来自 SDSS commissioning 数据的类星体候选对象的光谱学
天体物理学
2019-08-14 v1
摘要
Sloan Digital Sky Survey 对多个百平方度的区域进行了五个宽带颜色的成像。我们绘制了恒星天体的颜色-颜色图，并展示了类星体与恒星通过其独特的颜色进行区分的显著性。跟随 spectroscopy 在不到十个夜晚的望远镜时间内，我们发现了 22 个新的类星体，其中 9 个的红移大于 3.65，一个红移为 4.75，是目前已知的第二高红移类星体。大约 80% 的通过颜色选取的高红移类星体候选对象确实显示为高红移类星体。
引用
@article{arxiv.astro-ph/9812280,
title = {Spectroscopy of Quasar Candidates from SDSS Commissioning Data},
author = {Xiaohui Fan and Michael A. Strauss and James Annis and James E. Gunn and Gregory S. Hennessy and Zeljko Ivezic and Gillian R. Knapp and Robert H. Lupton and Jeffrey A. Munn and Heidi J. Newberg and Donald P. Schneider and Brian Yanny},
journal= {arXiv preprint arXiv:astro-ph/9812280},
year = {2019}
}
备注
4 pages, 3 figures, to appear in the proceedings of "After the Dark Ages: When Galaxies were Young (the Universe at 2<z<5)", 9th Annual October Astrophysics Conference in Maryland