高红移阻尼赫氏-氢吸收系统 responsible 行星的鉴别
天体物理学
2009-10-28 v1
摘要
认为负责高红移类星体光谱中阻尼赫氏-氢吸收 (DLA) 系统的星系，是正常盘状星系的可行天体群体。它们似乎包含了今天已知正常星系中相当比例的质子。我们在报告检测到一个对象，编号为 DLA 2233+131，负责已知 DLA 系统 z(abs)=3.150 的光谱，该系统来自类星体 2233+131 [z(QSO)=3.295]。这是首次明确检测到 DLA 星系，在发射线和恒星连续光谱中均检测到。其性质与可能来自早期形成的年轻盘状星系相吻合，且没有活跃星核的迹象。这为 DLA 系统代表银河系中高红移年轻星系的观念提供了有力支持。
引用
@article{arxiv.astro-ph/9605154,
title = {Identification of a Galaxy Responsible for a High-Redshift Damped Ly-alpha Absorption System},
author = {S. G. Djorgovski and M. A. Pahre and J. Bechtold and R. Elston},
journal= {arXiv preprint arXiv:astro-ph/9605154},
year = {2009}
}
备注
to appear in Nature; self-contained TeX (6 pages) with three postscript figures; figure 3 has been B/W dithered to reduce size; entire paper, including full-resolution figures, also available from ftp://astro.caltech.edu/users/map/dla2233/ or http://astro.caltech.edu/~map/map.bibliography.html