2019A&A...623A..36M

Query : 2019A&A...623A..36M

2019A&A...623A..36M - Astronomy and Astrophysics, volume 623A, 36-36 (2019/3-1)

Predicted MOND velocity dispersions for a catalog of ultra-diffuse galaxies in group environments.

MULLER O., FAMAEY B. and ZHAO H.

Abstract (from CDS):

The possibility that ultra-diffuse galaxies are lacking dark matter has recently stimulated interest to check the validity of modified Newton dynamics (MOND) predictions on the scale of such galaxies. It has been shown that the external field effect (EFE) induced by the close-by galaxy can suppress the velocity dispersion of these systems, so that they appear almost dark matter free in the Newtonian context. Here, following up on this, we are making a priori predictions for the velocity dispersion of 22 ultra-diffuse galaxies in the nearby Universe. This sample can be used to test MOND and the EFE with future follow-up measurements. We have constructed a catalog of nearby ultra-diffuse galaxies in galaxy group environments, and set upper and lower limits for the possible velocity dispersion allowed in MOND, taking into account possible variations in the mass-to-light ratio of the dwarf and in the distance to the galaxy group. The prediction for the velocity dispersion is made as a function of the three dimensional separation of the dwarf to its host. In 17 out of 22 cases, the EFE plays a crucial role in the prediction.

Abstract Copyright: © O. Müller et al. 2019

Journal keyword(s): galaxies: kinematics and dynamics - galaxies: dwarf - cosmology: theory

Simbad objects: 54

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Number of rows : 54
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 [JMK2016] NGC 7814-DGSAT-7 LSB 00 00 43.95 +15 27 14.3           ~ 1 0
2 [JMK2016] NGC 7814-DGSAT-2 LSB 00 03 06.80 +16 18 33.3           ~ 2 0
3 NGC 7814 GiG 00 03 14.947 +16 08 42.82   12.0       ~ 294 1
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12635 1
5 [CVD2018] NGC1052-DF4 LSB 02 39 15.11 -08 06 58.6     16.5   16.2 ~ 82 0
6 NGC 1035 EmG 02 39 29.136 -08 08 01.11   12.89   13.0 12.6 ~ 178 1
7 NAME Fornax Dwarf Spheroidal G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1740 1
8 [CVD2018] NGC1052-DF1 LSB 02 40 04.7 -08 26 46     18.2   17.9 ~ 5 0
9 NGC 1042 EmG 02 40 23.9724818544 -08 26 00.736256616 11.47 11.56 11.02 11.7 11.4 ~ 260 1
10 NGC 1052 Sy2 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1298 2
11 NAME NGC 1052 Group GrG 02 41 09.3 -08 07 10           ~ 73 0
12 LEDA 3097693 LSB 02 41 46.80 -08 24 09.3     16.2   15.8 ~ 137 0
13 WHI B0240-07 LSB 02 42 38.0 -07 20 17     16.2   16.0 ~ 4 0
14 NGC 1084 GiG 02 45 59.926 -07 34 43.10 11.22 11.59 10.73 10.55 11.1 ~ 368 2
15 NGC 2683 AGN 08 52 41.3064829584 +33 25 18.597681516 11.57 10.68 9.79 9.38   ~ 446 1
16 LEDA 166095 G 08 52 50.8 +33 47 52   16.8       ~ 27 0
17 [KK98a] 70 G 08 55 22.0 +33 33 33   17.7       ~ 15 0
18 M 96 GiP 10 46 45.744 +11 49 11.78 10.42 10.15 9.25 8.99   ~ 819 1
19 NAME Leo dwA LSB 10 46 52.9 +12 44 32     16.6   16.4 ~ 29 0
20 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1463 0
21 NAME M96 Group GrG 10 48 +13.3           ~ 313 0
22 NGC 3384 GiG 10 48 16.8855574392 +12 37 45.371165844   10.0       ~ 596 1
23 [MJB2018] dw1055+11 G? 10 55 43.5 +11 58 05           ~ 3 0
24 [MJB2018] dw1117+15 G? 11 17 02.1 +15 10 17           ~ 2 0
25 NGC 3613 GiG 11 18 36.130 +57 59 59.73   11.6       ~ 213 0
26 NAME Leo Triplet IG 11 19 +13.2           ~ 124 1
27 NGC 3619 GiG 11 19 21.5781353400 +57 45 28.018459368   12.6       ~ 172 0
28 NGC 3628 GiP 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 826 3
29 NGC 3625 GiP 11 20 31.3717167648 +57 46 53.046196500   13.9       ~ 90 0
30 [JMK2016] NGC 3625-DGSAT-2 LSB 11 21 22.91 +57 34 50.1           ~ 2 0
31 MATLAS-968 LSB 11 21 41.3 +57 24 39           ~ 3 0
32 MATLAS-980 LSB 11 22 12.4 +58 02 15           ~ 3 0
33 MATLAS-1020 LSB 11 24 48.0 +57 38 03           ~ 2 0
34 NGC 3669 GiG 11 25 26.8153992360 +57 43 16.464892008   12.9       ~ 69 0
35 [JMK2016] NGC 3669-DGSAT-3 LSB 11 26 38.78 +57 41 19.1           ~ 1 0
36 NAME Crater II Dwarf Galaxy G 11 49 14 -18 24.8           ~ 137 0
37 LEDA 3097710 LSB 12 39 55.10 -11 44 38.4           ~ 16 0
38 M 104 LIN 12 39 59.43185902 -11 37 22.9961800 9.51 9.55 8.00 8.05   ~ 1395 3
39 NAME Cen A Group GrG 13 20 33.9 -44 58 51           ~ 263 0
40 NAME Centaurus A Sy2 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4482 3
41 [CSC2014] CenA-MM-Dw1 G 13 30 14.26 -41 53 35.8           ~ 14 0
42 NGC 5443 Sy2 14 02 11.7987915648 +55 48 50.358916044   13.2       ~ 99 0
43 NAME M101 Group GrG 14 03 +54.3           ~ 102 1
44 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2913 2
45 [MVA2014] DF 5 LSB 14 04 28.1 +55 37 00           ~ 9 0
46 NGC 5473 GiG 14 04 43.2276404712 +54 53 33.499699368   12.5       ~ 145 0
47 NGC 5475 GiG 14 05 12.4060318056 +55 44 30.694106112   13.4       ~ 99 0
48 [MVA2014] DF 7 LSB 14 05 47.50 +55 07 57.3   20.4       ~ 12 0
49 NGC 5485 LIN 14 07 11.3594809920 +55 00 06.084219996 14.34 13.82 12.22     ~ 249 0
50 [MVA2014] DF 4 LSB 14 07 33.80 +54 42 39.2   18.8       ~ 14 0
51 [MVA2014] DF 6 LSB 14 08 18.70 +55 11 30.6   20.1       ~ 11 0
52 NGC 7184 AG? 22 02 39.8286792432 -20 48 45.720207216   11.98 11.20 10.62   ~ 140 0
53 NAME NGC 2683 Group GrG ~ ~           ~ 7 0
54 NAME Local Group GrG ~ ~           ~ 8385 0

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