NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-25 T07:17:48 PDT
Help | Comment | NED Home

For refcode 2007AJ....134.1551S:
Retrieve 72 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2007AJ....134.1551S Fossil Groups in the Sloan Digital Sky Survey Walter A. Santos, Claudia Mendes de Oliveira, and Laerte Sodre, Jr. Abstract. A search for fossil groups in the Sloan Digital Sky Survey was performed using virtual observatory tools. A cross-match of the positions of all SDSS luminous red galaxies (with r<19 and measured spectroscopic redshifts) with sources in the ROSAT All-Sky Survey catalog resulted in a list of elliptical galaxies with extended X-ray emission (with a galaxy/ROSAT-source distance of less than 0.5' in all cases). A search for neighbors of the selected elliptical galaxies within a radius of 0.5h^-1^_70_ Mpc was conducted, taking into account the r-band magnitudes and spectroscopic or photometric redshifts of all objects within this area, leading to a sample of 34 candidate fossil groups. Considering this sample, the estimated space density of fossil systems is n=(1.0+/-0.6)x10^-6^ h^3^_50_ Mpc^-3^. Key words: Astronomical Data Bases: Miscellaneous, Galaxies: Clusters: General, Galaxies: Elliptical and Lenticular, cD, X-Rays: Galaxies: Clusters
Retrieve 72 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home