2015MNRAS.447.1224M


Query : 2015MNRAS.447.1224M

2015MNRAS.447.1224M - Mon. Not. R. Astron. Soc., 447, 1224-1241 (2015/February-3)

Constraining the galaxy mass content in the core of A383 using velocity dispersion measurements for individual cluster members.

MONNA A., SEITZ S., ZITRIN A., GELLER M.J., GRILLO C., MERCURIO A., GREISEL N., HALKOLA A., SUYU S.H., POSTMAN M., ROSATI P., BALESTRA I., BIVIANO A., COE D., FABRICANT D.G., HWANG H.S. and KOEKEMOER A.

Abstract (from CDS):

We use velocity dispersion measurements of 21 individual cluster members in the core of Abell 383, obtained with Multiple Mirror Telescope Hectospec, to separate the galaxy and the smooth dark halo (DH) lensing contributions. While lensing usually constrains the overall, projected mass density, the innovative use of velocity dispersion measurements as a proxy for masses of individual cluster members breaks inherent degeneracies and allows us to (a) refine the constraints on single galaxy masses and on the galaxy mass-to-light scaling relation and, as a result, (b) refine the constraints on the DM-only map, a high-end goal of lens modelling. The knowledge of cluster member velocity dispersions improves the fit by 17 percent in terms of the image reproduction χ2, or 20 percent in terms of the rms. The constraints on the mass parameters improve by ∼ 10 percent for the DH, while for the galaxy component, they are refined correspondingly by ∼ 50 percent, including the galaxy halo truncation radius. For an L* galaxy with M^*_B=-20.96, for example, we obtain best-fitting truncation radius r_tr^*=20.5^+9.6_-6.7 kpc and velocity dispersion σ* = 324±17 km/s. Moreover, by performing the surface brightness reconstruction of the southern giant arc, we improve the constraints on rtr of two nearby cluster members, which have measured velocity dispersions, by more than ∼ 30 percent. We estimate the stripped mass for these two galaxies, getting results that are consistent with numerical simulations. In the future, we plan to apply this analysis to other galaxy clusters for which velocity dispersions of member galaxies are available.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): gravitational lensing: strong - galaxies: clusters: general - galaxies: clusters: individual: A383 - galaxies: haloes - dark matter

Nomenclature: Table 2: [MSZ2015] NNNN N=30 among (Nos 15-1670).

CDS comments: In Table 2 : G1 = SDSS J024802.41-033201.7, G2 = SDSS J024803.40-033209.1, GR = SDSS J024803.64-033115.6 et BCG = 2MASX J02480342-0331447.

Simbad objects: 73

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Number of rows : 73
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ZwCl 0024+1652 ClG 00 26 36.0 +17 08 36     18.35     ~ 611 1
2 ACO 113 ClG 00 53 32 -04 36.7           ~ 5 0
3 ClG 0055-2754 ClG 00 56 56.8 -27 40 29   21.9       ~ 83 0
4 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 654 0
5 SDSS J024800.27-033129.0 G 02 48 00.276 -03 31 29.02           ~ 2 0
6 SDSS J024800.54-033121.4 G 02 48 00.541 -03 31 21.47           ~ 2 0
7 [MSZ2015] 1342 G 02 48 00.60 -03 32 26.8           ~ 1 0
8 SDSS J024800.96-033154.5 GiC 02 48 00.967 -03 31 54.59           ~ 3 0
9 SDSS J024801.10-033223.2 G 02 48 01.100 -03 32 23.22           ~ 2 0
10 [MSZ2015] 901 G 02 48 01.90 -03 31 45.8           ~ 1 0
11 [ZBC2011] 9.4 LI? 02 48 01.918 -03 31 40.23           ~ 3 0
12 [SKE2001] B7 LeI 02 48 02.127 -03 31 41.14           ~ 7 0
13 SDSS J024802.13-033043.8 G 02 48 02.131 -03 30 43.82           ~ 2 0
14 [SKE2001] B03c LeI 02 48 02.185 -03 32 00.51           ~ 7 0
15 [SKE2001] B03b LeI 02 48 02.218 -03 32 02.39           ~ 7 0
16 [ZBC2011] 3.4 LeI 02 48 02.274 -03 32 02.09           ~ 3 0
17 [SKE2001] B02e LeI 02 48 02.281 -03 31 59.45           ~ 7 0
18 [SKE2001] B00a LeI 02 48 02.292 -03 31 49.64           ~ 7 0
19 [SKE2001] B02d LeI 02 48 02.407 -03 31 59.71           ~ 7 0
20 DES J024802.41-033201.7 rG 02 48 02.412 -03 32 01.76           ~ 4 0
21 [ZBC2011] 2.3 LeI 02 48 02.440 -03 31 53.23           ~ 7 0
22 [MSZ2015] 208 G 02 48 02.60 -03 30 37.7           ~ 1 0
23 SDSS J024802.78-033146.9 GiC 02 48 02.786 -03 31 46.93           ~ 3 0
24 [MSZ2015] 742 G 02 48 02.80 -03 31 32.8           ~ 1 0
25 [SKE2001] B03a LeI 02 48 02.829 -03 32 07.05           ~ 8 0
26 [SKE2001] B01b LeI 02 48 02.832 -03 31 58.16           ~ 7 0
27 [SKE2001] B01a LeI 02 48 02.920 -03 31 59.06           ~ 7 0
28 SDSS J024802.97-033018.0 GiC 02 48 02.972 -03 30 18.05           ~ 3 0
29 SDSS J024802.97-033020.7 rG 02 48 02.975 -03 30 20.71           ~ 4 0
30 [SKE2001] B02c LeI 02 48 02.997 -03 32 07.05           ~ 8 0
31 [ZBC2011] 7.3 LI? 02 48 03.130 -03 31 22.16           ~ 3 0
32 [ZFM2015] A383 5.1 LeG 02 48 03.264 -03 31 34.77         25.9 ~ 20 1
33 [SKE2001] B16 LeI 02 48 03.366 -03 31 59.58           ~ 6 0
34 [ZBC2011] 8.2 LI? 02 48 03.386 -03 31 23.46           ~ 3 0
35 SDSS J024803.39-033145.2 BiC 02 48 03.392 -03 31 45.22   17.89   15.76   ~ 20 1
36 SDSS J024803.40-033209.1 GiC 02 48 03.402 -03 32 09.14           ~ 3 0
37 [ZBC2011] 1.2 LeI 02 48 03.485 -03 31 42.56           ~ 4 0
38 [ZBC2011] 7.2 LI? 02 48 03.568 -03 31 22.55           ~ 3 0
39 DES J024803.63-033115.6 rG 02 48 03.641 -03 31 15.62           ~ 4 0
40 SDSS J024803.67-033158.2 GiC 02 48 03.676 -03 31 58.22           ~ 3 0
41 [ZBC2011] 8.1 LI? 02 48 03.681 -03 31 24.43           ~ 3 0
42 [ZBC2011] 6.4 LeI 02 48 03.690 -03 31 36.21           ~ 4 0
43 [MSZ2015] 233 G 02 48 03.70 -03 30 43.2           ~ 1 0
44 SDSS J024803.74-033101.8 GiC 02 48 03.749 -03 31 01.87           ~ 3 0
45 SDSS J024803.76-033134.8 G 02 48 03.761 -03 31 34.86           ~ 2 0
46 [ZBC2011] 9.3 LI? 02 48 03.872 -03 31 35.03           ~ 3 0
47 [ZBC2011] 9.1 LI? 02 48 03.920 -03 32 00.83           ~ 3 0
48 [ZBC2011] 9.2 LI? 02 48 04.046 -03 31 59.21           ~ 3 0
49 [ZBC2011] 7.1 LI? 02 48 04.089 -03 31 25.54           ~ 3 0
50 [SKE2001] B6 LeI 02 48 04.241 -03 31 53.12           ~ 7 0
51 [MSZ2015] 601 G 02 48 04.50 -03 31 19.6           ~ 1 0
52 SDSS J024804.50-033206.3 GiC 02 48 04.500 -03 32 06.32           ~ 3 0
53 [ZFM2015] A383 5.2 LeG 02 48 04.600 -03 31 58.47         26.2 ~ 17 1
54 [MSZ2015] 792 G 02 48 04.60 -03 31 34.5           ~ 1 0
55 SDSS J024804.92-033236.4 GiC 02 48 04.920 -03 32 36.50           ~ 3 0
56 [MSZ2015] 496 G 02 48 05.10 -03 31 10.1           ~ 1 0
57 [MSZ2015] 1551 G 02 48 05.30 -03 32 44.0           ~ 1 0
58 SDSS J024805.40-033218.2 rG 02 48 05.401 -03 32 18.22           ~ 4 0
59 [MSZ2015] 1362 G 02 48 05.50 -03 32 30.4           ~ 1 0
60 SDSS J024805.88-033131.7 GiC 02 48 05.882 -03 31 31.71           ~ 3 0
61 [MSZ2015] 1670 G 02 48 05.90 -03 32 53.0           ~ 1 0
62 [MSZ2015] 367 G 02 48 06.80 -03 30 55.3           ~ 1 0
63 ACO 383 ClG 02 48 06.9 -03 29 32           ~ 312 0
64 [MSZ2015] 1034 G 02 48 07.10 -03 31 46.9           ~ 1 0
65 SDSS J024808.28-033139.0 GiC 02 48 08.282 -03 31 39.03           ~ 3 0
66 SDSS J024808.55-033128.7 GiC 02 48 08.5566740473 -03 31 28.679145761           ~ 3 0
67 MCS J0416.1-2403 ClG 04 16 08.380 -24 04 20.80           ~ 242 0
68 ACO 611 ClG 08 00 58.7 +36 02 49           ~ 234 0
69 MCS J1206.2-0847 ClG 12 06 12.2 -08 48 02           ~ 195 0
70 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1047 0
71 ACO 2390 ClG 21 53 34.6 +17 40 11           ~ 641 2
72 ACO S 1077 ClG 22 58 52.34 -34 46 54.6           ~ 180 0
73 [ZBC2011] 4 LeI ~ ~           ~ 2 0

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2021.08.01-07:07:33

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