2002A&A...391..117I


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST21:29:03

2002A&A...391..117I - Astronomy and Astrophysics, volume 391, 117-126 (2002/8-3)

Near-Infrared photometry in J H and Kn bands for polar ring galaxies. II. Global properties.

IODICE E., ARNABOLDI M., SPARKE L.S. and FREEMAN K.C.

Abstract (from CDS):

We discuss the properties of the host galaxy and ring light distributions in the optical and near infrared bands for a sample of Polar Ring Galaxies (PRGs), presented in Paper I (Iodice et al., 2002A&A...391..103I). The goal of this work is to test different formation scenarios for PRGs, proposed by different authors in the last decades, by comparing their predictions with these new data. The strategy is twofold: i) the integrated colors of the main components in these systems are compared with those of standard morphological galaxy types, to investigate whether differences in colors are caused by dust absorption or difference in stellar populations. We then derived an estimate of the stellar population ages in PRGs, which can be used to set constrains on the dynamical modeling and the time evolution of these systems; ii) we analyse the structural parameters of the host galaxy in order to understand whether this component is a standard early-type system as its morphology suggests, and the light distribution in the polar ring to measure its radial extension. These observational results indicate that the global properties of PRGs are better explained by dissipative merging of disks with un-equal masses as proposed by Bekki (1998ApJ...499..635B), rather than the accretion-or stripping-of gas by a pre-existing early-type galaxy.

Abstract Copyright:

Journal keyword(s): galaxies: peculiar - galaxies: photometry - galaxies: evolution - galaxies: formation

Simbad objects: 13

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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 - 2020
#notes
1 IC 51 IG 00 46 24.215 -13 26 32.63   13.41   12.69 12.8 ~ 81 0
2 2MASX J01385522-0745553 GiC 01 38 55.2339846702 -07 45 55.567743550   15.62       ~ 68 0
3 ESO 415-26 G 02 28 20.1028919332 -31 52 51.626152088   14.6   13.14   ~ 71 0
4 NGC 3808 G 11 40 44.2368809521 +22 25 45.523561712   14.1   13.24   ~ 110 2
5 MCG+04-28-020 G 11 40 44.568 +22 26 47.93   15   13.97   ~ 42 1
6 ESO 322-69 GiG 12 44 49.0359408961 -40 42 51.693581748   14.12 13.58 13.29 13.9 ~ 185 0
7 NGC 6285 GiG 16 58 24.016 +58 57 21.23   15.3       ~ 95 0
8 APG 293 G 16 58 27.8 +58 56 48           ~ 113 0
9 NGC 6286 GiG 16 58 31.381 +58 56 10.21   14.2       ~ 166 1
10 2MASX J20235495-5039063 GiG 20 23 54.9116773430 -50 39 06.847911444   14.72   13.59   ~ 55 0
11 ESO 603-21 EmG 22 51 22.061 -20 14 49.62   15.50   14.07   ~ 39 0
12 NGC 7464 GiP 23 01 53.716 +15 58 25.65   14.5       ~ 71 0
13 NGC 7465 GiP 23 02 00.952 +15 57 53.55   13.3       ~ 258 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-21:29:03

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