THE IMPACT OF TYPE Ia SUPERNOVA EXPLOSIONS ON HELIUM COMPANIONS IN THE CHANDRASEKHAR-MASS EXPLOSION SCENARIO

	THE IMPACT OF TYPE Ia SUPERNOVA EXPLOSIONS ON HELIUM COMPANIONS IN THE CHANDRASEKHAR-MASS EXPLOSION SCENARIO
	Liu ZW(柳正伟)1,2,3,4 ; Pakmor, R 5; Seitenzahl, IR 4,6; Hillebrandt, W 4; Kromer, M 4; Ropke, FK 6; Edelmann, P 4; Taubenberger, S 4; Maeda, K 7; Wang B(王博)1,2
刊名	ASTROPHYSICAL JOURNAL
	2013-09-01
卷号	774 期号:1 页码:1-14
关键词	binaries: close methods: numerical supernovae: general
ISSN号	0004-637X
通讯作者	Liu, ZW (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	In the version of the single-degenerate scenario of Type Ia supernovae (SNe Ia) studied here, a carbon-oxygen white dwarf explodes close to the Chandrasekhar limit after accreting material from a non-degenerate helium (He) companion star. In the present study, we employ the STELLAR GADGET code to perform three-dimensional hydrodynamical simulations of the interaction of the SN Ia ejecta with the He companion star taking into account its orbital motion and spin. It is found that only 2%-5% of the initial companion mass is stripped off from the outer layers of He companion stars due to the supernova (SN) impact. The dependence of the unbound mass (or the kick velocity) on the orbital separation can be fitted to a good approximation by a power law for a given companion model. After the SN impact, the outer layers of a He donor star are significantly enriched with heavy elements from the low-expansion-velocity tail of SN Ia ejecta. The total mass of accumulated SN-ejecta material on the companion surface reaches about greater than or similar to 10(-3)M(circle dot) for different companion models. This enrichment with heavy elements provides a potential way to observationally identify the surviving companion star in SN remnants. Finally, by artificially adjusting the explosion energy of the W7 explosion model, we find that the total accumulation of SN ejecta on the companion surface is also dependent on the explosion energy with a power-law relation to a good approximation.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	SINGLE-DEGENERATE SCENARIO ; DELAYED-DETONATION MODEL ; WHITE-DWARF MODELS ; STAR DONOR CHANNEL ; SN 2011FE ; CIRCUMSTELLAR MATERIAL ; BINARY COMPANIONS ; TIME DISTRIBUTION ; NEBULAR SPECTRA ; VIOLENT MERGERS
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/0004-637X/774/1/37/meta
语种	英语
WOS记录号	WOS:000323426700037
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4549]
专题	云南天文台_大样本恒星演化研究组云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 3.University of Chinese Academy of Sciences, Beijing 100049, China 4.Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85741 Garching, Germany 5.Heidelberger Institut für Theoretische Studien, Schloss-Wolfsbrunnenweg 35, D-69118 Heidelberg, Germany 6.Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany 7.Kavli Institute for the Physics and Mathematics of the Universe (Kavli-IPMU), Todai Institutes for Advanced Study (TODIAS), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan
推荐引用方式 GB/T 7714	Liu ZW,Pakmor, R,Seitenzahl, IR,et al. THE IMPACT OF TYPE Ia SUPERNOVA EXPLOSIONS ON HELIUM COMPANIONS IN THE CHANDRASEKHAR-MASS EXPLOSION SCENARIO[J]. ASTROPHYSICAL JOURNAL,2013,774(1):1-14.
APA	Liu ZW.,Pakmor, R.,Seitenzahl, IR.,Hillebrandt, W.,Kromer, M.,...&Han ZW.(2013).THE IMPACT OF TYPE Ia SUPERNOVA EXPLOSIONS ON HELIUM COMPANIONS IN THE CHANDRASEKHAR-MASS EXPLOSION SCENARIO.ASTROPHYSICAL JOURNAL,774(1),1-14.
MLA	Liu ZW,et al."THE IMPACT OF TYPE Ia SUPERNOVA EXPLOSIONS ON HELIUM COMPANIONS IN THE CHANDRASEKHAR-MASS EXPLOSION SCENARIO".ASTROPHYSICAL JOURNAL 774.1(2013):1-14.