The APOKASC Catalog: An Asteroseismic and Spectroscopic Joint Survey of Targets in the Kepler Fields
- Autor(en)
- Marc H. Pinsonneault, Yvonne Elsworth, Courtney Epstein, Saskia Hekker, Sz. Mészáros, William J. Chaplin, Jennifer A. Johnson, Rafael A. García, Jon Holtzman, Savita Mathur, Ana García Pérez, Victor Silva Aguirre, Léo Girardi, Sarbani Basu, Matthew Shetrone, Dennis Stello, Carlos Allende Prieto, Deokkeun An, Paul Beck, Timothy C. Beers, Dmitry Bizyaev, Steven Bloemen, Jo Bovy, Katia Cunha, Joris De Ridder, Peter M. Frinchaboy, D. A. García-Hernández, Ronald Gilliland, Paul Harding, Fred R. Hearty, Daniel Huber, Inese Ivans, Thomas Kallinger, Steven R. Majewski, Travis S. Metcalfe, Andrea Miglio, Benoit Mosser, Demitri Muna, David L. Nidever, Donald P. Schneider, Aldo Serenelli, Verne V. Smith, Jamie Tayar, Olga Zamora, Gail Zasowski
- Abstrakt
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 adiscussion of sample selection for giants in the Kepler fields. Total uncertainties in the main catalog properties are of the order of 80 K inT eff, 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 T eff 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 metallicityscales, with increased dispersion in KIC metallicities as the absolute metal abundance decreases, and offsets in T eff and log gconsistent with those derived in the literature. We present mean fitting relations between APOKASC and KIC observables and discuss futureprospects, strengths, and limitations of the catalog data.
- Organisation(en)
- Institut für Astrophysik
- Externe Organisation(en)
- Ohio State University, University of Birmingham, Aarhus University, Max-Planck-Institut für Sonnensystemforschung, Indiana University Bloomington, Eötvös Loránd University Budapest, Université Paris VII - Paris-Diderot, New Mexico State University, Space Science Institute, University of Virginia, INAF - Osservatorio Astronomico di Padova, Laboratório Interinstitucional de e-Astronomia (LIneA), Yale University, University of Texas, Austin, The University of Sydney, Instituto de Astrofísica de Canarias (IAC), Universidad de La Laguna, Ewha Womans University, University of Notre Dame, Radboud University, Princeton University, Observatório Nacional/MCT, University of Arizona, Katholieke Universiteit Leuven, Texas Christian University, Pennsylvania State University, Case Western Reserve University, National Aeronautics & Space Administration (NASA), SETI Institute, University of Utah, Université de recherche Paris Sciences et Lettres, University of Michigan, Spanish National Research Council (CSIC), National Optical Astronomy Observatory, Tucson, Johns Hopkins University
- Journal
- The Astrophysical Journal Supplement Series
- Band
- 215
- Seiten
- 19
- ISSN
- 0067-0049
- Publikationsdatum
- 2014
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103004 Astrophysik
- Schlagwörter
- ASJC Scopus Sachgebiete
- Astronomy and Astrophysics, Space and Planetary Science
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/18653181-39af-49b6-9b06-0e130fe03fad