Bibcode
Girardi, M.; Aguerri, J. A. L.; De Grandi, S.; D'Onghia, E.; Barrena, R.; Boschin, W.; Méndez-Abreu, J.; Sánchez-Janssen, R.; Zarattini, S.; Biviano, A.; Castro-Rodriguez, N.; Corsini, E. M.; del Burgo, C.; Iglesias-Páramo, J.; Vilchez, J. M.
Bibliographical reference
Astronomy and Astrophysics, Volume 565, id.A115, 12 pp.
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5
2014
Journal
Citations
30
Refereed citations
30
Description
Aims: This study is part of the Fossil group origins (FOGO)
project which aims to carry out a systematic and multiwavelength study
of a large sample of fossil systems. Here we focus on the relation
between the optical luminosity (Lopt) and X-ray luminosity
(LX). Methods: Out of a total sample of 28 candidate
fossil systems, we consider a sample of 12 systems whose fossil
classification has been confirmed by a companion study. They are
compared with the complementary sample of 16 systems whose fossil nature
has not been confirmed and with a subsample of 102 galaxy systems from
the RASS-SDSS galaxy cluster survey. Fossil and normal systems span the
same redshift range 0
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Galaxies in the universe can be located in different environments, some of them are isolated or in low density regions and they are usually called field galaxies. The others can be located in galaxy associations, going from loose groups to clusters or even superclusters of galaxies. One of the foremost challenges of the modern Astrophysics is to
Jairo
Méndez Abreu