pith. sign in

arxiv: astro-ph/9506145 · v1 · submitted 1995-06-30 · 🌌 astro-ph

Discovery of a Large Gravitational Arc in the X-ray Cluster A2280

I. M. Gioia , J. P. Henry , G. A. Luppino , D. I. Clowe , H. Boehringer , U. G. Briel , W. Voges , J.P. Huchra
show 13 more authors
H. MacGillivray (Institute for Astronomy University of Hawaii USA; Istituto di Radioastronomia del CNR Bologna Italy; Max-Planck-Institut fuer Extraterrestrische Physik Garching bei Muenchen Federal Republic of Germany Harvard--Smithsonian Center for Astrophysics Cambridge MA 02138 USA; Royal Observatory Edinburgh Edinburgh United Kingdom)
This is my paper
classification 🌌 astro-ph
keywords clusterx-raydetecteddiscoverylargerosatspectroscopica2280
0
0 comments X
read the original abstract

This Letter presents the serendipitous discovery of a large arc in an X-ray selected cluster detected in the Rosat North Ecliptic Pole (NEP) survey. The cluster, associated with Abell 2280, is identified as the optical counterpart of the X-ray source RXJ 1743.5+6341. This object is a medium--distant z=0.326 and luminous (L_(0.5-2 kev) = 5.06x10**44 erg/s) cluster dominated by a central bright galaxy. The arc is located ~ 14 arcsec to the North-West of the cD and it is detected in the R and I bands but not in the B band. Photometric and spectroscopic observations of the cluster and of the arc are presented. Other similar discoveries in the course of imaging and spectroscopic surveys of Rosat are expected in the future.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.