Matheson 2001 84个Ibc超新星的光学光谱

主要内容:
这个文章的数据量比较大.

精彩摘抄:
一些Ib型超新星的谱，括号中是爆发后的大致天数
几个典型的超新星的谱
Ic型超新星的光谱。貌似Ic和Ib的区别之一是Ic主要是发射线，而Ib主要是吸收线

文章信息:

· Electronic Refereed Journal Article (HTML)

· Full Refereed Journal Article (PDF/Postscript)

· arXiv e-print (arXiv:astro-ph/0101119)

· References in the article

· Citations to the Article (64) (Citation History)

· Refereed Citations to the Article

· SIMBAD Objects (80)

· NED Objects (56)

· Also-Read Articles (Reads History)

·

· Translate This Page

Title:		Optical Spectroscopy of Type IB/C Supernovae
Authors:		Matheson, Thomas; Filippenko, Alexei V.; Li, Weidong; Leonard, Douglas C.; Shields, Joseph C.
Publication:		The Astronomical Journal, Volume 121, Issue 3, pp. 1648-1675. (AJ Homepage)
Publication Date:		03/2001
Origin:		UCP
AJ Keywords:		Gamma Rays, Stars: Mass Loss, Stars: Supernovae: General
Abstract Copyright:		(c) 2001: The American Astronomical Society
DOI:		10.1086/319390
Bibliographic Code:		2001AJ....121.1648M

Abstract

We present 84 spectra of Type Ib/c and Type IIb supernovae (SNe), describing the individual SNe in detail. The relative depths of the helium absorption lines in the spectra of the SNe Ib appear to provide a measurement of the temporal evolution of the SN, with He I λ5876 and He I λ7065 growing in strength relative to He I λ6678 over time. Light curves for three of the SNe Ib provide a sequence for correlating the helium line strengths. We find that some SNe Ic show evidence for weak helium absorption, but most do not. Aside from the presence or absence of the helium lines, there are other spectroscopic differences between SNe Ib and SNe Ic. On average, the O I λ7774 line is stronger in SNe Ic than in SNe Ib. In addition, the SNe Ic have distinctly broader emission lines at late times, indicating a consistently larger explosion energy and/or lower envelope mass for SNe Ic than for SNe Ib. While SNe Ib appear to be basically homogeneous, the SNe Ic are quite heterogeneous in their spectroscopic characteristics. Three SNe Ic that may have been associated with gamma-ray bursts are also discussed; two of these have clearly peculiar spectra, while the third seems fairly typical.

---

Bibtex entry for this abstract Preferred format for this abstract (see Preferences)