2018MNRAS.479.3308A

Query : 2018MNRAS.479.3308A

2018MNRAS.479.3308A - Mon. Not. R. Astron. Soc., 479, 3308-3318 (2018/September-3)

Origins of ultradiffuse galaxies in the Coma cluster - I. Constraints from velocity phase space.

ALABI A., FERRE-MATEU A., ROMANOWSKY A.J., BRODIE J., FORBES D.A., WASSERMAN A., BELLSTEDT S., MARTIN-NAVARRO I., PANDYA V., STONE M.B. and OKABE N.

Abstract (from CDS):

We use Keck/DEIMOS spectroscopy to confirm the cluster membership of 16 ultradiffuse galaxies (UDGs) in the Coma cluster, bringing the total number of spectroscopically confirmed UDGs from the Yagi et al. (Y16) catalogue to 25. We also identify a new cluster background UDG, confirming that most (∼95 per cent) of the UDGs in the Y16 catalogue belong to the Coma cluster. In this pilot study of Coma UDGs in velocity phase space, we find evidence of a diverse origin for Coma cluster UDGs, similar to normal dwarf galaxies. Some UDGs in our sample are consistent with being late infalls into the cluster environment, while some may have been in the cluster for >=8 Gyr. The late infallen UDGs have higher absolute relative line-of-sight velocities, bluer optical colours, and within the projected cluster core, are smaller in size, compared to the early infalls. The early infall UDGs, which may also have formed in situ, have been in the cluster environment for as long as the most luminous galaxies in the Coma cluster, and they may be failed galaxies that experienced star formation quenching at earlier epochs.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: dwarf - galaxies: evolution - galaxies: interactions - galaxies: kinematics and dynamics

Simbad objects: 71

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Number of rows : 71
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 Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
2 SMDG J1255554+272736 LSB 12 55 55.40 +27 27 35.9     20.80 20.69   ~ 13 0
3 SDSS J125556.63+273018.3 LSB 12 55 56.631 +27 30 18.31     20.06 20.06   ~ 7 0
4 SMDG J1255591+272554 LSB 12 55 59.15 +27 25 53.4     20.69 20.67   ~ 6 0
5 SDSS J125603.21+273213.4 LSB 12 56 03.203 +27 32 13.47       21.4   ~ 2 0
6 [KZD2021] J1256054+273018 LSB 12 56 05.38 +27 30 18.2       22.2   ~ 4 0
7 SDSS J125608.14+272906.5 LSB 12 56 08.149 +27 29 06.55     21.35 21.29   ~ 3 0
8 [ARF2020] COMA 41 7266 LSB 12 56 09.07 +27 34 16.2     21.60 21.53   ~ 4 0
9 SDSS J125610.30+273104.5 LSB 12 56 10.302 +27 31 04.49       22.7   ~ 2 0
10 SMDG J1256129+273250 LSB 12 56 12.95 +27 32 50.3   21.67 21.15 21.18   ~ 13 0
11 [ARF2020] COMA 41 3629 LSB 12 56 14.15 +27 33 19.7   21.22 20.11 20.10   ~ 6 0
12 SDSS J125620.09+273623.7 LSB 12 56 20.097 +27 36 23.75       20.7   ~ 1 0
13 GMP 5467 LSB 12 56 23.189 +27 33 58.14       19.2   ~ 3 0
14 ECO 1904 LSB 12 56 23.35808 +27 32 38.5820     17.57 17.23   ~ 10 0
15 LEDA 126895 LSB 12 56 24.452 +27 32 18.33     18.22 18.19   ~ 6 0
16 [ARF2020] COMA 41 5582 LSB 12 56 28.29 +27 36 11.5     20.92 20.76   ~ 4 0
17 SMDG J1256284+273707 LSB 12 56 28.41 +27 37 06.3     20.18 20.06   ~ 12 0
18 GMP 5357 LSB 12 56 34.813 +27 37 38.73     18.68 18.45   ~ 4 0
19 SDSS J125635.20+273506.4 LSB 12 56 35.190 +27 35 06.56     19.77 19.60   ~ 7 0
20 LEDA 126892 LSB 12 56 38.44505 +27 34 15.3961     17.54 17.46   ~ 15 0
21 NGC 4839 BiC 12 57 24.3563164776 +27 29 52.203087132 13.56 13.02 12.06     ~ 482 3
22 SDSS J125801.11+271126.4 LSB 12 58 01.119 +27 11 26.47   20.66 20.02 19.68   ~ 19 0
23 [ARF2020] COMA 22 5709 LSB 12 59 15.33 +27 45 14.8   22.12 20.97 20.82   ~ 5 0
24 [ARF2020] COMA 22 8988 LSB 12 59 20.25 +27 46 33.3   23.73 22.68 22.39   ~ 3 0
25 GMP 3519 LSB 12 59 22.94 +27 43 24.5     18.17 18.03   ~ 6 0
26 SMDG J1259238+274727 LSB 12 59 23.85 +27 47 27.2   21.16 20.23 19.82   ~ 15 0
27 2MASX J12592491+2744198 LSB 12 59 24.9342998952 +27 44 19.850059932 16.65 16.403 15.23 14.872 14.213 ~ 69 0
28 [APS2006] 11867 LSB 12 59 24.95 +27 45 29.0     21.28 21.26   ~ 3 0
29 GMP 3418 LSB 12 59 29.89 +27 43 03.1   20.88 20.13 19.14 19.17 ~ 17 0
30 SMDG J1259304+274451 LSB 12 59 30.46 +27 44 50.4   20.82 19.79 19.60   ~ 17 0
31 NGC 4874 LIN 12 59 35.7093764280 +27 57 33.293892204 13.01 13.7 12.71 12.27 11.386 ~ 814 3
32 2MASX J12593780+2746367 LSB 12 59 37.800 +27 46 36.80 17.63 17.666 15.83 15.45 15.705 ~ 29 0
33 SDSS J125939.09+274557.5 LSB 12 59 39.096 +27 45 57.52     20.70 20.45   ~ 4 0
34 SDSS J125942.65+274658.8 LSB 12 59 42.652 +27 46 58.89     19.79 19.50   ~ 3 0
35 SDSS J125944.10+274607.5 LSB 12 59 44.105 +27 46 07.59     19.35 19.21   ~ 3 0
36 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
37 SDSS J125948.34+274547.6 LSB 12 59 48.340 +27 45 47.65       21.2   ~ 5 0
38 SMDG J1259487+274639 LSB 12 59 48.72 +27 46 39.0   21.88 20.46 20.07   ~ 18 0
39 2MASX J12595617+2744473 LSB 12 59 56.1192738432 +27 44 46.724602092 17.15 17.331 16.15 15.87 16.04 ~ 37 0
40 [ARF2020] COMA 22 4659 LSB 12 59 56.17 +27 48 12.8   21.66 20.56 20.30   ~ 9 0
41 GMP 3037 LSB 12 59 59.35 +27 47 55.5 21.279 20.80 18.92 18.47 18.25 ~ 6 0
42 [ARF2020] COMA 22 2948 LSB 13 00 00.41 +27 48 19.7   20.96 19.79 19.56   ~ 7 0
43 LEDA 44704 AG? 13 00 06.2918094240 +27 46 32.785530024 16.51 16.154 15.09 14.631 13.973 ~ 69 0
44 LEDA 126767 LSB 13 00 08.05642 +27 46 23.9143 17.45 17.675 16.57 16.45 16.398 ~ 36 0
45 NGC 4889 EmG 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 742 1
46 [ARF2020] COMA 22 7611 LSB 13 00 10.19 +27 49 19.8   22.7 21.76 21.38   ~ 3 0
47 [ARF2020] COMA 22 4429 LSB 13 00 11.71 +27 49 41.0   21.28 20.45 20.08   ~ 10 0
48 [ARF2020] COMA 22 6460 LSB 13 00 12.10 +27 48 23.5   22.14 21.26 21.22   ~ 6 0
49 CAIRNS J130017.56+274703.7 LSB 13 00 17.55731 +27 47 03.9352 18.34 18.602 16.95 16.57 16.346 ~ 31 0
50 SMDG J1300204+274924 LSB 13 00 20.37 +27 49 24.0   21.05 20.04 19.78   ~ 9 0
51 GMP 2749 LSB 13 00 20.48 +27 48 17.0 19.587 19.452 18.16 17.86 17.538 ~ 8 0
52 GMP 2748 LSB 13 00 20.61 +27 47 12.3   20.15 19.20 18.76   ~ 27 0
53 [ARF2020] COMA 22 3252 LSB 13 00 23.20 +27 48 17.1   21.04 19.95 19.67   ~ 10 0
54 SMDG J1300580+265835 LSB 13 00 57.996 +26 58 34.72     19.37 18.43   ~ 145 0
55 GMP 2304 LSB 13 01 03.690 +26 57 17.22       19.3   ~ 2 0
56 GMP 2292 LSB 13 01 04.7525901216 +27 00 35.034156324     17.97 17.68   ~ 4 0
57 [ARF2020] COMA 10 4551 LSB 13 01 05.30 +27 09 35.1     20.51 19.75   ~ 11 0
58 SDSS J130108.49+270817.7 LSB 13 01 08.500 +27 08 17.78     20.10 19.90   ~ 2 0
59 SDSS J130108.86+270006.3 LSB 13 01 08.864 +27 00 06.35       22.7   ~ 1 0
60 SDSS J130109.18+271110.3 LSB 13 01 09.181 +27 11 10.38       21.0   ~ 1 0
61 SDSS J130109.88+265839.2 LSB 13 01 09.882 +26 58 39.24       21.3   ~ 1 0
62 GMP 2238 LSB 13 01 10.3746430656 +26 56 36.430101672       18.3   ~ 2 0
63 SDSS J130111.71+270136.9 LSB 13 01 11.711 +27 01 36.93     21.21 21.00   ~ 2 0
64 SDSS J130113.58+270158.8 LSB 13 01 13.582 +27 01 58.83       22.0   ~ 1 0
65 SDSS J130115.54+270348.0 LSB 13 01 15.545 +27 03 48.01       19.9   ~ 1 0
66 SDSS J130117.24+271104.5 LSB 13 01 17.2371436848 +27 11 04.343579664       21.4   ~ 1 0
67 SMDG J1301191+270315 LSB 13 01 19.090 +27 03 15.21     20.11 19.69   ~ 17 0
68 SDSS J130124.47+271129.5 LSB 13 01 24.480 +27 11 29.54       22.5   ~ 1 0
69 SMDG J1301303+282229 LSB 13 01 30.341 +28 22 28.55     20.25 20.20   ~ 21 0
70 SMDG J1301582+275012 LSB 13 01 58.205 +27 50 11.91     19.89 19.45   ~ 61 0
71 SMDG J1302165+285717 LSB 13 02 16.601 +28 57 16.76     20.06 19.81   ~ 17 0

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