GRB031203宿主星系的光谱学研究
天体物理学
2007-05-23 v1
摘要
我们使用VLT获得的一组光谱数据重新审视GRB031203的宿主星系。假设在暴所在方向的Galactic色差E(B-V)=0.72(mag),我们推导出约0.4(mag)的内部衰减。经过校正红色化后,我们发现电子密度为156 cm⁻³,温度为12443 K。以ISM以光子加 ionization为主, 我们估计金属丰度为12+Log[O/H]=8.12,星际介质中恒星形成率为12.3 M_{o}yr⁻¹。这颗星系不宿主明显可检测的WR星群。
引用
@article{arxiv.astro-ph/0702225,
title = {Spectroscopical Study of the Host Galaxy of GRB031203},
author = {R. Margutti and G. Chincarini and D. Fugazza},
journal= {arXiv preprint arXiv:astro-ph/0702225},
year = {2007}
}
备注
2 pages; 2 figures; Proceeding of the "Swift and GRBs: Unveiling the Relativistic Universe" meeting,Venice, June 5-9,2006, to be published by "Il Nuovo Cimento"