Asteroseismic analysis of solar-like star KIC 6225718: constraints on stellar parameters and core overshooting
文献类型：期刊论文
| 作者 | Tian, Z. J.1; Bi, S. L.1; Yang, W. M.1; Chen, Y. Q.2; Liu, Z. E.1; Liu, K.1; Li, T. D.3; Ge, Z. S.1; Yu, J.1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2014-12-11 |
| 卷号 | 445期号:3页码:2999-3008 |
| 关键词 | methods: data analysis stars: fundamental parameters stars: individual: KIC 6225718 stars: oscillations |
| 英文摘要 | We analyse five seasons of short-cadence data of a solar-type star of spectral type F: KIC 6225718 observed by Kepler. We obtain the power spectrum of this star by applying the Lomb-Scargle periodogram to the smoothed time series. By applying the autocorrelation technique to the power spectrum, we derive the large-frequency separation Delta nu = 105.78 +/- 0.65 mu Hz and the frequency of maximum power nu(max) = 2301 +/- 21 mu Hz. We identify 33 p modes with angular degrees of l = 0-2 in the frequency range 1600-2800 mu Hz of the power spectrum with Bayesian Markov Chain Monte Carlo algorithms. In order to determine the parameters of the star accurately, we construct a grid of stellar models with core overshooting using the Yale stellar evolution code and then perform preliminary seismological analysis. With both asteroseismic and non-asteroseismic constraints, the following range of stellar parameters is estimated: mass M = 1.10(-0.03)(+0.04) M-circle dot, radius R = 1.22(-0.01)(+0.01) R-circle dot and age t = 3.35(-0.75)(+0.36) Gyr for this star. In addition, we analyse the effects of overshooting on stellar interiors and find that the upper limit of the overshooting parameter alpha(ov) is approximately 0.2 for this star. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000346962900068 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6539]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Z. J.,Bi, S. L.,Yang, W. M.,et al. Asteroseismic analysis of solar-like star KIC 6225718: constraints on stellar parameters and core overshooting[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,445(3):2999-3008. |
| APA | Tian, Z. J..,Bi, S. L..,Yang, W. M..,Chen, Y. Q..,Liu, Z. E..,...&Yu, J..(2014).Asteroseismic analysis of solar-like star KIC 6225718: constraints on stellar parameters and core overshooting.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,445(3),2999-3008. |
| MLA | Tian, Z. J.,et al."Asteroseismic analysis of solar-like star KIC 6225718: constraints on stellar parameters and core overshooting".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 445.3(2014):2999-3008. |
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来源：国家天文台
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