Massive runaway and walkaway stars A study of the kinematical imprints of the physical processes governing the evolution and explosion of their binary progenitors
文献类型：期刊论文
| 作者 | Renzo, M.2; Zapartas, E.2; de Mink, S. E.2; Gotberg, Y.2; Justham, S.3,4; Farmer, R. J.2; Izzard, R. G.5,6; Toonen, S.2; Sana, H.1 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2019-04-11 |
| 卷号 | 624页码:28 |
| ISSN号 | 1432-0746 |
| 关键词 | astrometry binaries: close stars: evolution stars: kinematics and dynamics stars: massive supernovae: general |
| DOI | 10.1051/0004-6361/201833297 |
| 英文摘要 | We perform an extensive numerical study of the evolution of massive binary systems to predict the peculiar velocities that stars obtain when their companion collapses and disrupts the system. Our aim is to (i) identify which predictions are robust against model uncertainties and assess their implications, (ii) investigate which physical processes leave a clear imprint and may therefore be constrained observationally, and (iii) provide a suite of publicly available model predictions to allow for the use of kinematic constraints from the Gaia mission. We find that 22(-8)(+26)% of all massive binary systems merge prior to the first core-collapse in the system. Of the remainder, 86(-9)(+11)% become unbound because of the core-collapse. Remarkably, this rarely produces runaway stars (observationally defined as stars with velocities above 30 km s(-1)). These are outnumbered by more than an order of magnitude by slower unbound companions, or "walkaway stars". This is a robust outcome of our simulations and is due to the reversal of the mass ratio prior to the explosion and widening of the orbit, as we show analytically and numerically. For stars more massive than 15 M-circle dot, we estimate that 10(-8)(+5)% are walkaways and only 0.5(-0.4)(+1.0)% are runaways, nearly all of which have accreted mass from their companion. Our findings are consistent with earlier studies; however, the low runaway fraction we find is in tension with observed fractions of about 10%. Thus, astrometric data on presently single massive stars can potentially constrain the physics of massive binary evolution. Finally, we show that the high end of the mass distributions of runaway stars is very sensitive to the assumed black hole natal kicks, and we propose this as a potentially stringent test for the explosion mechanism. We also discuss companions remaining bound that can evolve into X-ray and gravitational wave sources. |
| WOS关键词 | X-RAY BINARIES ; COMPACT OBJECT FORMATION ; PRE-SUPERNOVA OUTBURSTS ; RADIATION-DRIVEN WINDS ; FIELD O-STARS ; NEUTRON-STAR ; BLACK-HOLE ; STELLAR EVOLUTION ; CORE-COLLAPSE ; WOLF-RAYET |
| 资助项目 | National Science Foundation[NSF PHY11-25915] ; European Unions Horizon 2020 research and innovation programme from the European Research Council (ERC)[715063] ; Science and Technology Facilities Council (STFC)[ST/L003910/1] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | EDP SCIENCES S A |
| WOS记录号 | WOS:000464093100002 |
| 资助机构 | National Science Foundation ; National Science Foundation ; European Unions Horizon 2020 research and innovation programme from the European Research Council (ERC) ; European Unions Horizon 2020 research and innovation programme from the European Research Council (ERC) ; Science and Technology Facilities Council (STFC) ; Science and Technology Facilities Council (STFC) ; National Science Foundation ; National Science Foundation ; European Unions Horizon 2020 research and innovation programme from the European Research Council (ERC) ; European Unions Horizon 2020 research and innovation programme from the European Research Council (ERC) ; Science and Technology Facilities Council (STFC) ; Science and Technology Facilities Council (STFC) ; National Science Foundation ; National Science Foundation ; European Unions Horizon 2020 research and innovation programme from the European Research Council (ERC) ; European Unions Horizon 2020 research and innovation programme from the European Research Council (ERC) ; Science and Technology Facilities Council (STFC) ; Science and Technology Facilities Council (STFC) ; National Science Foundation ; National Science Foundation ; European Unions Horizon 2020 research and innovation programme from the European Research Council (ERC) ; European Unions Horizon 2020 research and innovation programme from the European Research Council (ERC) ; Science and Technology Facilities Council (STFC) ; Science and Technology Facilities Council (STFC) |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/26003]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Renzo, M. |
| 作者单位 | 1.Katholieke Univ Leuven, Inst Astron, Celestijnenlaan 200 D, B-3001 Leuven, Belgium 2.Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 XH Amsterdam, Netherlands 3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100012, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 5.Univ Surrey, Fac Engn & Phys Sci, Astrophys Res Grp, Guildford GU2 7XH, Surrey, England 6.Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England |
| 推荐引用方式 GB/T 7714 | Renzo, M.,Zapartas, E.,de Mink, S. E.,et al. Massive runaway and walkaway stars A study of the kinematical imprints of the physical processes governing the evolution and explosion of their binary progenitors[J]. ASTRONOMY & ASTROPHYSICS,2019,624:28. |
| APA | Renzo, M..,Zapartas, E..,de Mink, S. E..,Gotberg, Y..,Justham, S..,...&Sana, H..(2019).Massive runaway and walkaway stars A study of the kinematical imprints of the physical processes governing the evolution and explosion of their binary progenitors.ASTRONOMY & ASTROPHYSICS,624,28. |
| MLA | Renzo, M.,et al."Massive runaway and walkaway stars A study of the kinematical imprints of the physical processes governing the evolution and explosion of their binary progenitors".ASTRONOMY & ASTROPHYSICS 624(2019):28. |
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来源：国家天文台
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