REVISED STELLAR PROPERTIES OF KEPLER TARGETS FOR THE QUARTER 1-16 TRANSIT DETECTION RUN

Abstract

We present revised properties for 196,468 stars observed by the NASA Kepler Mission and used in the analysis of Quarter 1-16 (Q1-Q16) data to detect and characterize transiting planets. The catalog is based on a compilation of literature values for atmospheric properties (temperature, surface gravity, and metallicity) derived from different observational techniques (photometry, spectroscopy, asteroseismology, and exoplanet transits), which were then homogeneously fitted to a grid of Dartmouth stellar isochrones. We use broadband photometry and asteroseismology to characterize 11,532 Kepler targets which were previously unclassified in the Kepler Input Catalog (KIC). We report the detection of oscillations in 2,762 of these targets, classifying them as giant stars and increasing the number of known oscillating giant stars observed by Kepler by ∼ 20% to a total of ∼ 15,500 stars. Typical uncertainties in derived radii and masses are ∼ 40% and ∼ 20%, respectively, for stars with photometric constraints only, and 5 − 15% and ∼ 10% for stars based on spectroscopy and/or asteroseismology, although these uncertainties vary strongly with spectral type and luminosity class. A comparison with the Q1-Q12 catalog shows a systematic decrease in the radii of M dwarfs, while radii for K dwarfs decrease or increase depending on the Q1-Q12 provenance (KIC or Yonsei-Yale isochrones). Radii of F-G dwarfs are on average unchanged, with the exception of newly identified giants. The Q1-Q16 star properties catalog is a first step towards an improved characterization of all Kepler targets to support planet occurrence studies.

SECURE MASS MEASUREMENTS FROM TRANSIT TIMING: 10 KEPLER EXOPLANETS BETWEEN 3 AND 8 M ⊕ WITH DIVERSE DENSITIES AND INCIDENT FLUXES

“…We adopt the analytic model of Mandel & Agol (2002) for the transit profile, with quadratic limb-darkening parameters from Claret & Bloemen (2011). Atmospheric parameters come from the most recent version of the Kepler Input Catalog retrieval from the NASA Exoplanet Archive (Huber et al 2014). These include parameters based on either spectroscopy or photometry depending on what observations are available.…”

SOPHIE velocimetry ofKeplertransit candidates

“…We are therefore confident that those criteria select the majority of the EGPs transiting FGK dwarfs. We did not select the giantplanet candidates based on their estimated radius because this value depends strongly on the 40% uncertain estimated radius of the host (Huber et al 2014). The complete selection of candidates based on their estimated radius is therefore uncertain.…”

“…They are displayed in Fig. 1 and listed in Table B.1, together with their various ID, their main orbital and transit parameters (period, depth, and scaled distance to star), as well as their host properties as determined by Huber et al (2014). Santerne et al (2012b) used the same criteria in terms of magnitude limits and transit depths, but the candidate periods were limited to 25 days.…”

Photometric and Astrometric Vagaries of the Enigma Star Kic 8462852

“…for KIC 8462852 (Huber et al 2014) and a distance of 500 pc to the star, the cross-section of the occultation events during the 4 years of Kepler's main mission is ḿ -0.125 10 6 in arcsec 2 , where μ is the relative proper motion of the swarm and the target star in mas yr −1 . The expected number of occultation Figure 11.…”