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A QSO Discovered at the Redshift of the Extended X-Ray Cluster RX J0152.7-1357

Bibcode
2006PASP..118..124B
DOI
10.1086/498357
Burbidge, E. M.; Gutiérrez, C. M.; Arp, H.
Bibliographical reference

The Publications of the Astronomical Society of the Pacific, Volume 118, Issue 839, pp. 124-128.

Advertised on:
1
2006
Number of authors
3
IAC number of authors
1
Citations
2
Refereed citations
1
Description
The galaxy cluster RX J0152.7-1357 at z=0.8325 is one of the most luminous X-ray clusters known. It is elongated toward the bright, nearby, X-ray active galaxy NGC 720 about 14' away. At the same distance on the other side of that galaxy is an X-ray blue stellar object with a flux of 5.8 counts ks-1 in the ROSAT PSPC detector. An intermediate-resolution optical spectrum of this blue stellar object taken with the Keck I telescope has resulted in the unambiguous identification of this source with a QSO at redshift z=0.8312, the same redshift as the galaxy cluster. We discuss the implications of this discovery in the framework of the standard model for large-scale structure formation.
Type
Refereed
Galaxies
Quasars

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