ON THE PROGENITORS OF TYPE-IA SUPERNOVAE IN EARLY-TYPE AND LATE-TYPE GALAXIES

被引：67
|
作者：
DELLAVALLE, M
LIVIO, M
机构：
[1] UNIV PADUA,DIPARTIMENTO ASTRON,I-35100 PADUA,ITALY
[2] SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218
[3] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,HAIFA,ISRAEL
来源：
ASTROPHYSICAL JOURNAL | 1994年 / 423卷 / 01期
关键词：
GALAXIES; ELLIPTIC AND LENTICULAR; CD; SPIRAL; NOVA; CATACLYSMIC VARIABLES; SUPERNOVAE; GENERAL;
D O I：
10.1086/187228
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
An examination of recent observational material reveals substantial differences between supernovae of Type Ia (SNs Ia) in galaxies of different Hubble types. We propose that SNs la in late- and early-type galaxies may have different progenitors. A further examination of novae in galaxies of different Hubble types suggests the possibility that SNs Ia in late-type galaxies may be related to cataclysmic variable-type systems, while SNs Ia in early-type galaxies may be related to mechanisms involving an older population. About 50%-70% of the SNs Ia events in spirals observed at the La Silla and Tololo Observatories in the past 4 years appear to be located in the arms of the parent galaxy.
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页码：L31 / L33
页数：3
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