The ROSAT-ESO Flux Limited X-Ray (REFLEX) Galaxy Cluster Survey I: The Construction of the Cluster Sample

Details The ROSAT-ESO Flux Limited X-Ray (REFLEX) Galaxy Cluster Survey I: The Construction of the Cluster Sample The ROSAT-ESO Flux Limited X-Ray (REFLEX) Galaxy Cluster Survey I: The Construction of the Cluster Sample

2000-12-12

arxiv.org/abs/astro-ph/0012266v1

Astronomy and Astrophysics

Astrophysics

24 pages, 31 figures, submitted to Astronomy and Astrophysics

Scientific paper

10.1051/0004-6361:20010240

We describe the construction of an X-ray flux-limited sample of galaxy clusters, the REFLEX survey catalogue, to be used for cosmological studies. The survey is based on the ROSAT All-Sky Survey and on extensive follow-up observations conducted in the frame of an ESO key program. In the paper we document the process by which the primary cluster candidate catalogue is constructed prior to the optical follow-up observations. We describe the reanalysis of the RASS source catalogue which enables us to impose a proper flux limit cut to the X-ray source list without introducing a severe bias against extended sources. We discuss the correlation of the X-ray and optical (COSMOS) data to find galaxy density enhancements at the RASS X-ray source positions and the further evaluation of the nature of these cluster candidates. Based also on the results of the follow-up observations we provide a statistical analysis of the completeness and contamination of the final cluster sample and show results on the cluster number counts. The final sample of identified X-ray clusters reaches a flux limit of 3e-12 erg s-1 cm-2 in the 0.1 - 2.4 keV band and comprises 452 clusters. The results imply a completeness of the REFLEX cluster sample well in excess of 90% and a contamination by non-cluster X-ray sources of less than 9%, an accuracy sufficient for the use of this cluster sample for cosmological tests.

Affiliated with

Also associated with

No associations

Rating

The ROSAT-ESO Flux Limited X-Ray (REFLEX) Galaxy Cluster Survey I: The Construction of the Cluster Sample does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The ROSAT-ESO Flux Limited X-Ray (REFLEX) Galaxy Cluster Survey I: The Construction of the Cluster Sample, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The ROSAT-ESO Flux Limited X-Ray (REFLEX) Galaxy Cluster Survey I: The Construction of the Cluster Sample will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-257459