VERIFYING ASTEROSEISMICALLY DETERMINED PARAMETERS OF KEPLER STARS USING HIPPARCOS PARALLAXES: SELF-CONSISTENT STELLAR PROPERTIES AND DISTANCES

Journal Article · Thu Sep 20 00:00:00 EDT 2012 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/757/1/99· OSTI ID:22092242

Silva Aguirre, V.; Chaplin, W. J.; Bedding, T. R.; Christensen-Dalsgaard, J.; Kjeldsen, H. ^[1]; Casagrande, L. ^[2]; Basu, S. ^[3]; Campante, T. L.; Huber, D. ^[4]; Miglio, A.; Elsworth, Y.; Hekker, S. ^[5]; Serenelli, A. M.; Garcia, R. A.; Mathur, S. ^[6]; Ballot, J. ^[7]; Creevey, O. L. ^[8]; Gilliland, R. L. ^[9]; Metcalfe, T. S. ^[10]; others, and

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1. Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark)
2. Research School of Astronomy and Astrophysics, Mount Stromlo Observatory, The Australian National University, ACT 2611 (Australia)
3. Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States)
4. NASA Ames Research Center, Moffett Field, CA 94035 (United States)
5. School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT (United Kingdom)
6. Kavli Institute for Theoretical Physics, Santa Barbara, CA 93106 (United States)
7. CNRS, Institut de Recherche en Astrophysique et Planetologie, 14 avenue Edouard Belin, F-31400 Toulouse (France)
8. Laboratoire Lagrange, UMR 7293, Universite de Nice Sophia-Antipolis, CNRS, Observatoire de la Cote dAzur, F-06304 Nice Cedex 4 (France)
9. Center for Exoplanets and Habitable Worlds, The Pennsylvania State University, University Park, PA (United States)
10. Space Science Institute, Boulder, CO 80301 (United States)

Accurately determining the properties of stars is of prime importance for characterizing stellar populations in our Galaxy. The field of asteroseismology has been thought to be particularly successful in such an endeavor for stars in different evolutionary stages. However, to fully exploit its potential, robust methods for estimating stellar parameters are required and independent verification of the results is mandatory. With this purpose, we present a new technique to obtain stellar properties by coupling asteroseismic analysis with the InfraRed Flux Method. By using two global seismic observables and multi-band photometry, the technique allows us to obtain masses, radii, effective temperatures, bolometric fluxes, and hence distances for field stars in a self-consistent manner. We apply our method to 22 solar-like oscillators in the Kepler short-cadence sample, that have accurate Hipparcos parallaxes. Our distance determinations agree to better than 5%, while measurements of spectroscopic effective temperatures and interferometric radii also validate our results. We briefly discuss the potential of our technique for stellar population analysis and models of Galactic Chemical Evolution.

• OSTI ID: 22092242
• Journal Information: Astrophysical Journal, Vol. 757, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASTRONOMY
ASTROPHYSICS
BOLOMETERS
COUPLING
DISTANCE
GALACTIC EVOLUTION
GALAXIES
MASS
OSCILLATIONS
OSCILLATORS
PHOTOMETRY
STARS