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The birth rate of supernovae from double-degenerate and core-degenerate systems
Meng, X.1,2; Yang, W.1,3
Source PublicationASTRONOMY & ASTROPHYSICS
2012-07
Volume543
DOI10.1051/0004-6361/201218810
Indexed BySCI ; EI
KeywordWhite Dwarfs Supernovae: General Binaries: General Stars: Evolution
Abstract

Context. Some recent observations of the delay-time distribution (DTD) of Type Ia supernovae (SNe Ia) seem to uphold the double-degenerate (DD) scenario as the progenitor model of SNe Ia, but the core-degenerate (CD) scenario remains a strong competitor to the DD one. 

Aims. We investigate the effects of metallicity and the different treatments of common envelope (CE) on the DTD of SNe Ia by considering the DD and CD scenarios, and check the suggestion that the total mass of DD system is the main dependent variable of Phillips relation. 

Methods. We perform a series of Monte Carlo simulations based on a rapid binary evolution code and consider two treatments of CE evolution, i.e. alpha-formalism and gamma-algorithm. 

Results. We find that only when the alpha-formalism is considered with a high CE ejection efficiency, may the shape of the DTD for DD systems be consistent with that derived observationally, i.e. a power law of similar to t(-1), while the value of the birth rate of SNe Ia marginally matches observations. For the alpha-formalism with a low CE ejection efficiency and the gamma-algorithm, neither the shape of the DTD nor the value of the birth rate can be compared with those of the observations. Metallicity may not have a significant influence on the shape of DTD, but a lower metallicity may lead to a slightly higher birth rate of SNe Ia by a factor of 2, especially for SNe Ia with long delay times. If the results for the single-degenerate (SD) channel are incorporated into those for the DTD, both the shape of DTD and its value may be closely consistent with observations for SNe Ia younger than 2.5 Gyr, and SD and DD channels provide comparable contributions to the total SNe Ia, while for SNe Ia with delay times longer than 2.5 Gyr, DD is the dominant channel and the birth rate is lower than that derived from observations by a factor up to about four. In addition, we calculate the evolutions of various integral parameters of DD systems, and do not find any one suitable to explain the correlation between the brightness of SNe Ia and its delay time. Moreover, there are three channels producing CD systems that may contribute a few SNe Ia, but the contribution of CD systems to the total SNe Ia is no more than 1%. 

Conclusions. There may be other channels or mechanisms contributing to SNe Ia with long delay times.

Funding ProjectNatural Science Foundation of China[11003003] ; Ministry of Education[211102] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
Funding OrganizationNatural Science Foundation of China[11003003] ; Ministry of Education[211102] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherEDP SCIENCES S A
Publication Place17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN0004-6361
URL查看原文
WOS IDWOS:000306597200137
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDELAY-TIME DISTRIBUTION ; CLOSE BINARY EVOLUTION ; COMMON-ENVELOPE PHASE ; FINAL MASS RELATION ; IA SUPERNOVAE ; WHITE-DWARF ; SNE IA ; ELLIPTIC GALAXIES ; PROGENITOR MODEL ; LIGHT CURVES
EI Accession Number20122915258369
EI KeywordsSupernovae
EI Classification Number657.2Extraterrestrial Physics and Stellar Phenomena - 723.4Artificial Intelligence - 913.1Production Engineering - 922.2Mathematical Statistics
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9431
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorMeng, X.
Affiliation1.School of Physics and Chemistry, Henan Polytechnic University, 454000 Jiaozuo, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, PR China
3.Department of Astronomy, Beijing Normal University, 100875 Beijing, PR China
Recommended Citation
GB/T 7714
Meng, X.,Yang, W.. The birth rate of supernovae from double-degenerate and core-degenerate systems[J]. ASTRONOMY & ASTROPHYSICS,2012,543.
APA Meng, X.,&Yang, W..(2012).The birth rate of supernovae from double-degenerate and core-degenerate systems.ASTRONOMY & ASTROPHYSICS,543.
MLA Meng, X.,et al."The birth rate of supernovae from double-degenerate and core-degenerate systems".ASTRONOMY & ASTROPHYSICS 543(2012).
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