Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-11-06
Astronomy and Astrophysics
Astrophysics
9 pages, Latex, 7 figures, MNRAS accepted for publication
Scientific paper
We are looking at quasar environment in the context of large-scale structure (LSS) - a new approach, giving a more informed interpretation of quasar-galaxy correlations. This paper presents our first results for a sample of z ~ 0.3 quasars. We are using Voronoi tessellation applied in colour (B_J - R) slices for the detection of galaxy clusters and the minimal spanning tree (MST) to delineate the large-scale structure. This new cluster-detection method allows us to find reliably galaxy clusters at z < 0.3 from SuperCOSMOS measurements of UK Schmidt plates. By reconstructing the large-scale structure in a relatively narrow redshift band (0.2 < z < 0.3), we show that quasars follow the large-scale structure traced by galaxy clusters. None of the quasars in our radio-quiet sample is located in the central area of a galaxy cluster. Two quasars, found in a very rich environment, are actually located between two very close galaxy clusters, consistent with results on z ~ 1 quasars suggesting that cluster merg ers may be involved in one of the quasar formation mechanisms.
Campusano Luis E.
Clowes Roger G.
Söchting Ilona K.
No associations
LandOfFree
Environments of Quasars in the Context of Large-Scale Structure 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 Environments of Quasars in the Context of Large-Scale Structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Environments of Quasars in the Context of Large-Scale Structure will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-433542