Citation
Xb. Wu et N. Bade, Discovery of six high-redshift radio-quiet, X-ray luminous quasars, CHIN ASTR A, 23(1), 1999, pp. 1-5
Citations number
7
Categorie Soggetti
Space Sciences
Journal title
CHINESE ASTRONOMY AND ASTROPHYSICS
ISSN journal
02751062
→ ACNP
Volume
23
Issue
1
Year of publication
1999
Pages
1 - 5
Database
ISI
SICI code
0275-1062(199901/03)23:1<1:DOSHRX>2.0.ZU;2-1
Abstract
We report the discovery of 6 radio-quiet, X-ray luminous quasars with redsh
ifts larger than 1.3. 3 of them have redshifts larger than 2. They were sel
ected from Hamburg objective prism plates and identified by optical spectro
scopic observations with the 2.16-m telescope of Beijing Astronomical Obser
vatory. This discovery substantially increases the number of high-redshift
radio-quiet, X-ray luminous quasars detected in the ROSAT All Sky Survey.