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

By S. Mathur, D. Huber, N. Batalha, D. Ciardi, F. Bastien, A. Bieryla, Lars A. Buchhave, W. Cochran, M. Endl, G. Esquerdo and 7 more. 2016

259 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/326c3316fe98eb544fe0046c27855525c973febb

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. D. Huber
2. Timothy Morton
3. E. Gaidos
4. E. Petigura
5. B. Fulton
6. Andrew W. Howard
7. J. Johnson
8. G. Marcy

In Instrumentation

1. D. Huber
2. Timothy Morton
3. E. Gaidos
4. E. Petigura
5. B. Fulton
6. Andrew W. Howard
7. J. Johnson
8. G. Marcy

Citations in the corpus

• Asteroseismology and Gaia: Testing Scaling Relations Using 2200 Kepler Stars with TGAS Parallaxes (2017, background): “Furthermore, Gaia DR2 is expected to provide parallaxes for nearly all ≈20,000 oscillating Kepler stars (e.g., Mathur et al. 2017), allowing unprecedented scaling relation tests and studies, which can combine frequency modeling and Gaia data to test and improve interior models from the main…”
• The California-Kepler Survey. IV. Metal-rich Stars Host a Greater Diversity of Planets (2017, methodology): “We begin with the Mathur et al. (2017) catalog that lists all 199991 stars observed at some point during the Kepler mission.”
• The Close Binary Fraction of Solar-type Stars Is Strongly Anticorrelated with Metallicity (2018, methodology): “Mathur et al. (2017) compiled dozens of follow-up surveys and provided spectroscopic metallicities [Fe/H]spec for 16,289 Kepler stars.”
• The California-Kepler Survey. VII. Precise Planet Radii Leveraging Gaia DR2 Reveal the Stellar Mass Dependence of the Planet Radius Gap (2018, methodology): “Until recently, the properties of the vast majority of Kepler planet host stars were based on photometry alone, i.e., from the Kepler Input Catalog (KIC) and its updates (Brown et al. 2011; Huber et al. 2014; Mathur et al. 2017).”
• The California-Kepler Survey. III. A Gap in the Radius Distribution of Small Planets (2017, methodology): “…considered injected impact parameters less than 0.7, injected periods shorter than 100 days, Kp ≤ 14.2, 4700 K < Teff < 6500 K, and stellar radii compatible with Equation 1 based on the values in the Stellar17 catalog18 prepared by the Kepler stellar parameters working group (Mathur et al. 2016).”
• Revised Radii of Kepler Stars and Planets Using Gaia Data Release 2 (2018, methodology): “As a result, 70% of the overall Kepler population in the latest version of the Kepler Stellar Properties Catalog (KSPC DR25, Mathur et al. 2017) still have log g values determined from photometry.”
• The Exoplanet Population Observation Simulator. I. The Inner Edges of Planetary Systems (2018, methodology): “We included all stars that were fully searched by the Kepler pipeline, for which stellar properties were available in the Mathur et al. (2017) catalog, and for which all detection metrics were available on the exoplanet archive.8 The detection efficiencies were evaluated on a grid with 20…”
• Asteroseismology of 16,000 Kepler Red Giants: Global Oscillation Parameters, Masses, and Radii (2018, methodology): “Recently, Mathur et al. (2017) delivered a characterization of the stellar fundamental properties of Kepler targets for a transit detection run.”
• The Gaia–Kepler Stellar Properties Catalog. I. Homogeneous Fundamental Properties for 186,301 Kepler Stars (2020, methodology): “Typical errors are on the order of 0.05 dex, which is a dramatic improvement over the ≈ 0.2 dex log g median error provided in Mathur et al. (2017) due to the strong radius constraints from Gaia DR2 parallaxes.”