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A New Method to Validate Planets a nd the Discovery of Kepler-10c

A New Method to Validate Planets a nd the Discovery of Kepler-10c. Francois Fressin Harvard -Smithsonian Center for Astrophysics ffressin@cfa.harvard.edu. Kepler’s First Rocky Planet: Kepler-10b. Another signal in the data.

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A New Method to Validate Planets a nd the Discovery of Kepler-10c

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  1. A New Method to Validate Planets and the Discovery of Kepler-10c Francois Fressin Harvard-Smithsonian Center for Astrophysics ffressin@cfa.harvard.edu

  2. Kepler’s First Rocky Planet: Kepler-10b

  3. Another signal in the data • There was a longer period signal, that could not be confirmedas a planet by the Doppler method. • New technique to validatethe discovery

  4. Kepler-10c • Period = 45.29 days • There was a longer period signal, that could not be confirmedas a planet by the Doppler method. • New technique to validatethe discovery

  5. Planet or Blend? Transiting Planet Eclipsing Binary Stars Blenderis a light-curve fitting software • It attempts to explain Kepler candidates assuming they are the result of two background eclipsing stars. An observed periodic transit signal could be due to:

  6. Pleiades NASA’s fastest supercomputer

  7. Validating Transiting Planets Blender results show that only a very small fraction can actually reproduce the exact transit shape A large range of Eclipsing Binary Stars could mimic the transit.

  8. Warm Spitzer Observations In visible light InInfrared If the system is a planet, transit depth is independent of the color of light observed

  9. Validation of Kepler-10c • Period = 45.3 days • 2.23 Earth Radii • < 20 Earth Masses This technique will be used to validate planets that cannot otherwise be confirmed, like rocky planets in the habitable zone. There is only 1 in 60,000 chance it’s not a planet

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