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The Galaxy Environment of Quasars in the z ⋍ 1.3 Clowes-Campusano Large Quasar Group
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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.
Cambridge University Press (CUP)
Title: The Galaxy Environment of Quasars in the z ⋍ 1.3 Clowes-Campusano Large Quasar Group
Description:
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.
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