中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 国家天文台
  3. 中国科学院国家天文台
  4. 光学天文研究部
Episodic mass ejections from common-envelope objects

文献类型：期刊论文

作者Ivanova, Natasha1,5; Clayton, Matthew4; Podsiadlowski, Philipp4; Justham, Stephen1,2,3
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2017-09-01
卷号470期号:2页码:1788-1808
关键词Hydrodynamics Binaries: Close Stars: Mass-loss
DOI10.1093/mnras/stx1290
文献子类Article
英文摘要After the initial fast spiral-in phase experienced by a common-envelope binary, the system may enter a slow, self-regulated phase, possibly lasting hundreds of years, in which all the energy released by orbital decay can be efficiently transported to the surface, where it is radiated away. If the remaining envelope is to be removed during this phase, this removal must occur through some as-yet-undetermined mechanism. We carried out 1D hydrodynamic simulations of a low-mass red giant undergoing a synthetic common-envelope event in such a slow spiral-in phase, using the stellar evolutionary code MESA. We simulated the heating of the envelope due to frictional dissipation from a binary companion's orbit in multiple configurations and investigated the response of the giant's envelope. We find that our model envelopes become dynamically unstable and develop large-amplitude pulsations, with periods in the range 3-20 yr and very short growth time-scales of similar order. The shocks and associated rebounds that emerge as these pulsations grow are in some cases strong enough to dynamically eject shells of matter of up to 0.1 M circle dot, similar to 10 per cent of the mass of the envelope, from the stellar surface at above escape velocity. These ejections are seen to repeat within a few decades, leading to a time-averaged mass-loss rate of the order of 10-3 M circle dot yr(-1), which is sufficiently high to represent a candidate mechanism for removing the entire envelope over the duration of the slow spiral-in phase.
WOS关键词STELLAR ASTROPHYSICS MESA ; ASYMPTOTIC-GIANT-BRANCH ; NEUTRON-STAR COMPANION ; PERIOD VARIABLE-STARS ; SUBDWARF-B-STARS ; PLANETARY-NEBULAE ; BINARY STARS ; EVOLUTION ; PHASE ; RECOMBINATION
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000406839900037
资助机构Science and Technology Facilities Council(ST/K502236/1) ; Science and Technology Facilities Council(ST/K502236/1) ; Canada Research Chairs programme ; Canada Research Chairs programme ; NSERC ; NSERC ; Strategic Priority Research Program of the Chinese Academy of Sciences 'Multi-waveband Gravitational Wave Universe'(XDB23040000) ; Strategic Priority Research Program of the Chinese Academy of Sciences 'Multi-waveband Gravitational Wave Universe'(XDB23040000) ; Chinese Academy of Sciences (President's International Fellowship Initiative)(2011Y2JB07) ; Chinese Academy of Sciences (President's International Fellowship Initiative)(2011Y2JB07) ; National Natural Science Foundation of China(11250110055 ; National Natural Science Foundation of China(11250110055 ; National Science Foundation(PHY-1066293 ; National Science Foundation(PHY-1066293 ; 11350110324 ; 11350110324 ; NSF PHY11-25915) ; NSF PHY11-25915) ; 11633005) ; 11633005) ; Science and Technology Facilities Council(ST/K502236/1) ; Science and Technology Facilities Council(ST/K502236/1) ; Canada Research Chairs programme ; Canada Research Chairs programme ; NSERC ; NSERC ; Strategic Priority Research Program of the Chinese Academy of Sciences 'Multi-waveband Gravitational Wave Universe'(XDB23040000) ; Strategic Priority Research Program of the Chinese Academy of Sciences 'Multi-waveband Gravitational Wave Universe'(XDB23040000) ; Chinese Academy of Sciences (President's International Fellowship Initiative)(2011Y2JB07) ; Chinese Academy of Sciences (President's International Fellowship Initiative)(2011Y2JB07) ; National Natural Science Foundation of China(11250110055 ; National Natural Science Foundation of China(11250110055 ; National Science Foundation(PHY-1066293 ; National Science Foundation(PHY-1066293 ; 11350110324 ; 11350110324 ; NSF PHY11-25915) ; NSF PHY11-25915) ; 11633005) ; 11633005)
源URL[http://ir.bao.ac.cn/handle/114a11/20065]  
专题国家天文台_光学天文研究部
作者单位1.Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100012, Peoples R China
4.Univ Oxford, Dept Phys, Keble Rd, Oxford OX1 3RH, England
5.Univ Alberta, Dept Phys, 11322-89 Ave, Edmonton, AB T6G 2E7, Canada
推荐引用方式
GB/T 7714		 Ivanova, Natasha,Clayton, Matthew,Podsiadlowski, Philipp,et al. Episodic mass ejections from common-envelope objects[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,470(2):1788-1808.
APA Ivanova, Natasha,Clayton, Matthew,Podsiadlowski, Philipp,&Justham, Stephen.(2017).Episodic mass ejections from common-envelope objects.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,470(2),1788-1808.
MLA Ivanova, Natasha,et al."Episodic mass ejections from common-envelope objects".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 470.2(2017):1788-1808.

入库方式： OAI收割

来源：国家天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。