Properties of 42 Solar-type Kepler Targets from the Asteroseismic Modeling Portal
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. 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.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- October 2014
- DOI:
- 10.1088/0067-0049/214/2/27
- arXiv:
- arXiv:1402.3614
- Bibcode:
- 2014ApJS..214...27M
- Keywords:
-
- methods: numerical;
- stars: evolution;
- stars: interiors;
- stars: oscillations;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 12 emulateapj pages, 9 figures, 1 online-only extended figure, 1 table, ApJS accepted (typo corrected in Eq.8)