Asteroseismology of 1523 misclassified red giants using Kepler data
文献类型：期刊论文
| 作者 | Yu, Jie1,2; Huber, Daniel1,2,3; Bedding, Timothy R.1,2; Stello, Dennis1,2; Murphy, Simon J.1,2; Xiang, Maosheng4; Bi, Shaolan5; Li, Tanda1,2,6
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2016-12-01 |
| 卷号 | 463期号:2页码:1297-1306 |
| 关键词 | techniques: photometric stars: oscillations |
| 英文摘要 | We analysed solar-like oscillations in 1523 Kepler red giants which have previously been misclassified as subgiants, with predicted nu(max) values [based on the Kepler Input Catalogue (KIC)] between 280 and 700 mu Hz. We report the discovery of 626 new oscillating red giants in our sample, in addition to 897 oscillators that were previously characterized by Hekker et al. from one quarter of Kepler data. Our sample increases the known number of oscillating low-luminosity red giants by 26 per cent (up to similar to 1900 stars). About three quarters of our sample are classified as ascending red giant branch stars, while the remainder are red-clump stars. A novel scheme was applied to determine Delta nu for 108 stars with nu(max) close to the Nyquist frequency (240 mu Hz < nu(max) < 320 mu Hz). Additionally, we identified 47 stars oscillating in the super-Nyquist frequency regime, up to 387 mu Hz, using long-cadence light curves. We show that the misclassifications are most likely due to large uncertainties in KIC surface gravities, and do not result from the absence of broad-band colours or from different physical properties such as reddening, spatial distribution, mass or metallicity. The sample will be valuable to study oscillations in low-luminosity red giants and to characterize planet candidates around those stars. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SOLAR-LIKE OSCILLATIONS ; SUPER-NYQUIST ASTEROSEISMOLOGY ; INPUT CATALOG ; STELLAR PARAMETERS ; MAGNETIC-FIELDS ; PERIOD SPACINGS ; CORE STRUCTURE ; STARS ; LAMOST ; GRAVITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000388122400014 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6852]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Univ Sydney, Sch Phys, SIfA, Sydney, NSW 2006, Australia 2.Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, Ny Munkegade 120, DK-8000 Aarhus C, Denmark 3.SETI Inst, 189 Bernardo Ave, Mountain View, CA 94043 USA 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 5.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 6.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Jie,Huber, Daniel,Bedding, Timothy R.,et al. Asteroseismology of 1523 misclassified red giants using Kepler data[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,463(2):1297-1306. |
| APA | Yu, Jie.,Huber, Daniel.,Bedding, Timothy R..,Stello, Dennis.,Murphy, Simon J..,...&Li, Tanda.(2016).Asteroseismology of 1523 misclassified red giants using Kepler data.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,463(2),1297-1306. |
| MLA | Yu, Jie,et al."Asteroseismology of 1523 misclassified red giants using Kepler data".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 463.2(2016):1297-1306. |
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来源：国家天文台
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