2003AJ....126.1245T

Query : 2003AJ....126.1245T

2003AJ....126.1245T - Astron. J., 126, 1245-1256 (2003/September-0)

Small-scale systems of galaxies. I. Photometric and spectroscopic properties of members.

TANVUIA L., KELM B., FOCARDI P., RAMPAZZO R. and ZEILINGER W.W.

Abstract (from CDS):

This paper is the first of a series addressed to the investigation of galaxy formation/evolution in small-scale systems of galaxies (SSSGs), which are located in low-density cosmic environments. Our algorithm for SSSG selection includes galaxy systems of two or more galaxies lying within Δcz≤1000 km.s–1 and a 200 h–1100 kpc radius volume. We present the analysis of the photometric and spectroscopic properties of 19 member galaxies belonging to a sample of 11 SSSGs. In the µe-re plane early-type members may be considered ``ordinary'', rather than ``bright'', galaxies, with a significant fraction of galaxies having a disk or disky isophotes. We do not detect fine structure or signatures of recent interaction events in the early-type galaxy population, a picture also confirmed by the spectroscopy. At odds with these findings are several spiral members with open arm configurations, as expected in interacting systems. At the same time, emission lines in the spectra of spiral members fall in the H II regions regime. None of the objects displays unambiguous indications of nuclear activity, although four spiral nuclei could be ascribed to the class of Seyferts. The star formation rate seems enhanced over the average expected in spiral galaxies only for poorer SSSGs in particular pairs (≤50 M☉.yr–1) but without being in the range of starburst systems.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Distances and Redshifts - Galaxies: Interactions - Galaxies: Photometry - Techniques: Spectroscopic

Nomenclature: Table 1: SSSG NN (Nos 1-11). Fig.1, Table 2: SSSG NNa N=24.

Simbad objects: 48

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Number of rows : 48
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 SSSG 6 ? 00 02 -03.7           ~ 1 0
2 MCG-01-01-024 Sy1 00 02 34.8266392776 -03 42 38.215435536   14   13.44   ~ 32 0
3 MCG-01-01-025 EmG 00 02 38.542 -03 37 51.67   16   15.01   ~ 7 0
4 MCG-01-01-026 Sy1 00 02 48.6771752424 -03 36 21.569504292   15   14.11   ~ 17 0
5 MCG-02-01-012 LIN 00 03 22.2187958808 -10 46 14.257434720   14       ~ 11 0
6 SSSG 7 ? 00 03.5 -10 45           ~ 1 0
7 NGC 7808 Sy2 00 03 32.1315693168 -10 44 40.883874792   14.33 13.48     ~ 38 1
8 V* T Phe Mi* 00 30 26.2337742744 -46 24 33.379722396   12.46 11.43 12.43   M7e 72 0
9 LEDA 4461 GiP 01 14 22.0 -55 24 02   13.11   12.08   ~ 16 0
10 NGC 454 PaG 01 14 22.93 -55 23 55.4   14.26       ~ 55 1
11 LEDA 4468 Sy2 01 14 24.9356626320 -55 23 49.309036656   13.13 13.58 11.93   ~ 84 0
12 NGC 707 LIN 01 51 27.1003952064 -08 30 19.343130444   14   12.83   ~ 35 1
13 MCG-02-05-065 Sy2 01 51 34.0086247608 -08 23 56.096137608   15   16.15   ~ 15 0
14 RR95 45 PaG 02 06 -36.3           ~ 1 0
15 ESO 354-36 GiP 02 06 22.308 -36 18 02.14   16.30   14.92   ~ 13 0
16 NGC 824 Sy1 02 06 53.2524217152 -36 27 11.497882896   14.14   12.62   ~ 33 1
17 NGC 1006 EmG 02 37 34.8520945776 -11 01 30.280197216   14   13.11   ~ 19 0
18 SSSG 9 ? 02 37.6 -11 01           ~ 1 0
19 NGC 1011 EmG 02 37 38.8923750720 -11 00 19.948634388   15   13.93   ~ 14 0
20 NGC 1017 G 02 37.9 -11 00   14       ~ 4 0
21 RXC J0252.8-0116 ClG 02 52 49.4 -01 16 27           ~ 102 0
22 NGC 1132 EmG 02 52 51.82 -01 16 29.0   13.9   12.16   ~ 167 0
23 PG 1633+099 HS* 16 35 24.0241690848 +09 47 49.891209036 13.215 14.205 14.396 14.481 14.609 sdB 111 0
24 2MASX J17150874+0827224 G 17 15 08.7400712808 +08 27 22.649272884   15.4       ~ 11 0
25 2MASX J17151190+0825354 G 17 15 11.9267473656 +08 25 34.943621736   15.2       ~ 5 0
26 2MASX J17171330+0744284 GiG 17 17 13.3228533120 +07 44 29.161300380   15.3       ~ 13 0
27 SSSG 1 ClG 17 17.4 +07 41           ~ 2 0
28 2MASX J17172521+0741434 GiG 17 17 25.2144676080 +07 41 43.165773636   15.4       ~ 13 0
29 2MASX J17173341+0739425 GiG 17 17 33.413 +07 39 42.59   15.2       ~ 14 0
30 UGC 10789 GiG 17 17 44.6042622504 +07 36 51.300149436   15.7       ~ 17 0
31 SSSG 2 ClG 17 31.9 +06 30           ~ 2 0
32 2MASX J17315426+0630067 G 17 31 54.2300177256 +06 30 06.991984188   15.5       ~ 10 0
33 2MASX J17315493+0629007 G 17 31 54.9565995600 +06 29 00.126231756   15.5       ~ 11 0
34 2MASX J17315701+0628087 G 17 31 57.0254764560 +06 28 09.058318644   15.4       ~ 5 0
35 2MASX J17315869+0631557 G 17 31 58.696 +06 31 55.75   15.4       ~ 5 0
36 SA 110- reg 18 45 +00.6           ~ 100 0
37 SSSG 3 ? 20 32.6 +09 54           ~ 1 0
38 MCG+02-52-015 AG? 20 32 36.6740714328 +09 53 01.813008336   17       ~ 9 0
39 NGC 6927 GiP 20 32 38.1875096712 +09 54 58.767151032   15.6       ~ 19 0
40 NGC 6928 GiP 20 32 50.222 +09 55 35.15   13.7       ~ 78 0
41 NGC 6930 AG? 20 32 58.80 +09 52 28.0   14.3       ~ 35 0
42 UGC 11657 EmG 20 59 46.897 -01 53 15.58   14.6 13.49 14.5 14.3 ~ 24 0
43 KPG 551 PaG 20 59.8 -01 53           ~ 2 0
44 UGC 11658 Sy2 20 59 48.2628790008 -01 52 22.469704212   14.4       ~ 24 0
45 SSSG 5 ? 22 01 +08.1           ~ 1 0
46 LEDA 1339199 G 22 01 01.7124860064 +08 06 34.359967296           ~ 4 0
47 LEDA 1339615 G 22 01 10.5707860368 +08 07 30.979646508           ~ 3 0
48 SSSG 8 ? ~ ~           ~ 1 0

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