Journal
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Volume 215, Issue 2, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0067-0049/215/2/19
Keywords
catalogs; stars: abundances; stars: fundamental parameters; stars: oscillations (including pulsations); surveys
Categories
Funding
- NSF [AST-1211673, AST-1105930, AST11-09888]
- NASA Postdoctoral Program at Ames Research Center
- NASA [NNX14AB92G, NNX13AE70G, NNX12AE17G]
- Australian Research Council
- Danish National Research Foundation [DNRF106]
- European Research Council [267864]
- European Research Council under the European Community's Seventh Framework Programme (FP7)/ERC (StellarAges) [338251]
- Deutsche Forschungsgemeinschaft (DFG) [SFB 963/1]
- UK Science and Technology Facilities Council (STFC)
- National Research Foundation of Korea [2010-0027910]
- MICINN [AYA2011-24704]
- ESF EUROCORES Program EuroGENESIS (MICINN) [EUI2009-04170]
- U.S. National Science Foundation [PHY 0822648]
- Spanish Ministry of Economy and Competitiveness [AYA-2011-27754]
- Alfred P. Sloan Foundation
- National Science Foundation
- U.S. Department of Energy Office of Science
- University of Arizona
- Brazilian Participation Group
- Brookhaven National Laboratory
- Carnegie Mellon University
- University of Florida
- French Participation Group
- German Participation Group
- Harvard University
- Instituto de Astrofisica de Canarias
- Michigan State/Notre Dame/JINA Participation Group
- Johns Hopkins University
- Lawrence Berkeley National Laboratory
- Max Planck Institute for Astrophysics
- Max Planck Institute for Extraterrestrial Physics
- New Mexico State University
- New York University
- Ohio State University
- Pennsylvania State University
- University of Portsmouth
- Princeton University
- Spanish Participation Group
- University of Tokyo
- University of Utah
- Vanderbilt University
- University of Virginia
- University of Washington
- Yale University
- Austrian Science Fund (FWF) [P 23608] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Physics [1430152] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1211144, 1211673] Funding Source: National Science Foundation
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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 the order of 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 and 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 T-eff 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.
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