Precise Ages of Field Stars from White Dwarf Companions in Gaia DR2
文献类型：期刊论文
| 作者 | Qiu,Dan1,2; Tian,Hai-Jun1,2; Wang,Xi-Dong2; Nie,Jia-Lu3; Hippel,Ted von4; Liu,Gao-Chao1,2; Fouesneau,Morgan5; Rix,Hans-Walter5 |
| 刊名 | The Astrophysical Journal Supplement Series
 |
| 出版日期 | 2021-04-01 |
| 卷号 | 253期号:2 |
| 关键词 | Stellar ages Wide binary stars Field stars Markov chain Monte Carlo Bayesian statistics Main sequence stars White dwarf stars Zero-age main sequence stars Stellar evolutionary tracks Initial mass function Photometry |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/abe468 |
| 英文摘要 | Abstract We analyze 4050 wide binary star systems involving a white dwarf (WD) and usually a main-sequence (MS) star, drawn from the large sample assembled by Tian et al. Using the modeling code BASE-9, we determine the system’s ages, the WD progenitors’ zero-age MS masses, the extinction values (AV), and the distance moduli. Discarding the cases with poor age convergences, we obtain ages for 3551 WDs, with a median age precision of στ/τ = 20%, and system ages typically in the range of 1–6 Gyr. We validated these ages against the very few known clusters and through cross validation of 236 WD-WD binaries. Under the assumption that the components are coeval in a binary system, this provides precise age constraints on the usually low-mass MS companions, mostly inaccessible by any other means. |
| 语种 | 英语 |
| WOS记录号 | IOP:0067-0049-253-2-ABE468 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/59224]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Tian,Hai-Jun |
| 作者单位 | 1.Center of Astronomy and Space Sciences, China Three Gorges University, Yichang 443002, People’s Republic of China 2.China Three Gorges University, Yichang 443002, People’s Republic of China; hjtian@lamost.org 3.Key Lab for Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China 4.Physical Sciences Department, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA 5.Max Planck Institute for Astronomy, K?nigstuhl 17, D-69117 Heidelberg, Germany |
| 推荐引用方式 GB/T 7714 | Qiu,Dan,Tian,Hai-Jun,Wang,Xi-Dong,et al. Precise Ages of Field Stars from White Dwarf Companions in Gaia DR2[J]. The Astrophysical Journal Supplement Series,2021,253(2). |
| APA | Qiu,Dan.,Tian,Hai-Jun.,Wang,Xi-Dong.,Nie,Jia-Lu.,Hippel,Ted von.,...&Rix,Hans-Walter.(2021).Precise Ages of Field Stars from White Dwarf Companions in Gaia DR2.The Astrophysical Journal Supplement Series,253(2). |
| MLA | Qiu,Dan,et al."Precise Ages of Field Stars from White Dwarf Companions in Gaia DR2".The Astrophysical Journal Supplement Series 253.2(2021). |
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来源：国家天文台
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