期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 435, 期 1, 页码 242-254出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stt1289
关键词
methods: statistical; stars: oscillations
资金
- Natural Sciences and Engineering Research Council of Canada
- Canada Foundation for Innovation (CFI)
- Atlantic Canada Opportunities Agency (ACOA)
- province of Newfoundland
- province of Labrador
- province of Nova Scotia
- province of New Brunswick
- Austrian Science Fund [FWF P23608]
We study 23 previously published Kepler targets to perform a consistent grid-based Bayesian asteroseismic analysis and compare our results to those obtained via the Asteroseismic Modelling Portal. We find differences in the derived stellar parameters of many targets and their uncertainties. While some of these differences can be attributed to systematic effects between stellar evolutionary models, we show that the different methodologies deliver incompatible uncertainties for some parameters. Using non-adiabatic models and our capability to measure surface effects, we also investigate the dependency of these surface effects on the stellar parameters. Our results suggest a dependence of the magnitude of the surface effect on the mixing length parameter which also, but only minimally, affects the determination of stellar parameters. While some stars in our sample show no surface effect at all, the most significant surface effects are found for stars that are close to the Sun's position in the Hertzsprung-Russell diagram.
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