A New Method to Validate Planets a nd the Discovery of Kepler-10c
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A New Method to Validate Planets and the Discovery of
Kepler-10c
Francois Fressin Harvard-Smithsonian Center for Astrophysics
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Kepler’s First Rocky Planet: Kepler-10b
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Another signal in the data
• There was a longer period signal, that could not be confirmed as a planet by the Doppler method.
• New technique to validate the discovery
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Period = 45.29 days
• There was a longer period signal, that could not be confirmed as a planet by the Doppler method.
• New technique to validate the discovery
Kepler-10c
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Planet or Blend?An observed periodic transit signal could be due to:
Blender is a light-curve fitting software• It attempts to explain Kepler candidates assuming they
are the result of two background eclipsing stars.
Transiting Planet Eclipsing Binary Stars
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PleiadesNASA’s fastest supercomputer
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Validating Transiting PlanetsA large range of Eclipsing Binary Stars could mimic the transit.
Blender results show that only a very small fraction can actually reproduce the exact transit shape
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Warm Spitzer ObservationsIf the system is a planet, transit depth is independent of the
color of light observed
In visible light
In Infrared
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Validation of Kepler-10cThere is only 1 in 60,000 chance it’s not a planet
Period = 45.3 days2.23 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. 9