The Galaxy Environment of Quasars in the Clowes-Campusano Large Quasar Group at z~1.3
| dc.creator | Haines, C. P. | |
| dc.creator | Clowes, R. G. | |
| dc.creator | Campusano, L. E. | |
| dc.date | 2000-12-11 | |
| dc.date.accessioned | 2026-07-07T01:56:58Z | |
| dc.date.available | 2026-07-07T01:56:58Z | |
| dc.description | The Clowes-Campusano Large Quasar Group (LQG) is the largest known structure at high redshifts, with at least 18 quasars at z~1.3 forming a structure ~200 Mpc across. We are conducting an ultra-deep optical and deep NIR study to examine the galaxy environment of quasars in this LQG to determine if, and how, LQGs trace large-scale structure at early epochs. We report significant associated clustering in the field of a z=1.226 quasar from this LQG in the form of a factor ~11 overdensity of I-K>3.75 galaxies, and red sequences of 15-18 galaxies at I-K~4.3,V-K~6.9, indicative of a population of massive ellipticals at the quasar redshift. The quasar is located between two groups of these galaxies, with further clustering extending over 2-3 Mpc. Within 30 arcsec of the quasar we find a concentration of blue (V-I<1) galaxies in a band that bisects the two groups of red sequence galaxies. This band is presumed to correspond to a region of enhanced star-formation. We suggest that the merging of the two groups of red sequence galaxies has triggered both the quasar and the band of star-formation. Quasars at z~1.3 are located in a variety of environments, but those with associated clustering are found on the cluster peripheries. | |
| dc.description | 6 pages, 3 figures, uses newpasp.sty. To appear in the proceedings of "The New Era of Wide-Field Astronomy", Preston, UK, August 2000. A version of the poster also presented at this conference is available at http://www.star.uclan.ac.uk/~cph/poster.html | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0012236 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0012236 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/2205 | |
| dc.subject | Astrophysics | |
| dc.title | The Galaxy Environment of Quasars in the Clowes-Campusano Large Quasar Group at z~1.3 | |
| dc.type | text |