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Exoplanets

Tom Barclay
January 14, 2017

 Exoplanets

A talk I gave to a group of Indian school kids about NASA exoplanet experiments. This public talk level.

Tom Barclay

January 14, 2017
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  1. Tom Barclay NASA Ames Research Center January 11, 2017 Exoplanet

    Discovery
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  5. Detecting Planets

  6. The amount of dimming tells us the size of the

    exoplanet. The time it takes to complete an orbit tells us how far away it is from the star.
  7. NASA’s Kepler Mission: What fraction of stars in our galaxy

    harbor potentially habitable, earth-size planets?
  8. Size Energy

  9. * *

  10. * * March 6, 2009

  11. Exoplanet Detections, 1995-2009 Radius Relative to Earth Orbital Period in

    days Earth Jupiter
  12. Coughlin et al. 2015 Exoplanet Detections, 1995-2015 Radius Relative to

    Earth Orbital Period in days
  13. A. Kepler has told us that planets are everywhere. B.

    Finding small planets on long orbital periods is hard D. We can combine observations, theory and modern statistics.
  14. 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.5-0.7

    0.7 - 1 1 – 1.4 1.4 - 2 2 – 2.8 2.8 - 4 4 – 5.7 5.7 - 8 8 - 11 11 - 16 16 - 23 Planet Size (Earth=1) Fraction Observed Sizes not seen in our Solar System 55 165 381 520 567 268 94 54 53 39 17
  15. 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 Sizes

    not seen in our Solar System 1 – 1.4 1.4 - 2 2 – 2.8 2.8 - 4 4 – 5.7 5.7 - 8 8 - 11 11 - 16 16 - 23 Planet Size (Earth=1) Average Number of Planets per Star
  16. Confirmed Habitable Zone Planets New validations from Morton et al.

    2016 ApJ 822 86
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  18. Spitzer Kepler JWST1 TESS Missions WFIRST-AFTA NASA Missions 1 NASA

    / ESA Partnership Hubble1 Habitable Exoplanet Imager L-UV-OIR Large Binocular Telescope Interferometer NN-EXPLORE W. M. Keck Observatory New Worlds Telescope
  19. Kepler Search Space: 3000 light-years 0.25% of the sky TESS

    Search Space: 200 light-years All-sky
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  22. The Dark Side of the Moon Pink Floyd/Capitol Records Light

    from Star
  23. Voyager’s picture of Earth, the Pale Blue Dot Spectrum of

    the reflected light reveals a living world.
  24. Earth’s Spectral Fingerprints are Unique Credit: Sky & Telescope 10/2015;

    reproduced from Robinson & Meadows Vegetation
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  28. Spitzer Kepler JWST1 TESS Missions WFIRST-AFTA NASA Missions 1 NASA

    / ESA Partnership Hubble1 Habitable Exoplanet Imager L-UV-OIR Large Binocular Telescope Interferometer NN-EXPLORE W. M. Keck Observatory New Worlds Telescope
  29. Large Space Telescope Required

  30. Coronagraph Technology

  31. Star ShadeTechnology

  32. “Is there life on other worlds? For the first time

    in human history, we have finally been able to embark on the systematic, scientific pursuit of an answer.” NASA 30-Year Roadmap for Astrophysics
  33. Where will exploration take us in 100 years? 33 Exoplanet

    Travel Bureau
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