NAOC Open IR  > 空间科学研究部
Characteristic velocities of stripped-envelope core-collapse supernova cores star
Maurer, J. I.1; Mazzali, P. A.1,2,3; Deng, J.4; Filippenko, A. V.5; Hamuy, M.6; Kirshner, R. P.7; Matheson, T.8; Modjaz, M.5; Pian, E.9,10; Stritzinger, M.11,12; Taubenberger, S.1; Valenti, S.10
2010-02-11
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume402Issue:1Pages:161-172
AbstractThe velocity of the inner ejecta of stripped-envelope core-collapse supernovae (CC-SNe) is studied by means of an analysis of their nebular spectra. Stripped-envelope CC-SNe are the result of the explosion of bare cores of massive stars (>= 8 M(circle dot)), and their late-time spectra are typically dominated by a strong [O i] lambda lambda 6300, 6363 emission line produced by the innermost, slow-moving ejecta which are not visible at earlier times as they are located below the photosphere. A characteristic velocity of the inner ejecta is obtained for a sample of 56 stripped-envelope CC-SNe of different spectral types (IIb, Ib, Ic) using direct measurements of the linewidth as well as spectral fitting. For most SNe, this value shows a small scatter around 4500 km s-1. Observations (< 100 d) of stripped-envelope CC-SNe have revealed a subclass of very energetic SNe, termed broad-lined SNe (BL-SNe) or hypernovae, which are characterized by broad absorption lines in the early-time spectra, indicative of outer ejecta moving at very high velocity (v >= 0.1c). SNe identified as BL in the early phase show large variations of core velocities at late phases, with some having much higher and some having similar velocities with respect to regular CC-SNe. This might indicate asphericity of the inner ejecta of BL-SNe, a possibility we investigate using synthetic three-dimensional nebular spectra.
KeywordLine: Profiles Radiative Transfer Supernovae: General
DOI10.1111/j.1365-2966.2009.15905.x
Indexed BySCI
Language英语
WOS IDWOS:000274453500014
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7698
Collection空间科学研究部
Affiliation1.Max Planck Inst Astrophys, D-85741 Garching, Germany
2.Scuola Normale Super Pisa, I-56126 Pisa, Italy
3.Natl Inst Astrophys OAPd, I-35122 Padua, Italy
4.CAS, Natl Astron Observ, Beijing 1000012, Peoples R China
5.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
6.Univ Chile, Dept Astron, Santiago, Chile
7.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
8.Natl Opt Astron Observ, Tucson, AZ 85719 USA
9.Trieste Astron Observ, INAF, I-34143 Trieste, Italy
10.European So Observ, D-85748 Garching, Germany
11.Carnegie Observ, Las Campanas Observ, La Serena, Chile
12.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen O, Denmark
Recommended Citation
GB/T 7714
Maurer, J. I.,Mazzali, P. A.,Deng, J.,et al. Characteristic velocities of stripped-envelope core-collapse supernova cores star[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,402(1):161-172.
APA Maurer, J. I..,Mazzali, P. A..,Deng, J..,Filippenko, A. V..,Hamuy, M..,...&Valenti, S..(2010).Characteristic velocities of stripped-envelope core-collapse supernova cores star.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,402(1),161-172.
MLA Maurer, J. I.,et al."Characteristic velocities of stripped-envelope core-collapse supernova cores star".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 402.1(2010):161-172.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Maurer, J. I.]'s Articles
[Mazzali, P. A.]'s Articles
[Deng, J.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Maurer, J. I.]'s Articles
[Mazzali, P. A.]'s Articles
[Deng, J.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Maurer, J. I.]'s Articles
[Mazzali, P. A.]'s Articles
[Deng, J.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.