| The orbital period-mass ratio relation of wide sdB plus MS binaries and its application to the stability of RLOF | |
Vos, Joris1,2; Vuckovic, Maja1; Chen XF(陈雪飞)3,4,5 ; Han ZW(韩占文)3,4,5; Boudreaux, Thomas6; Barlow, Brad N.6; Ostensen, Roy7; Nemeth, Peter8,9
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| 发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 2019-02-01 | |
| 卷号 | 482期号:4页码:4592-4605 |
| DOI | 10.1093/mnras/sty3017 |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | binaries: spectroscopic stars: evolution stars: fundamental parameters subdwarfs |
| 摘要 | Wide binaries with hot subdwarf-B (sdB) primaries and main sequence companions are thought to form only through stable Roche-lobe overflow (RLOF) of the sdB progenitor near the tip of the red giant branch (RGB). We present the orbital parameters of 11 new long-period composite sdB binaries based on spectroscopic observations obtained with the UVES, FEROS, and CHIRON spectrographs. Using all wide sdB binaries with known orbital parameters, 23 systems, the observed period distribution is found to match very well with theoretical predictions. A second result is the strong correlation between the orbital period (P) and the mass ratio (q) in the observed wide sdB binaries. In the P-q plane two distinct groups emerge, with the main group (18 systems) showing a strong correlation of lower mass ratios at longer orbital periods. The second group comprises systems that are thought to be formed from higher mass progenitors. Based on theoretical models, a correlation between the initial mass ratio at the start of RLOF and core mass of the sdB progenitor is found, which defines a mass-ratio range at which RLOF is stable on the RGB. |
| 资助项目 | Fondo Nacional de DesarrolloCientifico y Technologico (FONDECYT)[3160504] ; Natural Science Foundation of China[11733008] ; Natural Science Foundation of China[11521303] ; Yunnan province[2017HC018] ; High Point University ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes[088.D-0364(A)] ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes[093.D-0629(A)] ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes[096.D-0180(A)] ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes[097.D-0110(A)] ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes[098.D-0018(A)] ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes[099.D-0014(A)] ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes[099.A-9019(A)] ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes[0100.D-0082(A)] ; CTIO/SMARTS 1.5-m telescope through the CNTAC[CN2018A-23] |
| 项目资助者 | Fondo Nacional de DesarrolloCientifico y Technologico (FONDECYT)[3160504] ; Natural Science Foundation of China[11733008, 11521303] ; Yunnan province[2017HC018] ; High Point University ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes[088.D-0364(A), 093.D-0629(A), 096.D-0180(A), 097.D-0110(A), 098.D-0018(A), 099.D-0014(A), 099.A-9019(A), 0100.D-0082(A)] ; CTIO/SMARTS 1.5-m telescope through the CNTAC[CN2018A-23] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
| 文章类型 | Article |
| 出版者 | OXFORD UNIV PRESS |
| 出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
| ISSN | 0035-8711 |
| URL | 查看原文 |
| WOS记录号 | WOS:000462327300023 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | SUBDWARF-B-STARS ; ORIGIN ; SPECTROGRAPH |
| EI入藏号 | 20221611997689 |
| EI主题词 | Giant stars |
| EI分类号 | 657.2 Extraterrestrial Physics and Stellar Phenomena |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/19637 |
| 专题 | 大样本恒星演化研究组 中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Vos, Joris |
| 作者单位 | 1.Instituto de F´ısica y Astronom´ıa, Universidad de Valparaiso, Gran Breta˜na 1111, Playa Ancha, Valpara´ıso 2360102, Chile 2.Institut f¨ur Physik und Astronomie, Universit¨at Potsdam, Karl-Liebknecht-Str. 24/25, D-14476 Golm, Germany 3.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, P. R. China 4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, P. R. China 5.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, P. R. China 6.Department of Physics, High Point University, One University Parkway, High Point, NC 27268, USA 7.Department of Physics, Astronomy, and Materials Science, Missouri State University, Springfield, MO 65804, USA 8.Astronomical Institute of the Czech Academy of Sciences, CZ-251 65 Ondˇrejov, Czech Republic 9.Astroserver.org, 8533 Malomsok, Hungary |
| 推荐引用方式 GB/T 7714 | Vos, Joris,Vuckovic, Maja,Chen XF,et al. The orbital period-mass ratio relation of wide sdB plus MS binaries and its application to the stability of RLOF[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,482(4):4592-4605. |
| APA | Vos, Joris.,Vuckovic, Maja.,Chen XF.,Han ZW.,Boudreaux, Thomas.,...&Nemeth, Peter.(2019).The orbital period-mass ratio relation of wide sdB plus MS binaries and its application to the stability of RLOF.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,482(4),4592-4605. |
| MLA | Vos, Joris,et al."The orbital period-mass ratio relation of wide sdB plus MS binaries and its application to the stability of RLOF".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 482.4(2019):4592-4605. |
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