Jenkins stratakeynote

20
A Profusion of Exoplanets: Key Science Results from the Kepler Mission Jon M. Jenkins SETI Institute/NASA Ames Research Center Thursday September 22, 2011 STScI SAO

description

Jenkins Strata Keynote PPT

Transcript of Jenkins stratakeynote

Page 1: Jenkins stratakeynote

A Profusion of Exoplanets:Key Science

Results from the Kepler Mission

Jon M. JenkinsSETI Institute/NASA Ames Research Center

Thursday September 22, 2011

STScISAO

Page 2: Jenkins stratakeynote

... the ways by which men arrive at knowledge of the celestial things are hardly less wonderful than the nature of these things themselves.

— Johannes Kepler 1571-1630

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

Page 3: Jenkins stratakeynote

The Kepler Mission

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

Page 4: Jenkins stratakeynote

How Hard is it to Find Good Planets?

Jupiter:

Jupiter1% area of the Sun (1/100)

Earth or Venus0.01% area of the Sun (1/10,000)

Page 5: Jenkins stratakeynote

Kepler Field Of View

Credit: Carter Roberts

Page 6: Jenkins stratakeynote

Launched March 7 2009

First Light Image

Page 7: Jenkins stratakeynote

The Kepler Spacecraft and Instrument

Page 8: Jenkins stratakeynote

Pre-Kepler Transiting Planets as of June 2009

Jupiter

Neptune

Earth

Page 9: Jenkins stratakeynote

Kepler Candidates as of June 2010

Jupiter

Neptune

Earth

Page 10: Jenkins stratakeynote

Kepler Candidates as of February 1, 2011

Jupiter

Neptune

Earth

Page 11: Jenkins stratakeynote

Jupiter

Earth

Neptune

Kepler Candidates as of February 1, 2011

Page 12: Jenkins stratakeynote

Kepler-11: Simply Supercalifragilisticexpialidocious

Page 13: Jenkins stratakeynote

Kepler: Big Data, Big Challenges

Big Processing Challenges Instrument effects are large compared to signal of interest Observational noise is non-white and non-stationary ~17×106 independent tests per star for planetary signatures [O(N2)]

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

Page 14: Jenkins stratakeynote

Instrumental Signatures

Bayesian approaches look promising!

Page 15: Jenkins stratakeynote

The Search Problem

Page 16: Jenkins stratakeynote

Solar Variability

Page 17: Jenkins stratakeynote

Single Transit Statistics

Page 18: Jenkins stratakeynote

Folded Transit Statistics

Page 19: Jenkins stratakeynote

Conclusions

Kepler has found well over 1000 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

Page 20: Jenkins stratakeynote

Kepler-16b