Spectroscopy of Quasar Candidates from SDSS Commissioning Data
Astrophysics
2019-08-14 v1
Abstract
The Sloan Digital Sky Survey has obtained images in five broad-band colors for several hundred square degrees. We present color-color diagrams for stellar objects, and demonstrate that quasars are easily distinguished from stars by their distinctive colors. Follow-up spectroscopy in less than ten nights of telescope time has yielded 22 new quasars, 9 of them at , and one with , the second highest-redshift quasar yet known. Roughly 80% of the high-redshift quasar candidates selected by color indeed turn out to be high-redshift quasars.
Cite
@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}
}
Comments
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