A Serendipitous Deep Cluster Survey from ROSAT--PSPC pointed observations
| dc.creator | Rosati, P. | |
| dc.date | 1995-09-09 | |
| dc.date.accessioned | 2026-07-07T02:20:10Z | |
| dc.date.available | 2026-07-07T02:20:10Z | |
| dc.description | We present a deep X-ray selected sample of galaxy clusters which has been created from a serendipitous search in ROSAT-PSPC deep pointed observations at high galactic latitude. This survey, hereafter known as the ROSAT Deep Cluster Survey (RDCS), is being carried out utilizing a wavelet-based detection algorithm which, unlike other detection methods, is not biased against extended, low surface brightness sources. It is a flux-diameter limited sample that extends the X-ray flux limit of previous cluster surveys by more than one order of magnitude ($F_X \ge 1\cdot 10^{-14}\rm erg\, cm^{-2}s^{-1}$). The first results of the on-going optical follow-up program indicate a high success rate of identification. At the present, 38 clusters out of 80 candidates have been identified on a 26 deg$^2$ surveyed area. Recently measured redshifts confirm the nature of these systems as low-moderate redshift groups ($z\simeq 0.2-0.3$) and intermediate to high redshift clusters ($z\simeq 0.4-0.7$). We show X-ray and optical images of several clusters identified to date, discuss the X-ray properties of the sample and present preliminary results on the redshift distribution. The final sample will include $\sim 100$ clusters covering and area of $\sim 40$ deg$^2$. | |
| dc.description | 6 pages with figures (plate not included), uuencoded compressed postscript - to appear in Astrophysical Letters and Communication - proceedings of the Workshop on "Observational Cosmology: from Galaxies to Galaxy Systems" (Sesto - Italy, 4-7 July 1995) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9509056 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9509056 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/10125 | |
| dc.subject | Astrophysics | |
| dc.title | A Serendipitous Deep Cluster Survey from ROSAT--PSPC pointed observations | |
| dc.type | text |