Other migration processes. New transiting hot Jupiters from last week. First success from CoRoT. Kozai mechanism
|
|
- Tyrone Mosley
- 5 years ago
- Views:
Transcription
1 Other migration processes Previous lecture: Migration through planet-disk interactions Type I: low-mass planet (does not clear a gap in disk) Type II: high-mass panet (has cleared gap) Type III: runaway migration New transiting hot Jupiters from last week First success from CoRoT Kozai mechanism Tidal migration Mass = 1.3 Mjup Radius = 1.65 Rjup, Period = 1.5 days New transiting hot Jupiters from last week Hot Jupiter with highly eccentric orbit! HATP-2b P=5.6 days, e=0.5 Kozai mechanism Interaction with a remote binary star 1. Eccentricity oscillations in planet orbit 2. At high e and short periastron tidal dissipation can circularize the orbit, drawing the planet inwards For the orbit of a planet, relative to the binary: Is conserved 1
2 Tidal migration Interaction of Earth/moon 1. Earth s spin slows down (2 ms/century) 2. Moon s distance increases (3.8 cm/yr) Tidal migration Interaction of Hot Jupiter with star: Star spins slower than HJ orbits 1. Star s spin increases 2. Hot Jupiter s distance decreases Time scales seem to be too long to play an important role Long term stability of planetary orbits Stability of orbits is investigated using numerical simulations. This is not straightforward: A long-standing question is whether the solar system is stable in the long run? Some general statements: The Hill stability criterion: Planets should approach each Other no closer than the Hill radius (=Roche radius) The Hill radius Some general statements about stability 1. Stability of orbits depends primarily on the separation of the semi-major axes 2. Orbital resonances can either increase stability or lead to instabilities 3. Large eccentricities tend to destabilize systems, because bodies can approach each other more closely 4. Large inclination differences increase stability Juric & Tremaine 2007: numerical simulations of exoplanet Mean separation orbits Number of planets 2
3 Lecture 8: Future of exoplanet research Biomarkers for extrasolar planets Search for Extraterrestrial Intelligence Biomarkers for extrasolar planets When we have found the first Earth-like extrasolar planet in the habitable zone (have we already?), how could we investigate whether it contains life? 1. SETI (see last bit of this lecture) 2. If life on planet changes the atmospheric constituencies in a detectable way (like it does on Earth) If life does not dominate the planet, we will not be able to study it. Habitability of Earth is governed by many factors Shoemaker-Levy 9 impact on Jupiter 1. The 10-15% of stars that have a gas giant, almost all have eccentric orbits. Lower mass planets also eccentric, making huge temperature variations. This makes highly developed life unlikely 2. The presence of Jupiter is likely to play an important role in the habitability of Earth, catching off a large fraction of the comets and meteores. 3. Our moon stabilizes the Earth orbit (think of the varying climates of Mars) Atmospheric history of the Earth Atmospheric history of the Earth 3
4 Infrared spectrum as biomarker Infrared spectra On present Earth: 1. it is difficult to envisage oxygen as a major constituency in a planet s atmosphere without biological processes. 2. Oxygen and Methane are in extreme chemical disequilibrium 3. CH 4 is quickly oxidized by O 2 if it was not constantly produced by animals. O 2 has a weak infrared signature, but O 3 has strong absorption. Optical reflectance spectrum as biomarker On Earth, green vegetation produces a sharp rise in the spectrum at nm, caused by chlorophyll called the red edge Alien biospheres may not have similar photosynthesis processes With biomarkers we seem to be doomed to search for life like that on Earth Galileo flyby 1992: Carl Sagan et al., 1993, Nature Future space missions such as DARWIN and Terrestrial Planet Finder are aimed at studying biomarkers (see Perryman s lecture) 4
5 Search for Extraterrestrial intelligence SETI is an institute in the USA currently run solely on private funding (NASA sponsored for a while) Do not consider SETI as completely insane. If successful, it will be the biggest discovery in human history (and we will be the first to say that we knew all along...) However, chances of success are so slim, that most scientist do not want to be involved. SETI has been in action for more than 40 years. No results. But they do follow the scientific method, and should therefore be taken seriously Signals from ExtraTerrestrials (ET) Passive Signals: emission we just happen to pick up think about tv/radio signals we leak into space Active signals; distant civilization tries to get our attention! Passive signals cannot be detected for a significant sample of stars yet (but in near future?) How useful is SETI? Will it be more fruitful in the future? Phoenix project Future telescopes for SETI use SETI-funded Allen Telescope Array SKA. Spent 11,000 hours on 800 nearby stars. How many civilizations do we expect? Fermi paradox Completely unknown ( 1) Drake equation: If life is not rare, it can colonize the galaxy within a few million years. We don t see any aliens, so life is rare. The completely unknown is broken into several other unknowns Assume civilizations have a limited expiring date. 5
6 Copernican versus anthropic principle Copernican principle: the Earth occupies no special place in the universe. One could conclude from this that life should be abundant. Antropic principle: The Earth does occupy a special place in the universe, because we as intelligent civilization populate it. If Earth was not a special place, we would not be here. The Copernican principle is excellent, as long as it deals with issues that do not influence the development and evolution of intelligent civilizations. Hence, throwing in a bit of philosophy does not help... 6
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
More informationASTRONOMY 202 Spring 2007: Solar System Exploration. Instructor: Dr. David Alexander Web-site:
ASTRONOMY 202 Spring 2007: Solar System Exploration Instructor: Dr. David Alexander Web-site: www.ruf.rice.edu/~dalex/astr202_s07 Class 37: Life in the Universe [4/18/07] Announcements Habitability of
More informationAstrobiology: The Semester in Review
A Universe of Life Astrobiology: The Semester in Review Honors 228 with Dr. Harold Geller Searching for life everywhere Planets, stars, galaxies, Big Bang Conception of size and distance Stars and the
More informationThe 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
More informationPlanets & 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
More informationNSCI EXTRASOLAR PLANETS (CONTINUED) AND THE DRAKE EQUATION. Dr. Karen Kolehmainen Department of Physics, CSUSB
NSCI 314 LIFE IN THE COSMOS 14 - EXTRASOLAR PLANETS (CONTINUED) AND THE DRAKE EQUATION Dr. Karen Kolehmainen Department of Physics, CSUSB http://physics.csusb.edu/~karen/ METHODS FOR DETECTING EXTRASOLAR
More information2010 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
More informationPlanets 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
More informationWhat makes a planet habitable?
What makes a planet habitable? By NASA.gov on 01.26.17 Word Count 977 TOP: This artist's concept depicts Kepler-186f, the first proven Earth-sized planet to orbit a distant star in the habitable zone,
More informationLecture 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 informationAstronomy December, 2016 Introduction to Astronomy: The Solar System. Final exam. Practice questions for Unit V. Name (written legibly):
Astronomy 101 12 December, 2016 Introduction to Astronomy: The Solar System Final exam Practice questions for Unit V Name (written legibly): Honor Pledge: On my honor, I have neither given nor received
More informationII 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 information10/16/ 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?
More informationThe Jovian Planets. Why do we expect planets like this in the outer reaches of the solar system?(lc)
The Jovian Planets Beyond Mars and the Asteroid belt are the Jovian or Gas Giant Planets that are totally different than the terrestrial planets: They are composed almost entirely of gas They do not have
More informationWhat makes a planet habitable?
What makes a planet habitable? By NASA.gov, adapted by Newsela staff on 01.26.17 Word Count 862 Level 1040L TOP: This artist's concept depicts Kepler-186f, the first proven Earth-sized planet to orbit
More informationThe Quest for Extraterrestrial Signals. Ron Maddalena National Radio Astronomy Observatory Green Bank, WV
The Quest for Extraterrestrial Signals Ron Maddalena National Radio Astronomy Observatory Green Bank, WV Associated Universities, Inc; April/2016 2 Preliminary thoughts a. How certain are you that other
More informationAST 205. Lecture 23. December 8, 2003 SETI, Interstellar Travel and the Fermi Paradox. Assignments for week of Dec 8
AST 205. Lecture 23. December 8, 2003 SETI, Interstellar Travel and the Fermi Paradox Evaluation of the Drake Equation SETI: Search for Extraterrestrial Intelligence Good news Bad news Interstellar travel
More informationThe Search for Extraterrestrial Intelligence
The Search for Extraterrestrial Intelligence Methods for searching for life! Direct searches for microbial life in the solar system! rovers, sample return missions to Mars, Europa, etc.! Indirect searches
More informationWhich of the following planets are all made up of gas? When a planets orbit around the Sun looks like an oval, it s called a(n)
When a planets orbit around the Sun looks like an oval, it s called a(n) - ellipse - circle - axis - rotation Which of the following planets are all made up of gas? - Venus, Mars, Saturn and Pluto - Jupiter,
More informationAST 205. Lecture 22. December 3, 2003 Remote Sensing of Spectroscopic and Photometric Biomarkers. Assignments for week of Dec 8
AST 205. Lecture 22. December 3, 2003 Remote Sensing of Spectroscopic and Photometric Biomarkers Your homework and mine (continental drift/plate tectonics history) The NASA Terrestrial Planet Finder (TPF)
More information18 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
More informationCredit: 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
More informationChapter 24 Life in the Universe. Earliest Life Forms. When did life arise on Earth? Fossils in Sedimentary Rock. Fossils in Sedimentary Rock
Chapter 24 Life in the Universe 24.1 Life on Earth Our goals for learning When did life arise on Earth? How did life arise on Earth? What are the necessities of life? When did life arise on Earth? Earliest
More informationChapter 24: Life in the Universe
Chapter 24 Lecture Chapter 24: Life in the Universe Life in the Universe 24.1 Life on Earth Our goals for learning: When did life arise on Earth? How did life arise on Earth? What are the necessities of
More information[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
More informationExploring Spectra. Origins: Where Are the Aliens? Overhead. The Sun s Spectrum. Continuum. Intensity Absorption Line
Origins: Where Are the Aliens? Overhead Exploring Spectra Both of the following show the visible-light absorption spectrum for our sun. Notice that the second graph reveals more information the amount
More informationExtrasolar 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 informationImportance 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
More informationAstronomy 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---
More informationDetection of Earth-like planets
Planets and life Successful detections of extrasolar giant planets suggests that planetary systems may be fairly common could we detect Earthlike planets? is it likely that such planets would have life?
More informationsee disks around new stars in Orion nebula where planets are probably being formed 3
Planet Formation contracting cloud forms stars swirling disk of material around forming star (H, He, C, O, heavier elements, molecules, dust ) form planets New born star heats up material, blows away solar
More informationExtrasolar 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
More informationAstronomy 102: Stars and Galaxies Examination 3 April 11, 2003
Name: Seat Number: Astronomy 102: Stars and Galaxies Examination 3 April 11, 2003 Do not open the test until instructed to begin. Instructions: Write your answers in the space provided. If you need additional
More informationExoplanet Detection and Characterization with Mid-Infrared Interferometry
Exoplanet Detection and Characterization with Mid-Infrared Interferometry Rachel Akeson NASA Exoplanet Science Institute With thanks to Peter Lawson for providing material Sagan Workshop July 21, 2009
More information12/5/ Life on Earth. Chapter 19: Life in the Universe. When did life arise on Earth? Earliest Life Forms. Important Stuff (Section 001)
Important Stuff (Section 001) The Final Exam is Thursday, December 22, 8:00 10:00 am The Final Exam will be given in: Willey 175 Don t come to Anderson 210. No one will be there. No one. Bring 2 pencils
More informationDoppler 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:
More informationExtrasolar 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 informationChapter 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
More informationThe 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)
More informationAre We Alone? Dreams of Life Elsewhere
Are We Alone? Dreams of Life Elsewhere Where is everybody? Fermi s paradox (1950 lunch conversation) Assume 3 levels of extraterrestrial civilizations ETC1, like ours (energy resources of a planet) ETC2,
More informationLecture 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
More informationThe 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
More informationLecture 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
More informationTides and Lagrange Points
Ast111, Lecture 3a Tides and Lagrange Points Arial view of Tidal surge in Alaska (S. Sharnoff) Tides Tidal disruption Lagrange Points Tadpole Orbits and Trojans Tidal Bulges Tides Tidal Force The force
More informationLecture 13. Gravity in the Solar System
Lecture 13 Gravity in the Solar System Guiding Questions 1. How was the heliocentric model established? What are monumental steps in the history of the heliocentric model? 2. How do Kepler s three laws
More informationCopyright 2009 Pearson Education, Inc. Life in the Universe
Life in the Universe Life in the Universe The only place we know life exists is here on Earth One of humanity s Big Questions is whether it exists elsewhere We can get some clues by considering life s
More informationAstronomy A BEGINNER S GUIDE TO THE UNIVERSE EIGHTH EDITION
Astronomy A BEGINNER S GUIDE TO THE UNIVERSE EIGHTH EDITION CHAPTER 4 The Solar System Lecture Presentation 4.0 What can be seen with the naked eye? Early astronomers knew about the Sun, Moon, stars, Mercury,
More informationChapter 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
More informationAstronomy 1140 Quiz 4 Review
Astronomy 1140 Quiz 4 Review Anil Pradhan December 6, 2016 I The Outer Planets in General 1. How do the sizes, masses and densities of the outer planets compare with the inner planets? The outer planets
More informationChapter 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
More informationChapter 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
More informationPlanetary system dynamics. Planetary migration Kozai resonance Apsidal resonance and secular theories Mean motion resonances Gravitational scattering
Planetary system dynamics Planetary migration Kozai resonance Apsidal resonance and secular theories Mean motion resonances Gravitational scattering How should the planets of a typical planetary system
More information13 - 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
More informationSearching for Other Worlds: The Methods
Searching for Other Worlds: The Methods John Bally 1 1 Center for Astrophysics and Space Astronomy Department of Astrophysical and Planetary Sciences University of Colorado, Boulder The Search Extra-Solar
More informationChapter 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
More informationHabitability 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
More informationPlanets are plentiful
Extra-Solar Planets Planets are plentiful The first planet orbiting another Sun-like star was discovered in 1995. We now know of 209 (Feb 07). Including several stars with more than one planet - true planetary
More informationAstronomy 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-
More informationExoplanets: a dynamic field
Exoplanets: a dynamic field Alexander James Mustill Amy Bonsor, Melvyn B. Davies, Boris Gänsicke, Anders Johansen, Dimitri Veras, Eva Villaver The (transiting) exoplanet population Solar System Hot Jupiters:
More informationThe Search for Extraterrestrial Intelligence (SETI)
The Search for Extraterrestrial Intelligence (SETI) Our goals for learning What is the Drake equation? How many habitable planets have life? How many civilizations are out there? How does SETI work? Can
More informationn p = n e for stars like Sun f s = fraction of stars with suitable properties
Habitable Planets n e Number of planets, per planetary system that are suitable for life n e = n p x f s planetary stellar n p = n e for stars like Sun f s = fraction of stars with suitable properties
More informationPLANETARY 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 informationTransneptunian objects. Minor bodies in the outer Solar System. Transneptunian objects
Transneptunian objects Minor bodies in the outer Solar System Planets and Astrobiology (2016-2017) G. Vladilo Around 1980 it was proposed that the hypothetical disk of small bodies beyond Neptune (called
More informationPart I---Introduction: planets, and habitable planets
Part I---Introduction: planets, and habitable planets star--about 10 11 in our galaxy. Average separation is a few light years. (Compare with size of Galaxy: about 100,000 light years) planet--indirect
More informationChapter 4! Search for habitable environments, biomarkers and life outside the Earth!
Introduction to Astrobiology! Chapter 4! Search for habitable environments, biomarkers and life outside the Earth! The Solar System! Search for habitable environments and life! Venus! T s =735 K! Examples
More informationKozai-Lidov oscillations
Kozai-Lidov oscillations Kozai (1962 - asteroids); Lidov (1962 - artificial satellites) arise most simply in restricted three-body problem (two massive bodies on a Kepler orbit + a test particle) e.g.,
More informationIntroduction to Astronomy
Introduction to Astronomy Have you ever wondered what is out there in space besides Earth? As you see the stars and moon, many questions come up with the universe, possibility of living on another planet
More informationASTR 380 The Drake Equation
ASTR 380 The Drake Equation Aside: Rosetta Mission - Landing on a Comet! Aside: Rosetta Mission - Landing on a Comet! ASTR 380 The Drake Equation Drake Equation Methodology Reviewing Drake Equation factors
More informationSolar System evolution and the diversity of planetary systems
Solar System evolution and the diversity of planetary systems Alessandro Morbidelli (OCA, Nice) Work in collaboration with: R. Brasser, A. Crida, R. Gomes, H. Levison, F. Masset, D. O brien, S. Raymond,
More informationEarth 110 Exploration of the Solar System Assignment 6: Exoplanets Due in class Tuesday, March 3, 2015
Name: Section: Earth 110 Exploration of the Solar System Assignment 6: Exoplanets Due in class Tuesday, March 3, 2015 Up until the mid 1990 s, we did not know if planets existed around other stars. Advancements
More informationLife in the Universe (1)
Conditions for the emergence of life and habitability Life in the Universe (1) We call biogenic conditions the set of physico-chemical requirements that must be fulfilled for abiogenesis to take place
More informationThe Solar System - I. Alexei Gilchrist. [The Story of the Solar System]
The Solar System - I Alexei Gilchrist [The Story of the Solar System] Some resources Section 13.3 of Voyages (references and links at end) References noted in these slides The Story of the Solar System,
More informationSimon P. Balm Astro 5 Test #3 Sample Questions
Simon P. Balm Astro 5 Test #3 Sample Questions 1. What do we mean by the general habitability of a planet? A. the suitability for Life on it surface B. the suitability for Life beneath its surface C. its
More informationTerrestrial Planet (and Life) Finder. AST 309 part 2: Extraterrestrial Life
Terrestrial Planet (and Life) Finder AST 309 part 2: Extraterrestrial Life The Drake Equation: N = N * f pl n hab f L f C f T L/T Stars? Planets? Habitable Origin Complex Intelligence, Lifetime planets?
More informationASTR 380 The Drake Equation
ASTR 380 The Drake Equation 1 ASTR 380 The Drake Equation Drake Equation Methodology Reviewing Drake Equation factors that we know The star formation rate Estimating the number of Earth-like planets or
More informationOther 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
More informationSearching for Life: Chapter 20: Life on Other Worlds. Life in the Universe. Earliest Fossils. Laboratory Experiments.
Chapter 20: Life on Other Worlds Searching for Life: What does life look like here? How did Earth get life? Is Earth ordinary or extraordinary? If Earth is ordinary, where is everyone else? Life in the
More informationLife on a New Planet
Life on a New Planet Your Assignment: A national magazine is sponsoring a short story contest. Your teacher has assigned your class the task of entering this contest. The first, second, and third place
More informationDynamically Unstable Planetary Systems Emerging Out of Gas Disks
EXTREME SOLAR SYSTEMS ASP Conference Series, Vol. 398, 2008 D. Fischer, F. A. Rasio, S. E. Thorsett, and A. Wolszczan Dynamically Unstable Planetary Systems Emerging Out of Gas Disks Soko Matsumura, Edward
More informationSETI with SKA1 and SKA2
SETI with SKA1 and SKA2 Alan Penny1, Heino Falcke2, Mike Garrett3 1 University of St Andrews and South African Astronomical Observatory PI: LOFAR Early Access Program LEA070 'A SETI Pilot Program' 2 Raboud
More informationIntroduction to Astrobiology. Chapter 4 Search for habitable environments, biomarkers and life outside the Earth
Introduction to Astrobiology Chapter 4 Search for habitable environments, biomarkers and life outside the Earth Search for habitable environments and life in the Solar System Venus Examples of nonhabitable
More informationWhat is Astrobiology?
What is Astrobiology? Astrobiology is the study of life in the universe. It investigates the origin, evolution, distribution, & future of life on Earth, & the search for life beyond Earth. Astrobiology
More informationLecture Outlines. Chapter 11. Astronomy Today 8th Edition Chaisson/McMillan Pearson Education, Inc.
Lecture Outlines Chapter 11 Astronomy Today 8th Edition Chaisson/McMillan Chapter 11 Jupiter Units of Chapter 11 11.1 Orbital and Physical Properties 11.2 Jupiter s Atmosphere Discovery 11.1 A Cometary
More informationExoplanets 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 informationThe exploration of the solar system and the search for water. Thérèse Encrenaz LESIA, Observatoire de Paris
The exploration of the solar system and the search for water Thérèse Encrenaz LESIA, Observatoire de Paris The exploration of the solar system and the search for water The exploration of solar system:
More informationExtrasolar 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
More informationPlanets: 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
More informationExtrasolar Planets. Materials Light source to mimic star Ball to mimic planet Light meter Interface
Name: Date: Extrasolar Planets Objectives: Learn about Extrasolar planets planets orbiting other stars Explain how astronomers detect and characterize Extrasolar planets Materials Light source to mimic
More informationChapter 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
More information4 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
More informationUnit 12 Lesson 1 What Objects Are Part of the Solar System?
Unit 12 Lesson 1 What Objects Are Part of the Solar System? The Solar System Earth, other planets, and the moon are part of a solar system. A solar system is made up of a star and the planets and other
More informationPlanet 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
More informationWhat 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
More informationThe History of the Solar System. From cloud to Sun, planets, and smaller bodies
The History of the Solar System From cloud to Sun, planets, and smaller bodies The Birth of a Star Twenty years ago, we knew of only one star with planets the Sun and our understanding of the birth of
More informationIII 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 informationExam# 2 Review. Exam #2 is Wednesday November 8th at 10:40 AM in room FLG-280
Exam# 2 Review Exam #2 is Wednesday November 8th at 10:40 AM in room FLG-280 Bring Gator 1 ID card Bring pencil #2 with eraser No use of calculator or any electronic device during the exam We provide the
More informationA biological tour of the Solar System
A biological tour of the Solar System The story so far...! Cosmological: age, size and composition of the Universe.! Solar System: solar energy budget, physical composition of the planets.! Earth: the
More informationhd 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 informationFinding 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 informationLecture Outlines. Chapter 28. Astronomy Today 8th Edition Chaisson/McMillan Pearson Education, Inc.
Lecture Outlines Chapter 28 Astronomy Today 8th Edition Chaisson/McMillan Chapter 28 Life in the Universe Units of Chapter 28 28.1 Cosmic Evolution Discovery 28-1 The Virus 28.2 Life in the Solar System
More information