2008AJ....135.1692H

Query : 2008AJ....135.1692H

2008AJ....135.1692H - Astron. J., 135, 1692-1696 (2008/May-0)

Asymmetry measures for quasi-stellar objects and companions.

HUTCHINGS J.B. and PROULX C.

Abstract (from CDS):

An asymmetry index is derived from ellipse fitting to galaxy images that gives weight to faint outer features and is not strongly redshift dependent. These measures are made on a sample of 13 Two Micron All Sky Survey quasi-stellar objects (QSOs) and their neighbor galaxies, and a control sample of field galaxies from the same wide-field imaging data. The QSO host-galaxy asymmetries correlate well with visual tidal interaction indices previously published. The companion galaxies have somewhat higher asymmetry than the control galaxy sample, and their asymmetry is inversely correlated with the distance from the QSO. The distribution of QSO-companion asymmetry indices is different from that for matched control field galaxies at the ∼95% significance level. We present the data and discuss this evidence for tidal and other disturbances in the vicinity of QSOs.

Abstract Copyright: ∼

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

CDS comments: In tab.1 Name NNNN corresponds to the first 4 positions of 2MASS JHHMMSSss+DDMMSSs in Hutchings & al. 2006.

Simbad objects: 13

goto Full paper

goto View the references in ADS

Number of rows : 13
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 2MASS J13323116+0359279 Sy1 13 32 31.1708332128 +03 59 28.115740860   18.52 18.07 17.72   ~ 26 0
2 CSO 466 QSO 14 32 04.6001714712 +39 44 39.040774080   17.00 16.88     ~ 33 0
3 [VV2006] J143515.7+023221 QSO 14 35 15.6585713112 +02 32 21.629595696   17.45 17.15     ~ 28 0
4 2MASS J14420294+1455392 QSO 14 42 02.9380547424 +14 55 39.275222124   19.09 18.55     ~ 19 1
5 2MASS J14500090+1429486 Sy1 14 50 00.9024099648 +14 29 48.537900060   18.70 18.33     ~ 15 0
6 IRAS F15002+4945 QSO 15 01 50.5106469289 +49 33 38.303035260   20.12 19.50     ~ 14 0
7 2MASS J15493872+1245092 QSO 15 49 38.7147322320 +12 45 09.161026308   19.21 18.54 17.61   ~ 40 0
8 2MASSI J1550593+212808 Sy1 15 50 59.3075623704 +21 28 08.883698412   17.86 17.66     ~ 18 0
9 7C 161618.10+350919.00 QSO 16 18 09.7431395277 +35 02 08.822832862   20.20   18.25   ~ 13 1
10 2MASS J16442014+5636445 QSO 16 44 20.1253040448 +56 36 44.441002944           ~ 2 0
11 2MASS J17000298+2118232 Sy1 17 00 02.9806443960 +21 18 23.034953916           ~ 9 0
12 [VV2006] J170056.0+243927 QSO 17 00 56.0112214200 +24 39 28.142139852   17.44 17.35     ~ 25 0
13 2MASS J17155976+2807169 Sy2 17 15 59.7902 +28 07 16.953   21.94 21.31 20.80   ~ 24 0

To bookmark this query, right click on this link: simbad:objects in 2008AJ....135.1692H and select 'bookmark this link' or equivalent in the popup menu