Daskin 2008 用超新星和伽玛暴的空间分布来限制他们的前身星质量

主要内容:
是在星系里的空间分布（而不是天球上的方位角）

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Title:		Using Spatial Distributions to Constrain Progenitors of Supernovae and Gamma Ray Bursts
Authors:		Raskin, Cody; Scannapieco, Evan; Rhoads, James; Della Valle, Massimo
Publication:		eprint arXiv:0808.3766
Publication Date:		08/2008
Origin:		ARXIV
Keywords:		Astrophysics
Comment:		18 pages, 19 figures, ApJ, in press
Bibliographic Code:		2008arXiv0808.3766R

Abstract

We carry out a comprehensive theoretical examination of the relationship between the spatial distribution of optical transients and the properties of their progenitor stars. By constructing analytic models of star-forming galaxies and the evolution of stellar populations within them, we are able to place constraints on candidate progenitors for core-collapse supernovae (SNe), long-duration gamma ray bursts, and supernovae Ia. In particular we first construct models of spiral galaxies that reproduce observations of core-collapse SNe, and we use these models to constrain the minimum mass for SNe Ic progenitors to approximately 25 solar masses. Secondly, we lay out the parameters of a dwarf irregular galaxy model, which we use to show that the progenitors of long-duration gamma-ray bursts are likely to have masses above approximately 43 solar masses. Finally, we introduce a new method for constraining the time scale associated with SNe Ia and apply it to our spiral galaxy models to show how observations can better be analyzed to discriminate between the leading progenitor models for these objects.

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