大质量星型超新星作为主要尘埃生产者
天体物理学
2012-08-27 v2
摘要
我们报告了对类型II超新星2003gd（位于NGC 628中）的后期光学和中红外观测。在爆发发生499-678天后观察到中红外超额，表明着冷却尘埃在 ejecta 中形成；同时伴随光学消光度的增加和发射线轮廓的不对称性增大。辐射传递模型显示，最多可在ejecta中形成0.02太阳质量的尘埃， beginning as early as 250 days after outburst. 这些观测表明，超新星ejecta中的尘埃形成可以是高效的，大质量星型超新星可以是宇宙历史时期的主要尘埃生产者。
引用
@article{arxiv.astro-ph/0606132,
title = {Massive-Star Supernovae as Major Dust Factories},
author = {Ben E. K. Sugerman and Barbara Ercolano and M. J. Barlow and A. G. G. M. Tielens and Geoffrey C. Clayton and Albert A. Zijlstra and Margaret Meixner and Angela Speck and Tim M. Gledhill and Nino Panagia and Martin Cohen and Karl D. Gordon and Martin Meyer and Joanna Fabbri and J. E. Bowey and Douglas L. Welch and Michael W. Regan and Robert C. Kennicutt,},
journal= {arXiv preprint arXiv:astro-ph/0606132},
year = {2012}
}
备注
11 pages, 1 figure. Accepted 2006 May 30 for publication in Science; Published in 2006 Jun 8 edition of Science Express; 2nd version fixes minor change in conclusion made in press