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Query : 2005AJ....129.1832G |
2005AJ....129.1832G - Astron. J., 129, 1832-1848 (2005/April-0)
Small-scale systems of galaxies. II. Properties of the NGC 4756 group of galaxies.
GRUETZBAUCH R., KELM B., FOCARDI P., TRINCHIERI G., RAMPAZZO R. and ZEILINGER W.W.
Abstract (from CDS):
The nine member galaxies are located in the core part of the NGC 4756 group (a strip ~300 kpc in diameter, H0=70 km/s/Mpc), which has a very loose configuration. The central part of the NGC 4756 group contains a significant fraction of early-type galaxies. Three new group members with previously unknown systemic velocities are identified, one of which is type dE. At about 7'.5 southwest of NGC 4756 a substructure of the group is detected, including IC 829, MCG -2-33-35, MCG -2-33-36, and MCG -2-33-38, that meets the Hickson criteria for being a compact group. Most of the galaxies in this substructure show interaction signatures. We do not detect apparent fine structure and signatures of recent interaction events in the early-type galaxy population, with the exception of a strong dust lane in the elliptical galaxy MCG -2-33-38. However, this galaxy displays signatures of nuclear activity. Strong [O III], [N II], and [S II] line emission, combined with comparatively weak but broad Hα emission, suggests an intermediate Seyfert type classification. Although the area is heavily contaminated by the background cluster A1631, X-ray data suggest the presence of a hot intergalactic medium related to the detected X-ray emission of the group. The present results are discussed in the context of group evolution.
Abstract Copyright: ∼
Journal keyword(s): Galaxies: Distances and Redshifts - Galaxies: Interactions - Galaxies: Photometry - Techniques: Spectroscopic
VizieR on-line data: <Available at CDS (J/AJ/129/1832): table6.dat table7.dat table8.dat>
Nomenclature: Fig.1, Table 3: [GKF2005] New N (Nos 1-2). Tables 6, 7: [GKF2005] NNNNN N=15+99 among (Nos 2132-20587).
Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.
Simbad objects: 45
Number of rows : 45 |
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 | RXC J0252.8-0116 | ClG | 02 52 49.4 | -01 16 27 | ~ | 102 | 0 | |||||
2 | NGC 1132 | EmG | 02 52 51.82 | -01 16 29.0 | 13.9 | 12.16 | ~ | 167 | 0 | |||
3 | MCG-01-33-011 | EmG | 12 48 43.574 | -05 15 09.60 | 14.5 | 14.4 | 13.9 | ~ | 30 | 0 | ||
4 | ACO 3526 | ClG | 12 48 51.8 | -41 18 21 | ~ | 1066 | 2 | |||||
5 | IC 3799 | EmG | 12 48 59.656 | -14 23 57.25 | 14.1 | 15.15 | 13.5 | ~ | 42 | 0 | ||
6 | 2MASXI J1249528-150051 | GiC | 12 49 52.9052726304 | -15 00 51.721718940 | 14 | 15.54 | ~ | 9 | 0 | |||
7 | NOGG H 644 | GrG | 12 50 04.4 | -14 34 28 | ~ | 2 | 0 | |||||
8 | MCG-02-33-017 | GiG | 12 50 04.691 | -14 44 00.56 | 12.4 | 11.70 | 11.9 | ~ | 44 | 0 | ||
9 | NGC 4714 | GiG | 12 50 19.2482099040 | -13 19 27.739159500 | 14 | 12.20 | ~ | 26 | 0 | |||
10 | IC 3822 | GiG | 12 50 22.7210292144 | -14 19 19.039817244 | 15 | 14.05 | ~ | 22 | 0 | |||
11 | LGG 306 | GrG | 12 50 43.8 | -14 52 59 | ~ | 2 | 0 | |||||
12 | NGC 4726 | EmG | 12 50 46.0572457128 | -14 16 06.711081276 | 15.68 | 14.47 | ~ | 23 | 1 | |||
13 | IC 3827 | GiG | 12 50 52.130 | -14 29 30.85 | 14 | 13.22 | ~ | 24 | 0 | |||
14 | 6dFGS gJ125052.3-145424 | GiC | 12 50 52.3282535448 | -14 54 23.552755380 | 15 | 14.83 | ~ | 11 | 0 | |||
15 | NGC 4724 | G | 12 50 54.1 | -14 19 50 | 15 | ~ | 8 | 0 | ||||
16 | 2MASXI J1251004-154050 | GiC | 12 51 00.45 | -15 40 50.4 | 16 | ~ | 10 | 0 | ||||
17 | MCG-02-33-033 | GiG | 12 52 05.4489726360 | -15 27 30.607204248 | 14.3458004 | 13.7990055 | 13.45 | ~ | 24 | 0 | ||
18 | NGC 4748 | Sy1 | 12 52 12.4650934680 | -13 24 53.262019944 | 14.73 | 14.03 | 12.82 | ~ | 258 | 0 | ||
19 | MCG-02-33-036 | GiG | 12 52 25.5393837456 | -15 31 01.827421644 | 14.5486097 | 13.9528580 | 13.70 | ~ | 23 | 0 | ||
20 | IC 829 | GiG | 12 52 27.4175023200 | -15 31 06.866980896 | 14.1815300 | 13.5634947 | 13.48 | ~ | 26 | 0 | ||
21 | MCG-02-33-035 | EmG | 12 52 29.4389734968 | -15 29 58.197890148 | 17 | 14.83 | ~ | 17 | 0 | |||
22 | USGC S188 | GrG | 12 52 30.6 | -15 30 27 | ~ | 3 | 0 | |||||
23 | WINGS J125241.38-153004.6 | GiC | 12 52 41.3568 | -15 30 04.824 | ~ | 5 | 0 | |||||
24 | 6dFGS gJ125248.9-153521 | GiC | 12 52 48.8674344816 | -15 35 20.963814360 | 15 | 15.32 | ~ | 10 | 0 | |||
25 | ACO 1631 | ClG | 12 52 50.6 | -15 25 37 | ~ | 171 | 1 | |||||
26 | RASSCALS SS2b189 | GrG | 12 52 50.6 | -15 25 37 | ~ | 2 | 0 | |||||
27 | 2MASXI J1252510-152928 | GiC | 12 52 51.0857761968 | -15 29 29.693380416 | 15 | 14.90 | ~ | 15 | 0 | |||
28 | NGC 4756 | BiC | 12 52 52.621 | -15 24 47.85 | 13 | 11.80 | ~ | 67 | 0 | |||
29 | LEDA 910856 | GiG | 12 52 54.56544 | -15 28 07.1616 | ~ | 7 | 0 | |||||
30 | LEDA 83619 | GiC | 12 52 59.3838 | -15 21 49.231 | 16 | ~ | 12 | 0 | ||||
31 | LEDA 43808 | GiC | 12 53 33.94 | -15 52 43.8 | 15 | ~ | 9 | 0 | ||||
32 | 2MASXI J1253423-151655 | GiC | 12 53 42.3223463304 | -15 16 55.845820416 | 15.1244183 | 14.5296707 | 14.31 | ~ | 26 | 0 | ||
33 | 2MASX J12542285-1523589 | GiC | 12 54 22.8594022608 | -15 23 58.568173224 | 16 | 15.20 | ~ | 10 | 0 | |||
34 | 2MFGC 10195 | GiC | 12 54 26.9740468680 | -14 42 07.991879400 | 14 | 14.28 | ~ | 20 | 0 | |||
35 | NGC 4782 | rG | 12 54 35.698 | -12 34 06.92 | 13 | 12.75 | 13.11 | ~ | 153 | 2 | ||
36 | NGC 4783 | GiP | 12 54 36.60 | -12 33 28.2 | 12.5 | 12.80 | ~ | 125 | 1 | |||
37 | MCG-02-33-054 | EmG | 12 54 43.5402226968 | -12 45 38.622826980 | 15 | 17.56 | ~ | 21 | 0 | |||
38 | LEDA 43966 | EmG | 12 54 49.50 | -16 03 08.3 | 15 | 15.40 | ~ | 12 | 0 | |||
39 | NGC 4794 | Sy2 | 12 55 10.510 | -12 36 30.37 | 14 | 13.0 | 12.24 | ~ | 31 | 0 | ||
40 | LEDA 44021 | EmG | 12 55 19.2488657592 | -14 56 58.854132996 | 14 | 14.36 | ~ | 18 | 0 | |||
41 | LGG 316 | GrG | 12 56 20 | -13 11.3 | ~ | 6 | 0 | |||||
42 | NGC 4825 | Sy2 | 12 57 12.231 | -13 39 53.47 | 9.3 | 11.58 | ~ | 52 | 0 | |||
43 | MCG-02-33-091 | GiG | 13 01 06.0168671808 | -14 19 34.399099056 | 15 | 13.88 | ~ | 19 | 0 | |||
44 | Z 368-2 | AG? | 19 11 49.387 | +83 54 19.53 | 14.80 | ~ | 25 | 0 | ||||
45 | NAME NGC 4756 Group | GrG | ~ | ~ | ~ | 5 | 1 |
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