The APOKASC Catalog: An Asteroseismic and Spectroscopic Joint Survey of Targets in the Kepler Fields
Creators: name: Pinsonneault, Marc H.
name: Elsworth, Yvonne
name: Epstein, Courtney
name: Hekker, Saskia
name: Mészáros, Sz.
name: Chaplin, William J.
name: Johnson, Jennifer A.
name: García, Rafael A.
name: Holtzman, Jon
name: Mathur, Savita
name: Pérez, Ana García
name: Aguirre, Victor Silva
name: Girardi, Léo
name: Basu, Sarbani
name: Shetrone, Matthew
name: Stello, Dennis
name: Prieto, Carlos Allende
name: An, Deokkeun
name: Beck, Paul
name: Beers, Timothy C.
name: Bizyaev, Dmitry
name: Bloemen, Steven
name: Bovy, Jo
name: Cunha, Katia
name: De Ridder, Joris
name: Frinchaboy, Peter M.
name: Garcia-Hernández, D. A.
name: Gilliland, Ronald
name: Harding, Paul
name: Hearty, Fred R.
name: Huber, Daniel
name: Ivans, Inese
name: Kallinger, Thomas
name: Majewski, Steven R.
name: Metcalfe, Travis S.
name: Miglio, Andrea
name: Mosser, Benoit
name: Muna, Demitri
name: Nidever, David L.
name: Schneider, Donald P.
name: Serenelli, Aldo
name: Smith, Verne V.
name: Tayar, Jamie
name: Zamora, Olga
name: Zasowski, Gail
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present the first APOKASC catalog of spectroscopic and asteroseismic properties of 1916 red giants observed in the Kepler fields. The spectroscopic parameters provided from the Apache Point Observatory Galactic Evolution Experiment project are complemented with asteroseismic surface gravities, masses, radii, and mean densities determined by members of the Kepler Asteroseismology Science Consortium. We assess both random and systematic sources of error and include a discussion of sample selection for giants in the Kepler fields. Total uncertainties in the main catalog properties are of order 80 K in Teff , 0.06 dex in [M/H], 0.014 dex in log g, and 12% and 5% in mass and radius, respectively; these reflect a combination of systematic and random errors. Asteroseismic surface gravities are substantially more precise and accurate than spectroscopic ones, and we find good agreement between their mean values and the calibrated spectroscopic surface gravities. There are, however, systematic underlying trends with Teff and log g. Our effective temperature scale is between 0-200 K cooler than that expected from the Infrared Flux Method, depending on the adopted extinction map, which provides evidence for a lower value on average than that inferred for the Kepler Input Catalog (KIC). We find a reasonable correspondence between the photometric KIC and spectroscopic APOKASC metallicity scales, with increased dispersion in KIC metallicities as the absolute metal abundance decreases, and offsets in Teff and log g consistent with those derived in the literature. We present mean fitting relations between APOKASC and KIC observables and discuss future prospects, strengths, and limitations of the catalog data.
description: 49 pages. ApJSupp, in press. Full machine-readable ascii files available under ancillary data. Categories: Kepler targets, asteroseismology, large spectroscopic surveys