TY - JOUR
T1 - Revised Stellar Properties of Kepler Targets for the Q1-17 (DR25) Transit Detection Run
AU - Mathur, Savita
AU - Huber, Daniel
AU - Batalha, Natalie M.
AU - Ciardi, David R.
AU - Bastien, Fabienne A.
AU - Bieryla, Allyson
AU - Buchhave, Lars A.
AU - Cochran, William D.
AU - Endl, Michael
AU - Esquerdo, Gilbert A.
AU - Furlan, Elise
AU - Howard, Andrew
AU - Howell, Steve B.
AU - Isaacson, Howard
AU - Latham, David W.
AU - Macqueen, Phillip J.
AU - Silva, David R.
N1 - Publisher Copyright:
© 2017. The American Astronomical Society. All rights reserved.
PY - 2017/4
Y1 - 2017/4
N2 - The determination of exoplanet properties and occurrence rates using Kepler data critically depends on our knowledge of the fundamental properties (such as temperature, radius, and mass) of the observed stars. We present revised stellar properties for 197,096 Kepler targets observed between Quarters 1-17 (Q1-17), which were used for the final transiting planet search run by the Kepler Mission (Data Release 25, DR25). Similar to the Q1-16 catalog by Huber et al., the classifications are based on conditioning published atmospheric parameters on a grid of Dartmouth isochrones, with significant improvements in the adopted method and over 29,000 new sources for temperatures, surface gravities, or metallicities. In addition to fundamental stellar properties, the new catalog also includes distances and extinctions, and we provide posterior samples for each stellar parameter of each star. Typical uncertainties are ∼27% in radius, ∼17% in mass, and ∼51% in density, which is somewhat smaller than previous catalogs because of the larger number of improved constraints and the inclusion of isochrone weighting when deriving stellar posterior distributions. On average, the catalog includes a significantly larger number of evolved solar-type stars, with an increase of 43.5% in the number of subgiants. We discuss the overall changes of radii and masses of Kepler targets as a function of spectral type, with a particular focus on exoplanet host stars.
AB - The determination of exoplanet properties and occurrence rates using Kepler data critically depends on our knowledge of the fundamental properties (such as temperature, radius, and mass) of the observed stars. We present revised stellar properties for 197,096 Kepler targets observed between Quarters 1-17 (Q1-17), which were used for the final transiting planet search run by the Kepler Mission (Data Release 25, DR25). Similar to the Q1-16 catalog by Huber et al., the classifications are based on conditioning published atmospheric parameters on a grid of Dartmouth isochrones, with significant improvements in the adopted method and over 29,000 new sources for temperatures, surface gravities, or metallicities. In addition to fundamental stellar properties, the new catalog also includes distances and extinctions, and we provide posterior samples for each stellar parameter of each star. Typical uncertainties are ∼27% in radius, ∼17% in mass, and ∼51% in density, which is somewhat smaller than previous catalogs because of the larger number of improved constraints and the inclusion of isochrone weighting when deriving stellar posterior distributions. On average, the catalog includes a significantly larger number of evolved solar-type stars, with an increase of 43.5% in the number of subgiants. We discuss the overall changes of radii and masses of Kepler targets as a function of spectral type, with a particular focus on exoplanet host stars.
UR - http://www.scopus.com/inward/record.url?scp=85018404289&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85018404289&partnerID=8YFLogxK
U2 - 10.3847/1538-4365/229/2/30
DO - 10.3847/1538-4365/229/2/30
M3 - Article
AN - SCOPUS:85018404289
SN - 0067-0049
VL - 229
JO - Astrophysical Journal, Supplement Series
JF - Astrophysical Journal, Supplement Series
IS - 2
M1 - 30
ER -