The exceptionally bright type Ib supernova 1991D

被引：22

作者：

Benetti, S

Branch, D

Turatto, M

Cappellaro, E

Baron, E

Zampieri, L

Della Valle, M

Pastorello, A

机构：

[1] Osserv Astron Padova, INAF, I-35122 Padua, Italy

[2] Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA

[3] Osserv Astron Capodimonte, INAF, I-80131 Naples, Italy

[4] Osserv Astrofis Arcetri, INAF, I-50125 Florence, Italy

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2002年 / 336卷 / 01期

基金：

美国国家科学基金会;

关键词：

supernovae : general; supernovae : individual : 1991D;

D O I：

10.1046/j.1365-8711.2002.05706.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Photometric and spectroscopic observations of the peculiar Type Ib supernova 1991D are presented. SN 1991D was exceptionally bright for a Type Ib supernova. The He I lines were rather weak and the velocity at the photosphere as a function of time was unusually low. Comparison of the observed and synthetic spectra indicates that either hydrogen was ejected with a minimum velocity of 12 000 km s(-1) or the spectrum contained features caused by lines of Ne </x>i<x>. Light curve modelling suggests that the progenitor probably had a very large radius (similar to10(14) cm) and that a considerable amount of Ni-56 was synthesized during the explosion (similar to0.7 M.). We suggest a progenitor model of SN 1991D that involves a binary system.

引用

页码：91 / 96

页数：6

共 24 条

[1] Preliminary spectral analysis of the Type II supernova 1999em [J].

Baron, E ;

Branch, D ;

Hauschildt, PH ;

Filippenko, AV ;

Kirshner, RP ;

Challis, PM ;

Jha, S ;

Chevalier, R ;

Fransson, C ;

Lundqvist, P ;

Garnavich, P ;

Leibundgut, B ;

McCray, R ;

Michael, E ;

Panagia, N ;

Phillips, MM ;

Pun, CSJ ;

Schmidt, B ;

Sonneborn, G ;

Suntzeff, NB ;

Wang, L ;

Wheeler, JC .

ASTROPHYSICAL JOURNAL, 2000, 545 (01) :444-448

[2] Direct analysis of spectra of Type Ib supernovae [J].

Branch, D ;

Benetti, S ;

Kasen, D ;

Baron, E ;

Jeffery, DJ ;

Hatano, K ;

Stathakis, RA ;

Filippenko, AV ;

Matheson, T ;

Pastorello, A ;

Altavilla, G ;

Cappellaro, E ;

Rizzi, L ;

Turatto, M ;

Li, WD ;

Leonard, DC ;

Shields, JC .

ASTROPHYSICAL JOURNAL, 2002, 566 (02) :1005-1017

[3] The luminous Type Ic supernova 1992ar at z=0.145 [J].

Clocchiatti, A ;

Phillips, MM ;

Suntzeff, NB ;

DellaValle, M ;

Cappellaro, E ;

Turatto, M ;

Hamuy, M ;

Avilés, R ;

Navarrete, M ;

Smith, C ;

Rubenstein, EP ;

Covarrubias, R ;

Stetson, PB ;

Maza, J ;

Riess, AG ;

Zanin, C .

ASTROPHYSICAL JOURNAL, 2000, 529 (02) :661-674

[4]

FILIPPENKO AV, 1991, 5200 IAUC

[5]

HABETS GMHJ, 1986, ASTRON ASTROPHYS, V167, P61

[6] A new evolutionary path to type Ia supernovae: A helium-rich supersoft X-ray source channel [J].

Hachisu, I ;

Kato, M ;

Nomoto, K ;

Umeda, H .

ASTROPHYSICAL JOURNAL, 1999, 519 (01) :314-323

[7] Ion signatures in supernova spectra [J].

Hatano, K ;

Branch, D ;

Fisher, A ;

Millard, J ;

Baron, E .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1999, 121 (01) :233-246

[8] PROBING THE INTERSTELLAR-MEDIUM ALONG THE LINES OF SIGHT TO SUPERNOVAE SN 1994D AND SN 1994I [J].

HO, LC ;

FILIPPENKO, AV .

ASTROPHYSICAL JOURNAL, 1995, 444 (01) :165-174

[9] HELIUM-ACCRETING DEGENERATE DWARFS AS PRESUPERNOVAE AND SCENARIOS FOR THE ULTRASOFT X-RAY SOURCES [J].

IBEN, I ;

TUTUKOV, AV .

ASTROPHYSICAL JOURNAL, 1994, 431 (01) :264-272

[10]

Iwamoto K., 1994, ApJ, V437, P115

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