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Revised Stellar Properties of Kepler Targets for the Q1-17 (DR25) Transit Detection Run

Mathur, Savita and Huber, Daniel and Batalha, Natalie M. and Ciardi, David R. and Bastien, Fabienne A. and Bieryla, Allyson and Buchhave, Lars A. and Cochran, William D. and Endl, Michael and Esquerdo, Gilbert A. and Furlan, Elise and Howard, Andrew and Howell, Steve B. and Isaacson, Howard and Latham, David W. and MacQueen, Phillip J. and Silva, David R. (2017) Revised Stellar Properties of Kepler Targets for the Q1-17 (DR25) Transit Detection Run. Astrophysical Journal Supplement Series, 229 (2). Art. No. 30. ISSN 1538-4365. doi:10.3847/1538-4365/229/2/30.

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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 $\mathrm{log}g$ 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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Mathur, Savita0000-0002-0129-0316
Huber, Daniel0000-0001-8832-4488
Ciardi, David R.0000-0002-5741-3047
Bastien, Fabienne A.0000-0002-7243-1921
Bieryla, Allyson0000-0001-6637-5401
Buchhave, Lars A.0000-0003-1605-5666
Cochran, William D.0000-0001-9662-3496
Endl, Michael0000-0002-7714-6310
Esquerdo, Gilbert A.0000-0002-9789-5474
Furlan, Elise0000-0001-9800-6248
Howard, Andrew0000-0001-8638-0320
Howell, Steve B.0000-0002-2532-2853
Isaacson, Howard0000-0002-0531-1073
Latham, David W.0000-0001-9911-7388
Silva, David R.0000-0002-7678-2155
Additional Information:© 2017. The American Astronomical Society. Received 2016 September 12; revised 2016 December 21; accepted 2016 December 22; published 2017 March 29. The authors would like to thank Michael Haas and Eric Gaidos for useful discussions. S.M. would like to thank R. A. García and the CEA Saclay (France) for their computing resources. S.M. and D.H. acknowledge support by the National Aeronautics and Space Administration under Grant NNX14AB92G issued through the Kepler Participating Scientist Program, and D.H. acknowledges support by the Australian Research Council's Discovery Projects funding scheme (project number DE140101364). F.B. is supported by NASA through Hubble Fellowship grant #HST-HF2-51335 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS5-26555.
Group:Infrared Processing and Analysis Center (IPAC), Astronomy Department
Funding AgencyGrant Number
Australian Research CouncilDE140101364
NASA Hubble FellowshipHST-HF2-51335
Subject Keywords:catalogs; planetary systems; stars: distances; stars: evolution; stars: fundamental parameters
Issue or Number:2
Record Number:CaltechAUTHORS:20170331-090526348
Persistent URL:
Official Citation:Savita Mathur et al 2017 ApJS 229 30
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75566
Deposited By: George Porter
Deposited On:31 Mar 2017 16:24
Last Modified:01 Jun 2023 23:55

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