Large Quasar Groups as a Tool to Study Galaxy Evolution

Details Large Quasar Groups as a Tool to Study Galaxy Evolution Large Quasar Groups as a Tool to Study Galaxy Evolution

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003rmxac..17..267c&link_type=abstract

Galaxy Evolution: Theory & Observations (Eds. Vladimir Avila-Reese, Claudio Firmani, Carlos S. Frenk & Christine Allen) Revista

Astronomy and Astrophysics

Astronomy

Cosmology: Large Scale Structure, Galaxies: Clusters, Igm: Quasar Absorption Lines, Quasars: Space Distribution

Scientific paper

Quasars have been found to cluster generally on scales <= 10h-1 Mpc. However, quasar clustering has also been observed on larger scales in the form of Large Quasar Groups (LQGs) (see Clowes 2001 and references therein). The LQGs -structures 100-200h-1 Mpc in size, are possibly physical enhancements in the underlying mass density of the Universe, with the member quasars immersed in high-redshift counterparts of local structures such as the "Great Wall" of galaxies. This link between quasars and the large scale structure (LSS) of galaxies is consistent with the current view that the formation of quasars is closely related to the formation of galaxies, and with the recent finding that on the scales of superclusters ( ~ 60h-1 Mpc) low-z radio-quiet (z < 0.3) quasars follow the LSS traced by galaxy clusters.

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