Properties of 42 Solar-type Kepler Targets from the Asteroseismic Modeling Portal

Metcalfe, T. S. and Creevey, O. L. and Dogan, G. and Mathur, S. and Xu, H. and Bedding, T. R. and Chaplin, W. J. and Christensen-Dalsgaard, J. and Karoff, C. and Trampedach, R. and Benomar, O. and Brown, B. P. and Buzasi, D. L. and Campante, T. L. and Çelik, Z. and Cunha, M. S. and Davies, G. R. and Deheuvels, S. and Derekas, Aliz and Di Mauro, M. P. and García, R. A. and Guzik, J. A. and Howe, R. and MacGregor, K. B. and Mazumdar, A. and Montalbán, J. and Monteiro, M. J. P. F. G. and Salabert, D. and Serenelli, A. and Stello, D. (2014) Properties of 42 Solar-type Kepler Targets from the Asteroseismic Modeling Portal. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 214 (2). ISSN 0067-0049

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Abstract

Recently the number of main-sequence and subgiant stars exhibiting solar-like oscillations that are resolved into individual mode frequencies has increased dramatically. While only a few such data sets were available for detailed modeling just a decade ago, the Kepler mission has produced suitable observations for hundreds of new targets. This rapid expansion in observational capacity has been accompanied by a shift in analysis and modeling strategies to yield uniform sets of derived stellar properties more quickly and easily. We use previously published asteroseismic and spectroscopic data sets to provide a uniform analysis of 42 solar-type Kepler targets from the Asteroseismic Modeling Portal (AMP). We find that fitting the individual frequencies typically doubles the precision of the asteroseismic radius, mass and age compared to grid-based modeling of the global oscillation properties, and improves the precision of the radius and mass by about a factor of three over empirical scaling relations. We demonstrate the utility of the derived properties with several applications.

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