Initial False Positive Identification for Kepler Planetary Candidates

Details Initial False Positive Identification for Kepler Planetary Candidates Initial False Positive Identification for Kepler Planetary Candidates

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.5904g&link_type=abstract

American Astronomical Society, DPS meeting #42, #59.04; Bulletin of the American Astronomical Society, Vol. 42, p.1084

Astronomy and Astrophysics

Astrophysics

Scientific paper

Searches for transiting exoplanets inevitably generate false identifications of planetary transits, or false positives, due to a number of astrophysical phenomena that produce planetary-like transit signatures. In June 2010 the Kepler project released the light curves of more than 150,000 stars. The Kepler project has compiled a list of false positives found while searching those 150,000 stars for planetary transits.
Techniques used to identify Kepler's false positives include careful examination of the light curve for signs of eclipsing binary behavior, radial velocity measurements sufficient to eliminate stellar mass companions of the target star as the source of the transit signal, detailed analysis, supplemented by high resolution imaging, of pixel values and shifts in light distribution in the Kepler photometric aperture during transit and co-analysis of the light curves with high SNR spectra to detect blended stars too closely separated to be found by shifts in the light distribution. The types of false positives in this list include background eclipsing binaries blended with the target star, shallow eclipsing binaries including double-lined spectroscopic binaries and blends caused by hierarchical multiple systems with transiting components.
The list of known Kepler false positives is published at the Multimission Archive at STScI (MAST, http://archive.stsci.edu/kepler/false_positives.html) and is updated as new false positives are identified.

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