Three-dimensional simulations of the interaction between Type Ia supernova ejecta and their main sequence companions

	Three-dimensional simulations of the interaction between Type Ia supernova ejecta and their main sequence companions
	Liu ZW(柳正伟)1,2,3,4 ; Pakmor, R 4,5; Ropke, FK 4,6; Edelmann, P 4; Wang B(王博)1,2 ; Kromer, M 4; Hillebrandt, W 4; Han ZW(韩占文)1,2
刊名	ASTRONOMY & ASTROPHYSICS
	2012-12
卷号	548 页码:1-13
关键词	supernovae: general hydrodynamics binaries: close
ISSN号	0004-6361
通讯作者	Liu, ZW (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	Context. The identity of the progenitor systems of Type Ia supernovae (SNe Ia) is still uncertain. In the single-degenerate scenario, the interaction between the supernova blast wave and the outer layers of a main sequence companion star strips off hydrogen-rich material which is then mixed into the ejecta. Strong contamination of the supernova ejecta with stripped material could lead to a conflict with observations of SNe Ia. This constrains the single-degenerate progenitor model. Aims. In this work, our previous simulations based on simplified progenitor donor stars have been updated by adopting more realistic progenitor-system models that result from fully detailed, state-of-the-art binary evolution calculations. Methods. We use Eggleton's stellar evolution code including the optically thick accretion wind model and taking into account the possibility of the effects of accretion disk instabilities to obtain realistic models of companion stars for different progenitor systems. The impact of the supernova blast wave on these companion stars is followed in three-dimensional hydrodynamic simulations employing the smoothed particle hydrodynamics code GADGET3. Results. For a suite of main sequence companions, we find that the mass of the material stripped from the companions range from 0.11 M-circle dot to 0.18 M-circle dot. The kick velocity delivered by the impact is between 51 km s(-1) and 105 km s(-1). We find that the stripped mass and kick velocity depend on the ratio of the orbital separation to the radius of a companion, a(f)/R. They can be fitted in good approximation by a power law for a given companion model. However, we do not find a single power law relation holding for different companion models. This implies that the structure of the companion star is also important for the amount of stripped material. Conclusions. With more realistic companion star models than those employed in previous studies, our simulations show that the hydrogen masses stripped from companions are inconsistent with the best observational limits (<= 0.01 M-circle dot) derived from SN Ia nebular spectra. However, a rigorous forward modeling from the results of impact simulations with radiation transfer is required to reliably predict observable signatures of the stripped hydrogen and to conclusively assess the viability of the considered SN Ia progenitor scenario.
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]	DELAY-TIME DISTRIBUTION ; WHITE-DWARF BINARIES ; STELLAR EVOLUTION ; CIRCUMSTELLAR MATERIAL ; PROGENITOR MODEL ; CLOSE BINARIES ; SPY PROJECT ; IMPACT ; STAR ; SYSTEMS
收录类别	SCI ; EI
原文出处	http://www.aanda.org/articles/aa/abs/2012/12/aa19357-12/aa19357-12.html
语种	英语
WOS记录号	WOS:000311901200002
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4519]
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.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, 650011 Kunming, PR China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, PR China 3.University of Chinese Academy of Sciences, 100049 Beijing, PR China 4.Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85741 Garching, Germany 5.Heidelberger Institut für Theoretische Studien, Schloss-Wolfsbrunnenweg 35, 69118 Heidelberg, Germany 6.Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Emil-Fischer-Str. 31, 97074 Würzburg, Germany
推荐引用方式 GB/T 7714	Liu ZW,Pakmor, R,Ropke, FK,et al. Three-dimensional simulations of the interaction between Type Ia supernova ejecta and their main sequence companions[J]. ASTRONOMY & ASTROPHYSICS,2012,548:1-13.
APA	Liu ZW.,Pakmor, R.,Ropke, FK.,Edelmann, P.,Wang B.,...&Han ZW.(2012).Three-dimensional simulations of the interaction between Type Ia supernova ejecta and their main sequence companions.ASTRONOMY & ASTROPHYSICS,548,1-13.
MLA	Liu ZW,et al."Three-dimensional simulations of the interaction between Type Ia supernova ejecta and their main sequence companions".ASTRONOMY & ASTROPHYSICS 548(2012):1-13.