logging in or signing up 4Exo Stella Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 45 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: January 24, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript We are not alone: Other planets, other earths?: Edmund Bertschinger MIT Department of Physics and Kavli Institute for Astrophysics and Space Research We are not alone: Other planets, other earths?Earth and Mars – or Mars and Earth?: Earth and Mars – or Mars and Earth? Mars is drier than the Atacama (or Sahara) desert.Life on Mars?: Life on Mars? R. Villard, STScIMartian Meteorite found in Antarctica: Martian Meteorite found in Antarctica McKay et al. 1996: carbonate globules – evidence for microbial life? Lunar and Planetary InstituteSlide7: Methane rivers and oceans on Titan (Huygens lander, European Space Agency)Family Portrait: 4 rocky planets, 2 gas giants, 2 ice giants: Family Portrait: 4 rocky planets, 2 gas giants, 2 ice giantsSlide10: Planets around other stars: exoplanets After 10 years of study, 170 known (California-Carnegie Planet Search, G. Marcy)How to find other planetary systems: How to find other planetary systems Doppler measurement of stellar wobble: planets’ gravity pulls on starSlide12: Figure from California-Carnegie Planet Search First success: 1995, Mayor and QuelozHow to find other planetary systems: How to find other planetary systems Transit: planet passes in front of star, dims the light a tiny amountSlide14: Both the Doppler and Transit methods can much more easily find close-in, Jupiter mass planets than earth-like planetsHow to find other planetary systems: How to find other planetary systems Infrared emission from dusty disksHow to find other planetary systems: How to find other planetary systems Direct imagingHow to find other planetary systems: How to find other planetary systems Gravitational MicrolensingSlide20: The gravity of a planet orbiting a star causes light rays to bend, changing the amount of light reaching the earth. Background star Enhanced image at earth 25 January 2006: the star OGLE-2005-BLG-390L has a planet of mass about 5 earth masses, in a 10-year orbit!Family Comparison: Family ComparisonFamily Comparison: Family Comparison R. Villard, STScIWhat have we learned?: What have we learned? At least a few percent of sunlike stars have massive planetsWhat have we learned?: What have we learned? Surprise: “Hot Jupiters” on wildly eccentric orbits (California-Carnegie Planet Search) What have we learned?: What have we learned? Stars with more heavy elements are more likely to host planets (California-Carnegie Planet Search) What have we learned?: What have we learned? Some planets likely have right conditions for liquid water (it’s 300K in here!)Habitable zone for life: Habitable zone for life Darren Williams, Penn State ErieHabitable zone for life: Habitable zone for life Darren Williams, Penn State ErieFuture: search for earthlike planets and life: Future: search for earthlike planets and life Kepler: 2008 launch scheduled Search method: transits European Corot mission may scoop US. Terrestrial Planet Finder: 2015 or later Atmospheric SpectroscopyAdditional Credits and Information: Additional Credits and Information Credits: Water on Mars: antwrp.gsfc.nasa.gov/apod/ - Astronomy Picture of the Day Sahara Desert and Mars: Lunar and Planetary Institute “Hubble detects a transiting planet” and Beta Pictoris images: Space Telescope Science Institute Black hole embedding diagram: Scott Hughes, MIT Figures showing Mean Orbital Distance created online at http://extrasolar.net/charts.asp Kepler and TPF: NASA/Jet Propulsion Laboratory Books: Origins: Fourteen Billion Years of Cosmic Evolution, Neil deGrasse Tyson and Donald Goldsmith Earth: An Intimate History, Richard Fortey The Ancestor’s Tale: A Pilgrimage to the Dawn of Evolution, Richard Dawkins Websites for more information: Websites for more information Extrasolar.net – General information about exoplanets Exoplanets.org – California-Carnegie exoplanet searches www.astrobio.net - Astrobiology Solstation.com – General astronomy information, sky maps antwrp.gsfc.nasa.gov/apod/ - Astronomy Picture of the Day You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
4Exo Stella Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 45 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: January 24, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript We are not alone: Other planets, other earths?: Edmund Bertschinger MIT Department of Physics and Kavli Institute for Astrophysics and Space Research We are not alone: Other planets, other earths?Earth and Mars – or Mars and Earth?: Earth and Mars – or Mars and Earth? Mars is drier than the Atacama (or Sahara) desert.Life on Mars?: Life on Mars? R. Villard, STScIMartian Meteorite found in Antarctica: Martian Meteorite found in Antarctica McKay et al. 1996: carbonate globules – evidence for microbial life? Lunar and Planetary InstituteSlide7: Methane rivers and oceans on Titan (Huygens lander, European Space Agency)Family Portrait: 4 rocky planets, 2 gas giants, 2 ice giants: Family Portrait: 4 rocky planets, 2 gas giants, 2 ice giantsSlide10: Planets around other stars: exoplanets After 10 years of study, 170 known (California-Carnegie Planet Search, G. Marcy)How to find other planetary systems: How to find other planetary systems Doppler measurement of stellar wobble: planets’ gravity pulls on starSlide12: Figure from California-Carnegie Planet Search First success: 1995, Mayor and QuelozHow to find other planetary systems: How to find other planetary systems Transit: planet passes in front of star, dims the light a tiny amountSlide14: Both the Doppler and Transit methods can much more easily find close-in, Jupiter mass planets than earth-like planetsHow to find other planetary systems: How to find other planetary systems Infrared emission from dusty disksHow to find other planetary systems: How to find other planetary systems Direct imagingHow to find other planetary systems: How to find other planetary systems Gravitational MicrolensingSlide20: The gravity of a planet orbiting a star causes light rays to bend, changing the amount of light reaching the earth. Background star Enhanced image at earth 25 January 2006: the star OGLE-2005-BLG-390L has a planet of mass about 5 earth masses, in a 10-year orbit!Family Comparison: Family ComparisonFamily Comparison: Family Comparison R. Villard, STScIWhat have we learned?: What have we learned? At least a few percent of sunlike stars have massive planetsWhat have we learned?: What have we learned? Surprise: “Hot Jupiters” on wildly eccentric orbits (California-Carnegie Planet Search) What have we learned?: What have we learned? Stars with more heavy elements are more likely to host planets (California-Carnegie Planet Search) What have we learned?: What have we learned? Some planets likely have right conditions for liquid water (it’s 300K in here!)Habitable zone for life: Habitable zone for life Darren Williams, Penn State ErieHabitable zone for life: Habitable zone for life Darren Williams, Penn State ErieFuture: search for earthlike planets and life: Future: search for earthlike planets and life Kepler: 2008 launch scheduled Search method: transits European Corot mission may scoop US. Terrestrial Planet Finder: 2015 or later Atmospheric SpectroscopyAdditional Credits and Information: Additional Credits and Information Credits: Water on Mars: antwrp.gsfc.nasa.gov/apod/ - Astronomy Picture of the Day Sahara Desert and Mars: Lunar and Planetary Institute “Hubble detects a transiting planet” and Beta Pictoris images: Space Telescope Science Institute Black hole embedding diagram: Scott Hughes, MIT Figures showing Mean Orbital Distance created online at http://extrasolar.net/charts.asp Kepler and TPF: NASA/Jet Propulsion Laboratory Books: Origins: Fourteen Billion Years of Cosmic Evolution, Neil deGrasse Tyson and Donald Goldsmith Earth: An Intimate History, Richard Fortey The Ancestor’s Tale: A Pilgrimage to the Dawn of Evolution, Richard Dawkins Websites for more information: Websites for more information Extrasolar.net – General information about exoplanets Exoplanets.org – California-Carnegie exoplanet searches www.astrobio.net - Astrobiology Solstation.com – General astronomy information, sky maps antwrp.gsfc.nasa.gov/apod/ - Astronomy Picture of the Day