2009AJ....137.3533H

Query : 2009AJ....137.3533H

2009AJ....137.3533H - Astron. J., 137, 3533-3540 (2009/March-0)

Environments of QSOs at redshift 0.9-1.3.

HUTCHINGS J.B., SCHOLZ P. and BIANCHI L.

Abstract (from CDS):

We analyze new deep g- and i-band imaging of 16 QSOs in the redshift range 0.9-1.3 with the Canada-France-Hawaii Telescope. The principal points of interest are the symmetry and signs of tidal effects in the QSO hosts and nearby (companion) galaxies. The sample measures are compared with similar measures on randomly selected field galaxy samples. Asymmetry measures are made for all objects to g ∼ 22, and magnitudes of all galaxies 2 mag fainter. The QSOs are found in denser environments than the field, and are somewhat offset from the centroid of their surrounding galaxies. The QSO hosts appear more disturbed than other galaxies. While the QSO companions and field galaxies have the same average asymmetry, the distribution of asymmetry values is different. QSO companions within 15'' are fainter than average field galaxies. We discuss scenarios that are consistent with these and other measured quantities.

Abstract Copyright: ∼

Journal keyword(s): galaxies: evolution - galaxies: interactions - quasars: general

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [VV2006] J003258.9+154958 QSO 00 32 58.9066057272 +15 49 59.037562560   20.23 19.87     ~ 23 0
2 [VV2006] J003349.9+154613 QSO 00 33 49.8655915272 +15 46 13.288179864   19.0 20.37 19.3   ~ 23 0
3 [VV2006] J003633.7+143546 QSO 00 36 33.6953724720 +14 35 46.340261376   18.1 19.44 18.6   ~ 23 0
4 [VV2006] J004158.9+145446 QSO 00 41 58.8830281008 +14 54 46.444427172   18.9 19.74 18.9   ~ 23 0
5 [VV2006] J004441.0+153850 QSO 00 44 40.9590003984 +15 38 50.569776996   17.8 19.38 18.6   ~ 25 0
6 [VV2006] J004545.9+155024 QSO 00 45 45.9264020448 +15 50 24.435329640   18.5 19.50 18.5   ~ 24 0
7 [VV2006] J004613.7+153837 QSO 00 46 13.6781786832 +15 38 38.003756388   20.81 21.10     ~ 21 0
8 [VV2006] J004635.7+160130 QSO 00 46 35.7208565784 +16 01 30.475227864   17.8 18.99 18.4   ~ 24 0
9 QSO B0052+145 QSO 00 54 44.0606405952 +14 46 46.508175660   18.31 18.08     ~ 36 0
10 [VV2006] J011744.1+145010 QSO 01 17 44.0556891744 +14 50 10.821061896   20.03 19.62     ~ 22 0
11 [VV2006] J012246.3+143202 QSO 01 22 46.2829104384 +14 32 02.980220424   20.74 20.48     ~ 18 0
12 [VV2006] J012254.5+145101 QSO 01 22 54.4932908904 +14 51 02.137499244   17.3 18.73 17.5   ~ 24 0
13 [VV2006] J012306.2+153910 QSO 01 23 06.2246932848 +15 39 10.379028600   20.41 19.97     ~ 21 0
14 [VV2006] J012443.9+132641 QSO 01 24 43.8647857200 +13 26 42.195062688   18.3 18.75 18.5   ~ 23 0
15 [VV2006] J014726.6+142150 QSO 01 47 26.6257987080 +14 21 50.509461816   18.61 18.35     ~ 24 0

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