2012A&A...543A..64F


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.28CET18:37:48

2012A&A...543A..64F - Astronomy and Astrophysics, volume 543A, 64-64 (2012/7-1)

A study of the remarkable galaxy system AM 546-324 (the core of Abell S0546).

FAUNDEZ-ABANS M., KRABBE A.C., DE OLIVEIRA-ABANS M., DA ROCHA-POPPE P.C., RODRIGUES I., FERNANDES-MARTIN V.A. and FERNANDES I.F.

Abstract (from CDS):

We report first results of an investigation of the tidally disturbed galaxy system AM546-324, whose two principal galaxies 2MFGC04711 and AM0546-324 (NED02) were previously classified as interacting doubles. This system was selected to study the interaction of ellipticals in a moderately dense environment. We provide spectral characteristics of the system and present an observational study of the interaction effects on the morphology, kinematics, and stellar population of these galaxies. The study is based on long-slit spectrophotometric data in the range of ∼4500-8000Å obtained with the Gemini Multi-Object Spetrograph at Gemini South (GMOS-S). We have used the stellar population synthesis code STARLIGHT to investigate the star formation history of these galaxies. The Gemini/GMOS-S direct r-G0303 broad band pointing image was used to enhance and study fine morphological structures. The main absorption lines in the spectra were used to determine the radial velocity. Along the whole long-slit signal, the spectra of the Shadowy galaxy (discovered by us), 2MFGC04711, and AM0546-324 (NED02) resemble that of an early-type galaxy. We estimated redshifts of z=0.0696, z=0.0693 and z=0.0718, corresponding to heliocentric velocities of 20141km/s, 20057km/s, and 20754km/s for the Shadowy galaxy, 2MFGC04711 and AM0546-324 (NED02), respectively. The central regions of 2MFGC04711 and AM0546-324 (NED02) are completely dominated by an old stellar population of 2x109<t≤13x109yr and do not show any spatial variation in the contribution of the stellar-population components. The observed rotation profile distribution of 2MFGC04711 and AM0546-324 (NED02) can be adequately interpreted as an ongoing stage of interaction with the Shadowy galaxy as the center of the local gravitational potential-well of the system. The three galaxies are all early-type. The extended and smooth distribution of the material in the Shadowy galaxy is a good laboratory to study direct observational signatures of tidal friction in action.

Abstract Copyright:

Journal keyword(s): galaxies: general - galaxies: interactions - galaxies: kinematics and dynamics - galaxies: individual: AM0546-324 - galaxies: individual: 2MFGC04711

Nomenclature: Table 1, Table 2 : [FKD2012] A (Nos P,K,C,S) ; [FKD2012] AM546-324

Simbad objects: 18

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Number of rows : 18

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 ESO 303-11 LIN 04 19 39.0181463028 -39 10 25.188785274   15.07       ~ 18 1
2 ESO-LV 303-0110 G 04 19 39.4 -39 10 15   16.11   14.71   ~ 3 0
3 2MASX J04374542-4717339 G 04 37 45.4116629838 -47 17 33.516813754   16.80   15.57   ~ 6 0
4 ESO 251-14 G 04 37 46.0047807105 -47 15 11.926590890   15.16   14.10   ~ 15 0
5 ESO 202-45 IG 04 39 20.825 -50 31 50.56   16.05   14.75   ~ 9 0
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14492 1
7 2MASX J05481766-3239441 G 05 48 25.81 -32 39 49.5           ~ 1 0
8 ESO 363-27 rG 05 48 27.600 -32 58 38.10   14.20   12.71   ~ 30 0
9 ACO S 546 ClG 05 48 32 -32 40.1           ~ 4 0
10 [FKD2012] P G 05 48 32.50 -32 39 54.1           ~ 1 0
11 2MFGC 4711 GiC 05 48 34.1829569470 -32 39 30.570573901   16.49   15.09   ~ 6 0
12 [FKD2012] K ? 05 48 34.20 -32 39 44.5           ~ 1 0
13 [FKD2012] AM546-324 IG 05 48 34.6 -32 39 44           ~ 1 0
14 [FKD2012] S G 05 48 34.70 -32 39 46.2           ~ 1 0
15 2MASX J05483518-3240006 GiC 05 48 35.1967796318 -32 40 00.685889035           ~ 3 0
16 [FKD2012] C G 05 48 35.40 -32 40 11.5           ~ 1 0
17 ACO 1965 ClG 14 45 13 +36 27.4           ~ 6 0
18 ESO 189-2 PaG 21 49 09 -54 18.0           ~ 11 0

    Equat.    Gal    SGal    Ecl

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2020.01.28-18:37:48

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