planets: Motivation

Young Solar-like Systems The evolution of a Solar-like system FIG.2. Panels(a),(b),and(c)show2.9,1.3,and0.87mmALMAcontinuum images of HL Tau. Panel (d) shows the 1.3 mm psf for the same FOV as the other

### Formation of the Solar System and Other Planetary Systems

Formation of the Solar System and Other Planetary Systems 1 Questions to Ponder 1. Are all the other planets similar to Earth, or are they very different? 2. Do other planets have moons like Earth s Moon?

### m V Density Formation of the Solar System and Other Planetary Systems Questions to Ponder

Formation of the Solar System and Other Planetary Systems Questions to Ponder 1. Are all the other planets similar to Earth, or are they very different? 2. Do other planets have moons like Earth s Moon?