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The Galaxy Environment of Quasars in the z ⋍ 1.3 Clowes-Campusano Large Quasar Group

Published online by Cambridge University Press:  26 May 2016

C. P. Haines ,
R. G. Clowes  and
L. E. Campusano
C. P. Haines
Affiliation:
Centre for Astrophysics, University of Central Lancashire, Preston, PR1 2HE, UK
R. G. Clowes
Affiliation:
Centre for Astrophysics, University of Central Lancashire, Preston, PR1 2HE, UK
L. E. Campusano
Affiliation:
Observatorio Astrónomico Cerro Calán, Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile

Abstract

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We report significant associated clustering in the field of a z = 1.226 quasar from the Clowes-Campusano LQG in the form of both 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. A band of V - I < 1 galaxies bisects the two groups of red sequence galaxies, and we suggest that the merging of these two groups has triggered both this band of star-formation and the quasar.

Type
Part XII: Poster Papers
Information
Symposium - International Astronomical Union , Volume 201: New Cosmological Data and the Values of the Fundamental Parameters , 2005 , pp. 465 - 466
Copyright
Copyright © Astronomical Society of the Pacific 2005 

References

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