2017A&A...606A.108C


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST13:56:03

2017A&A...606A.108C - Astronomy and Astrophysics, volume 606A, 108-108 (2017/10-1)

Structural and dynamical modeling of WINGS clusters. I. The distribution of cluster galaxies of different morphological classes within regular and irregular clusters.

CAVA A., BIVIANO A., MAMON G.A., VARELA J., BETTONI D., D'ONOFRIO M., FASANO G., FRITZ J., MOLES M., MORETTI A. and POGGIANTI B.

Abstract (from CDS):

Context. We study the distribution of galaxies in nearby clusters to shed light on the evolutionary processes at work within clusters and prepare for a full dynamical analysis to be conducted in forthcoming papers of this series.
Aims. We use the Wide-field Nearby Galaxy-clusters Survey (WINGS) database complemented with literature data. We assign galaxy membership to individual clusters, then select a sample of 67 clusters with at least 30 spectroscopic members each. 53 of these clusters do not show evidence of substructures in phase-space, as measured by the Dressler-Shectman test, while 14 do. We estimate the virial radii and circular velocities of the 67 clusters by a variety of proxies (velocity dispersion, X-ray temperature, and richness) and use these estimates to build stack samples from these 53 and 14 clusters, that we call "Reg" and "Irr" stacks, respectively. We show that our results are robust with regard to the choice of the virial radii and circular velocities used to scale galaxy radii and velocities in the stacking procedure. We determine the number-density and velocity-dispersion profiles of Elliptical (E), S0, and Spiral+Irregular (S) galaxies in the Reg and Irr samples, separately, and fit models to these profiles.
Methods. The number density profiles of E, S0, and S galaxies are adequately described by either a Navarro, Frenk, & White (NFW) or a cored King model, both for the Reg and Irr samples, with a slight preference for the NFW model. The spatial distribution concentration increases from the S to the S0 and to the E populations, both in the Reg and the Irr stacks, reflecting the well-known morphology-radius relation. Reg clusters have a more concentrated spatial distribution of E and S0 galaxies than Irr clusters, while the spatial distributions of S galaxies in Reg and Irr clusters have a similar concentration. We propose a new phenomenological model that provides acceptable fits to the velocity dispersion profile of all our galaxy samples. The velocity dispersion profiles become steeper and with a higher normalization from E to S0 to S galaxies. The S0 velocity dispersion profile is close to that of E galaxies in Reg clusters, and intermediate between those of E and S galaxies in Irr clusters.
Results. Our results suggest that S galaxies are a recently accreted cluster population, that take ≥3Gyr to evolve into S0 galaxies after accretion, and in doing so modify their phase-space distribution, approaching that of cluster ellipticals. While in Reg clusters this evolutionary process is mostly completed, it is still ongoing in Irr clusters.

Abstract Copyright: © ESO, 2017

Journal keyword(s): galaxies: clusters: general - galaxies: kinematics and dynamics - galaxies: structure - galaxies: structure

Simbad objects: 74

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Number of rows : 74

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 ACO 2717 ClG 00 03 12.9 -35 56 13           ~ 128 0
2 ACO 2734 ClG 00 11 21.60 -28 51 16.6           ~ 132 0
3 ACO 85 ClG 00 41 37.8 -09 20 33           ~ 789 0
4 ACO 119 ClG 00 56 16.8 -01 15 00           ~ 517 2
5 BAX 014.7298+26.9591 ClG 00 58 54.2 +26 57 03           ~ 21 0
6 ACO 133 ClG 01 02 39.0 -21 57 15           ~ 336 1
7 ACO 147 ClG 01 08 10 +02 10.0           ~ 108 0
8 ACO 151 ClG 01 08 52.3 -15 25 01           ~ 182 1
9 ACO 160 ClG 01 12 59.572 +15 29 28.65           ~ 164 0
10 ACO 168 ClG 01 15 09.8 +00 14 51           ~ 321 2
11 ACO 193 ClG 01 25 07.3 +08 41 36           ~ 175 0
12 ACO 376 ClG 02 45 48 +36 51.6           B8.5 146 1
13 ACO 3128 ClG 03 30 34.6 -52 33 12           ~ 169 3
14 ACO 3158 ClG 03 42 39.6 -53 37 50           ~ 271 0
15 ACO 3266 ClG 04 31 11.9 -61 24 23           ~ 371 0
16 ACO 500 ClG 04 38 55.0 -22 05 55           ~ 77 0
17 [FMV2006] A548b ClG 05 45 28 -25 55.0           ~ 6 0
18 ACO 3376 ClG 06 01 42.1521 -39 59 06.227           ~ 270 0
19 ACO 3395 ClG 06 27 31.1 -54 23 58           ~ 179 0
20 ZwCl 0712+5334 ClG 07 16 42.6 +53 24 28           ~ 27 0
21 ACO 602 ClG 07 53 24.2 +29 21 58           ~ 63 0
22 ACO 671 ClG 08 28 31.97 +30 24 19.7           ~ 150 0
23 ACO 754 ClG 09 08 50.1 -09 38 12           ~ 631 1
24 ACO 780 ClG 09 18 30 -12 15.7           ~ 428 0
25 ZwCl 0959+3257 ClG 10 02 23.39 +32 40 59.5           ~ 34 0
26 ACO 957 ClG 10 13 38.42 -00 55 32.6           ~ 192 2
27 ACO 970 ClG 10 17 34.3 -10 42 01           ~ 81 0
28 MCXC J1022.0+3830 ClG 10 22 04.7 +38 30 43           ~ 45 0
29 ACO 1069 ClG 10 39 54.3 -08 36 40           ~ 106 1
30 ACO 1291 ClG 11 32 11.20 +56 01 31.3           ~ 129 0
31 ACO 3490 ClG 11 45 19.6 -34 25 59           ~ 44 1
32 ACO 3497 ClG 12 00 03 -31 23.7           ~ 33 0
33 [FMV2006] A1631a ClG 12 52 52 -15 24.0           ~ 13 0
34 [FMV2006] A3528b ClG 12 54 00 -28 51.0           ~ 4 0
35 [FMV2006] A3528a ClG 12 54 35 -29 23.0           ~ 5 0
36 ACO 3530 ClG 12 55 36 -30 21.2           ~ 89 0
37 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 332 1
38 ACO 3532 ClG 12 57 19.2 -30 22 13           ~ 154 2
39 ACO 1668 ClG 13 03 44.90 +19 16 37.2           ~ 95 0
40 ACO 3556 ClG 13 24 06.2 -31 39 38           ~ 138 0
41 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 237 2
42 ACO 3558 ClG 13 27 54.8 -31 29 32           ~ 406 2
43 ACO 3560 ClG 13 32 23.7 -33 08 21           ~ 120 1
44 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 283 1
45 ACO 1795 ClG 13 49 00.5 +26 35 07           ~ 1154 0
46 ACO 1831 ClG 13 59 10.2 +27 59 28           ~ 139 0
47 ACO 1983 ClG 14 52 44.0 +16 44 46           ~ 235 1
48 ACO 1991 ClG 14 54 30.2 +18 37 51           ~ 306 1
49 NAME NGC 5920 Group ClG 15 21 50.7 +07 42 18     15.13     ~ 287 0
50 ACO 2107 ClG 15 39 47.9 +21 46 21           ~ 233 0
51 ACO 2124 ClG 15 44 59.3 +36 03 40           ~ 191 0
52 ACO 2149 ClG 16 01 22.97 +53 51 59.1           ~ 65 0
53 ACO 2169 ClG 16 14 02.75 +49 12 30.7           ~ 57 0
54 ACO 2256 ClG 17 03 43.5 +78 43 03           ~ 830 1
55 ACO 2271 ClG 17 17 17.5 +78 01 00           ~ 66 0
56 BAX 265.1346+35.6492 ClG 17 40 32.7 +35 38 51           ~ 31 0
57 ZwCl 1810+4949 ClG 18 11 00.1 +49 54 40     14.8     ~ 48 0
58 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 566 1
59 ACO 3716 ClG 20 51 16.7 -52 41 43           ~ 106 1
60 ZW II 108 BiC 21 13 55.918 +02 33 55.39   15.1       ~ 49 1
61 ACO 3809 ClG 21 46 57.5 -43 54 06           ~ 85 0
62 ACO 2382 ClG 21 51 57.2984 -15 36 48.067           ~ 111 0
63 ACO 2399 ClG 21 57 27.64 -07 48 12.9           ~ 163 0
64 ACO 2415 ClG 22 05 25.0 -05 35 23           ~ 108 1
65 ACO 3880 ClG 22 27 49.5 -30 34 40           ~ 85 2
66 ACO 2457 ClG 22 35 40.30 +01 31 33.6           ~ 120 0
67 ZwCl 2307+0713 ClG 23 10 26.6 +07 35 13           ~ 27 0
68 [FMV2006] A2572a ClG 23 17 13 +18 42.0           ~ 10 0
69 ACO 2589 ClG 23 24 00.5 +16 49 29           ~ 297 1
70 ACO 2593 ClG 23 24 31.0 +14 38 29           ~ 198 0
71 ACO 2622 ClG 23 34 53 +27 25.6           ~ 87 0
72 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 211 0
73 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 260 3
74 ACO 4059 ClG 23 56 40.7 -34 40 18           ~ 352 1

    Equat.    Gal    SGal    Ecl

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2020.07.04-13:56:03

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