VizieR Online Data Catalog: California-Kepler Survey.VI. Kepler multis & singles (Weiss+, 2018)

In this paper (CKS VI), we use the refined stellar and planetary properties presented in CKS VII (Fulton & Petigura. 2018AJ....156..264F) to compare a large, homogeneous, high-purity sample of Kepler singles and multis. Where applicable, we also examine how the stellar and planetary properties of the multis differ for system with two, three, and four or more transiting planets. The initial CKS data set consists of 1944 signals that were at one time flagged as transiting planet candidates, orbiting 1222 stars that have Gaia properties reported in DR2 (Cat. I/345). From these, we discarded the signals that are now known to be false positives (as determined on either the NASA Exoplanet Archive or in CKS I, Petigura et al. 2017, J/AJ/154/107), removing 156 non-planetary signals around 104 stars. We then discarded stars that are diluted by at least 5% by a second star in the Kepler aperture, removing 88 planet candidates around 58 stars. We discarded planets for which Mullally et al. (2015, J/ApJS/217/31) measured b>0.9, for which the high impact parameters adversely affected our ability to determine accurate planet radii, removing 137 planet candidates from around 70 stars. We removed planet candidates for which the measured signal-to-noise ratio (S/N) is less than 10 since these planets have poorly determined radii and impact parameters, removing 48 planet candidates. We also removed planet candidates with R_p>22.4 R_{Earth}, which are likely eclipsing binaries rather than planets. Of the four planet candidates with R_p>22.4 R_{Earth}, all four were singles, and three orbited giant stars with log(g)<3.9. Systems that were originally multis but had been purified to the extent that only one planet remained were excluded. After these cuts, our sample included 892 high-purity planet candidates in multi-planet systems around 349 stars.

(2 data files).