The Northern Sky Optical Cluster Survey II: An Objective Cluster Catalog for 5800 Square Degrees

Details The Northern Sky Optical Cluster Survey II: An Objective Cluster Catalog for 5800 Square Degrees The Northern Sky Optical Cluster Survey II: An Objective Cluster Catalog for 5800 Square Degrees

2003-01-14

arxiv.org/abs/astro-ph/0301274v1

Astronomy and Astrophysics

Astrophysics

49 pages, 16 figures. Accepted to AJ; appearing in April. Version with full resolution figures, and full length tables availab

Scientific paper

10.1086/368240

We present a new, objectively defined catalog of candidate galaxy clusters based on the galaxy catalogs from the Digitized Second Palomar Observatory Sky Survey (DPOSS). This cluster catalog, derived from the best calibrated plates in the high latitude (|b|>30) Northern Galactic Cap region, covers 5,800 square degrees, and contains 8,155 candidate clusters. A simple adaptive kernel density mapping technique, combined with the SExtractor object detection algorithm, is used to detect galaxy overdensities, which we identify as clusters. Simulations of the background galaxy distribution and clusters of varying richnesses and redshifts allow us to optimize detection parameters, and measure the completeness and contamination rates for our catalog. Cluster richnesses and photometric redshifts are measured, using integrated colors and magnitudes for each cluster. An extensive spectroscopic survey is used to confirm the photometric results. This catalog, with well-characterized sample properties, provides a sound basis for future studies of cluster physics and large scale structure.

Affiliated with

Also associated with

No associations

Rating

The Northern Sky Optical Cluster Survey II: An Objective Cluster Catalog for 5800 Square Degrees 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 Northern Sky Optical Cluster Survey II: An Objective Cluster Catalog for 5800 Square Degrees, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Northern Sky Optical Cluster Survey II: An Objective Cluster Catalog for 5800 Square Degrees will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-497288