2005ApJ...624..680K

Query : 2005ApJ...624..680K

2005ApJ...624..680K - Astrophys. J., 624, 680-692 (2005/May-2)

A CCD photometric and morphological study of the extended halo and filaments of ESO 383-45: a galaxy undergoing ram pressure stripping, or a tidal merger remnant?

KEMP S.N., DE LA FUENTE E., FRANCO-BALDERAS A. and MEABURN J.

Abstract (from CDS):

We present BV CCD surface photometry, profiles, and images of the galaxy ESO 383-45, together with other galaxies in the same CCD field. We also present a B-V color map of the field and images of the galaxies enhanced by self-correlation of pixel values and by digital ``unsharp masking.'' The extended halo and system of filaments of ESO 383-45 are seen clearly. We suggest that the evidence (radio jets and their curvature and areas of diffuse optical emission) of a dense intergalactic medium (IGM) in this field toward the center of the IC 4296 cluster may indicate that the galaxy ESO 383-45 is still undergoing ram pressure stripping of its gas, forming stars in the filaments, while the central galaxy has evolved to have a lenticular morphology. On the other hand, there are ``knots'' in the filaments that look like tidal dwarf galaxies in formation, and previous simulations of the tidal interaction of two disk galaxies have produced galaxies that can resemble ESO 383-45 from certain viewing angles. Other galaxies in the field appear to lie beyond the IC 4296 cluster and may be part of sheets of galaxies previously identified as connecting the Abell clusters of the Shapley supercluster. We identify many uncataloged faint extended objects that may represent background clusters of galaxies or knots (possibly of star formation) associated with the filaments and diffuse IGM of ESO 383-45. The present work represents the first multicolor surface photometric study for all of these galaxies, and only ESO 383-45 has previously been studied morphologically, using digitally co-added Schmidt plates obtained by some of the authors.

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Journal keyword(s): Galaxies: Clusters: Individual: Alphanumeric: A3560 - Galaxies: Clusters: Individual: Name: A3565 - Galaxies: Evolution - Galaxies: Interactions - Galaxies: Peculiar - Galaxies: Photometry - Galaxies: Intergalactic Medium

Nomenclature: Table 2: [KDF2005] Na (Nos 1, 1a), [KDF2005] ANa N=30 among (Nos A1 to D6).

Simbad objects: 52

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Number of rows : 52
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
2 NGC 3312 LIN 10 37 02.5165552728 -27 33 53.924090760   12.63 13.96     ~ 122 0
3 [CS62] E5 m * 12 05 03.7995197760 -45 34 15.765504348   16.426 15.814     ~ 2 0
4 [CS62] E5 o * 12 05 04.6300857096 -45 33 48.747134412   17.229 16.525     ~ 2 0
5 [CS62] E5 k * 12 05 11.1192533904 -45 33 50.974709616   15.878 15.376     ~ 2 0
6 TYC 8229-1432-1 * 12 05 24.3933037200 -45 31 35.022208620   12.87 12.46     ~ 6 0
7 NGC 4438 LIN 12 27 45.6705493536 +13 00 31.708096380 11.37 11.02 10.17     ~ 668 2
8 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
9 NAME Shapley Supercluster SCG 13 06.0 -33 04           ~ 677 0
10 ACO 3560 ClG 13 32 23.7 -33 08 21           ~ 145 1
11 NAME IC 4296 Group GrG 13 33 34 -33 37.3           ~ 19 0
12 ACO 3565 ClG 13 36 39 -33 58.3           ~ 116 1
13 IC 4296 rG 13 36 39.03253319 -33 57 57.0730368   11.52 12.99 10.00 10.79 ~ 520 2
14 IC 4299 GiG 13 36 47.5681712208 -34 03 57.009390048   13.82 12.67 12.18   ~ 32 0
15 [KDF2005] A1 G 13 37 36.2 -33 51 15   22.3 21.4     ~ 1 0
16 [KDF2005] A2a PoG 13 37 36.2 -33 51 15           ~ 1 0
17 [KDF2005] A2 G 13 37 36.5 -33 51 04   18.6 17.9     ~ 1 0
18 [KDF2005] A4 G 13 37 39.0 -33 50 43   21.9 20.7     ~ 1 0
19 MCG-05-32-053 GiG 13 37 39.4178591136 -33 48 40.755186144   13.80   12.25 12.63 ~ 36 0
20 [KDF2005] 1 G 13 37 40.9 -33 46 20   21.0 19.9     ~ 1 0
21 [KDF2005] 1a PoG 13 37 41.3 -33 46 25           ~ 1 0
22 LEDA 670641 Sy2 13 37 41.411 -33 51 09.10   16.65   15.54 15.57 ~ 8 0
23 [KDF2005] A5 G 13 37 43.6 -33 50 48           ~ 1 0
24 [KDF2005] B1 G 13 37 44.1 -33 46 01   19.8 18.8     ~ 1 0
25 [KDF2005] B2 G 13 37 45.7 -33 46 53   22.0 20.9     ~ 1 0
26 [KDF2005] C1 G 13 37 45.8 -33 50 13           ~ 1 0
27 [KDF2005] C2 G 13 37 46.3 -33 50 15           ~ 1 0
28 [KDF2005] B3 G 13 37 47.3 -33 46 34   21.9 20.4     ~ 1 0
29 [KDF2005] B4 G 13 37 47.4 -33 46 13   21.0 20.0     ~ 1 0
30 [KDF2005] C3 G 13 37 47.6 -33 50 12   22.7 21.7     ~ 1 0
31 [KDF2005] B5 G 13 37 48.2 -33 46 23   19.1 18.0     ~ 1 0
32 [KDF2005] B5b PoG 13 37 48.3 -33 46 34           ~ 1 0
33 [KDF2005] D1 G 13 37 48.9 -33 48 43   21.9 20.4     ~ 1 0
34 LEDA 670964 G 13 37 49.2 -33 49 44           ~ 3 0
35 [KDF2005] D2 G 13 37 49.3 -33 48 48           ~ 1 0
36 [KDF2005] D2a PoG 13 37 49.4 -33 48 49           ~ 1 0
37 [KDF2005] C4 G 13 37 49.5 -33 51 11   20.5 19.1     ~ 1 0
38 [KDF2005] D3 G 13 37 49.5 -33 48 05   20.1 18.7     ~ 1 0
39 [KDF2005] C5 G 13 37 49.9 -33 51 01   22.5 20.6     ~ 1 0
40 [KDF2005] C6a PoG 13 37 50.0 -33 49 50           ~ 1 0
41 [KDF2005] D4 G 13 37 50.1 -33 48 35           ~ 1 0
42 [KDF2005] C6 G 13 37 50.7 -33 49 43   20.3 19.4     ~ 1 0
43 [KDF2005] C7 G 13 37 51.0 -33 50 04   19.0 17.9     ~ 1 0
44 [KDF2005] D5 G 13 37 51.3 -33 47 58           ~ 1 0
45 [KDF2005] C8a PoG 13 37 51.7 -33 49 55           ~ 1 0
46 [KDF2005] C8 G 13 37 51.9 -33 49 49   20.0 18.8     ~ 1 0
47 [KDF2005] C9 G 13 37 52.3 -33 50 55   22.7 21.6     ~ 1 0
48 WMMA 165 G 13 37 53.1 -33 48 36   16.07   14.93 14.11 ~ 3 0
49 [KDF2005] D6 G 13 37 53.8 -33 47 39   20.4 18.8     ~ 1 0
50 CD-33 9202 * 13 37 53.8178227032 -33 49 02.973047628   11.14 10.19     K0 6 0
51 MCG-05-32-055 GiG 13 38 03.6025392480 -33 52 25.405840452   14.31   13.09   ~ 34 0
52 [KDF2005] A3 G 13 57 36.8 -33 50 40   21.4 20.3     ~ 1 0

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