2009A&A...507.1303F


Query : 2009A&A...507.1303F

2009A&A...507.1303F - Astronomy and Astrophysics, volume 507, 1303-1311 (2009/12-1)

The ring galaxy HRG 54103: a first study.

FAUNDEZ-ABANS M., FERNANDES I.F., DE OLIVEIRA-ABANS M., POPPE P.C.R. and MARTIN V.A.F.

Abstract (from CDS):

We report the first study of the peculiar ring galaxy HRG54103 which was previously classified as a Saturn-like type galaxy. The study is based on low resolution spectroscopy and photometric observations in the optical band to highlight the characteristics of this almost isolated galaxy. The colour distribution of HRG54103 was examined through direct CCD BVRI Kron-Cousins system imagery. Color-color diagrams of the bulge and ring are displayed and further compared with the star-forming ring galaxy HRG 2302. The results of image enhancement of the morphological structure of this galaxy are discussed. The nuclear emission-line spectrum resembles that of a Seyfert2/LINER object, with z=0.022 and heliocentric V=6483±18km/s, in agreement with the literature. The nuclear, bulge and ring section radial velocities along the ring major axis show a peculiar distribution, which together with the [NII]/Hα and [SII]/Hα ratios and image enhancement suggest an offset nucleus and an internal tilted ring or shell. HRG54103 is a peculiar galaxy with an intermediate activity region, probably due to a residual excitation effect through the central AGN phenomenon. The individual sections of the color-color map are redder than a typical star-forming ring galaxy, in agreement with the behavior of the [SII]/Hα versus [NII]/Hα diagnostic diagram. The two bulge satellites, the plume-like appendix, and the disk-ring asymmetry suggest a possible merger event in the recent past of this object, which could also have caused its formation.

Abstract Copyright:

Journal keyword(s): galaxies: Seyfert - galaxies: photometry - galaxies: kinematics and dynamics - galaxies: individual: HRG 54103 - galaxies: active - galaxies: peculiar

Nomenclature: Fig. 1: [FFO2009] a (Nos a-c), [FFO2009] F N=1, [FFO2009] WW (Nos S, SE).

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 NAME Cartwheel EmG 00 37 41.1133192392 -33 42 58.515101748   19.26   18.52   ~ 285 1
2 [FFO2009] F ? 01 18 44.4 -19 37 35           ~ 1 0
3 [FFO2009] SE ? 01 18 44.4 -19 37 35           ~ 1 0
4 [FFO2009] S ? 01 18 44.4 -19 37 35           ~ 1 0
5 ESO 542-3 Sy2 01 18 44.4729709800 -19 37 36.475043196   14.36   12.86   ~ 27 0
6 [FFO2009] b G 01 18 48.100 -19 38 38.00           ~ 1 0
7 APMUKS (BJ) B011622.67-195450.6 G 01 18 48.480 -19 39 04.85           ~ 2 0
8 GSC2.3 S0MP005276 G 01 18 49.605 -19 37 26.82   20.61   19.79   ~ 1 0
9 CXOCDFS J033206.4-274728 EmG 03 32 06.446 -27 47 28.96   23.7799   22.728 21.488 ~ 46 0
10 NGC 2855 EmG 09 21 27.4894926552 -11 54 34.337758068   13.24 12.23 10.77   ~ 92 0
11 M 96 GiP 10 46 45.744 +11 49 11.78 10.42 10.15 9.25 8.99   ~ 821 1
12 M 58 Sy2 12 37 43.5 +11 49 06 10.80 10.48 9.66     ~ 1081 2
13 NGC 4698 Sy2 12 48 22.9082830584 +08 29 14.667552276   13.24 12.27     ~ 485 0
14 NGC 4941 Sy2 13 04 13.1036380320 -05 33 05.752803672   13.18 12.23 10.74   ~ 370 0
15 HRG 02302 G 16 32 35.00 -81 05 37.5           ~ 7 0
16 NGC 7702 Sy2 23 35 28.8830240088 -56 00 44.260443792   12.97 12.22 11.58   ~ 59 0

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