A profusion of exoplanets key science results from the kepler mission
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SAO. A Profusion of Exoplanets: Key Science Results from the Kepler Mission. STScI. Jon M. Jenkins SETI Institute/NASA Ames Research Center Thursday September 22, 2011.

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A profusion of exoplanets key science results from the kepler mission

SAO

A Profusion of Exoplanets:Key Science Results from the Kepler Mission

STScI

  • Jon M. Jenkins

  • SETI Institute/NASA Ames Research Center

  • Thursday September 22, 2011


A profusion of exoplanets key science results from the kepler mission

Do there exist many worlds or is there but a single one? This is one of the most noble and exalted questions in the study of Nature— Saint Albertus Magnus 1206-1280

Scholar, Patron Saint of Scientists

Credit: Carter Roberts


The kepler mission

The Kepler Mission

What fraction of sun-like stars in our galaxy host potentially habitable Earth-size planets?


How hard is it to find good planets

How Hard is it to Find Good Planets?

Jupiter:

Jupiter

1% area of the Sun (1/100)

Earth or Venus

0.01% area of the Sun (1/10,000)


Kepler field of view

Kepler Field Of View

Credit: Carter Roberts


First light image

First Light Image

  • Launched March 7 2009


The kepler spacecraft and instrument

The Kepler Spacecraft and Instrument


Pre kepler transiting planets as of june 2009

Pre-Kepler Transiting Planets as of June 2009

Jupiter

Neptune

Earth


Kepler candidates as of june 2010

Kepler Candidates as of June 2010

Jupiter

Neptune

Earth


Kepler candidates as of february 1 2011

Kepler Candidates as of February 1, 2011

Jupiter

Over 408 Planets in 170 Planetary Systems!

Neptune

Earth


Kepler candidates as of february 1 20111

Kepler Candidates as of February 1, 2011

Jupiter

Neptune

Earth


Kepler 11 simply supercalifragilisticexpialidocious

Kepler-11: Simply Supercalifragilisticexpialidocious!


Kepler big data big challenges

Kepler: Big Data, Big Challenges

Big Data:

  • >150,000 target stars

  • 6x106 pixels collected and stored per ½ hour

  • ~40 GB downlinked each month

  • >40×109 points in the time series over 3.5 years

Big Processing Challenges

  • Instrument effects are large compared to signal of interest

  • Observational noise is non-white and non-stationary

  • ~100×106 tests per star for planetary signatures [O(N2)]


Instrumental signatures

Instrumental Signatures

Bayesian approaches look promising!


The search problem

The Search Problem


Solar variability

Solar Variability


Single transit statistics

Single Transit Statistics


A profusion of exoplanets key science results from the kepler mission

Folded Transit Statistics


A profusion of exoplanets key science results from the kepler mission

Conclusions

  • Kepler has found well over 1200 planetary candidates

  • Kepler has doubled the number of known planets orbiting other stars in our galaxy

  • We’re finding that small planets are more common than large planets

  • We’ve found a planet similar to Tatooine orbiting two stars

  • We find that multiple planet systems are quite common

  • Each day we are getting closer and closer to finding an Earth-Sun analog


A profusion of exoplanets key science results from the kepler mission

Kepler-16b


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