2021ApJ...923..257K

Query : 2021ApJ...923..257K

2021ApJ...923..257K - Astrophys. J., 923, 257-257 (2021/December-3)

On the properties of spectroscopically confirmed ultra-diffuse galaxies across environments.

KADOWAKI J., ZARITSKY D., DONNERSTEIN R.L., SINGH P.R., KARUNAKARAN A. and SPEKKENS K.

Abstract (from CDS):

We present new redshift measurements for 19 candidate ultra-diffuse galaxies (UDGs) from the Systematically Measuring Ultra-Diffuse Galaxies (SMUDGes) survey after conducting a long-slit spectroscopic follow-up campaign on 23 candidates with the Large Binocular Telescope. We combine these results with redshift measurements from other sources for 29 SMUDGes and 20 non-SMUDGes candidate UDGs. Together, this sample yields 44 spectroscopically confirmed UDGs (re >= 1.5 kpc and µg(0) >= 24 mag arcsec–2 within uncertainties) and spans cluster and field environments, with all but one projected on the Coma cluster and environs. We find no statistically significant differences in the structural parameters of cluster and noncluster confirmed UDGs, although there are hints of differences among the axis ratio distributions. Similarly, we find no significant structural differences among those in locally dense or sparse environments. However, we observe a significant difference in color with respect to projected clustercentric radius, confirming trends observed previously in statistical UDG samples. This trend strengthens further when considering whether UDGs reside in either cluster or locally dense environments, suggesting starkly different star formation histories for UDGs residing in high- and low-density environments. Of the 16 large (re >= 3.5 kpc) UDGs in our sample, only one is a field galaxy that falls near the early-type galaxy red sequence. No other field UDGs found in low-density environments fall near the red sequence. This finding, in combination with our detection of Galaxy Evolution Explorer NUV flux in nearly half of the UDGs in sparse environments, suggests that field UDGs are a population of slowly evolving galaxies.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Low surface brightness galaxies - Spectroscopy - Galaxy environments - Galaxy stellar content - Galaxy evolution - Galaxy distances - Galaxy colors - Galaxy properties

VizieR on-line data: <Available at CDS (J/ApJ/923/257): table2.dat table3.dat table4.dat>

Nomenclature: Tables 1-3: SMDG JHHMMSSs+DDMMSS N=23+19+29. Table 4: [KZD2021] JHHMMSSs+DDMMSS N=20.

Simbad objects: 95

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Number of rows : 95
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 TYC 4492-1304-1 * 00 03 38.7885185784 +76 00 23.873768064   12.87 12.38     ~ 1 0
2 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
3 SMDG J0244338-001601 LSB 02 44 33.80 -00 16 01.0           ~ 5 0
4 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
6 2MASS J07185049+8501038 * 07 18 50.4329891496 +85 01 03.742928040   15.8       ~ 2 0
7 SMDG J0855549+312822 G? 08 55 54.9 +31 28 22           ~ 1 0
8 AGC 198563 LSB 09 14 40.2 +28 30 39           ~ 7 0
9 SDSS J093557.00+640045.9 G 09 35 57.0064454893 +64 00 45.935558010           ~ 2 0
10 [RGD2013] J095149.186+515858.834 G 09 51 49.1860 +51 58 58.834           ~ 2 0
11 [RGD2013] J095155.376+520002.527 G 09 51 55.3760 +52 00 02.527           ~ 2 0
12 [RGD2013] J095201.710+515956.072 G 09 52 01.7145730944 +51 59 56.123110176           ~ 2 0
13 NVSS J095203+515837 Rad 09 52 02.926 +51 58 38.42           ~ 3 1
14 [RGD2013] J095207.341+520126.105 G 09 52 07.3410 +52 01 26.105           ~ 2 0
15 SMDG J1006234+285218 LSB 10 06 23.37 +28 52 18.1           ~ 3 0
16 AGC 219369 LSB 11 03 51.4 +28 41 16           ~ 11 0
17 MATLAS-1222 LSB 12 16 08.8 +32 52 58           ~ 5 0
18 MATLAS-1247 LSB 12 17 37.7 +28 35 20           ~ 8 0
19 SMDG J1218390+285050 LSB 12 18 38.9722 +28 50 50.052           ~ 5 0
20 SDSS J122018.78+280131.3 LSB 12 20 18.788 +28 01 31.32           ~ 13 0
21 MATLAS-1356 LSB 12 21 08.5 +29 29 22           ~ 6 0
22 SMDG J1221577+281436 LSB 12 21 58.4 +28 14 34           ~ 16 0
23 SMDG J1223451+283550 LSB 12 23 45.0 +28 35 50           ~ 3 0
24 SMDG J1224082+280544 LSB 12 24 08.1409 +28 05 44.785           ~ 7 0
25 SMDG J1225185+270859 LSB 12 25 18.47 +27 08 58.8           ~ 5 0
26 LEDA 166137 GiC 12 25 28.5 +28 28 56   16.5       ~ 46 1
27 SMDG J1226040+241802 LSB 12 26 04.0 +24 18 03           ~ 5 0
28 LEDA 41311 LSB 12 30 23.8 +13 58 56   20       ~ 83 0
29 SMDG J1230359+273311 LSB 12 30 36.0 +27 33 12           ~ 5 0
30 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
31 SDSS J123132.82+232918.0 LSB 12 31 32.82648 +23 29 18.0168           ~ 10 0
32 SMDG J1237294+204442 LSB 12 37 29.3628 +20 44 42.085           ~ 4 0
33 SMDG J1238305+274355 G 12 38 30.4724 +27 43 54.597           ~ 3 0
34 SMDG J1239050+323016 LSB 12 39 05.1 +32 30 17           ~ 8 0
35 SDSS J124001.86+261916.2 LSB 12 40 01.864 +26 19 16.24           ~ 33 0
36 SMDG J1240530+321655 LSB 12 40 53.0 +32 16 56           ~ 13 0
37 SMDG J1241425+273352 LSB 12 41 42.51 +27 33 52.4           ~ 3 0
38 SMDG J1242314+315809 LSB 12 42 31.4 +31 58 09           ~ 13 0
39 SMDG J1245277+181801 LSB 12 45 27.5867 +18 18 02.703           ~ 4 0
40 SMDG J1247233+180140 LSB 12 47 23.0933 +18 01 42.297           ~ 7 0
41 SMDG J1248019+261236 LSB 12 48 02.0 +26 12 37           ~ 5 0
42 SMDG J1251014+274753 LSB 12 51 01.3513 +27 47 52.918           ~ 5 0
43 SMDG J1253152+274115 LSB 12 53 15.1 +27 41 15           ~ 14 0
44 SMDG J1253571+291500 LSB 12 53 57.1 +29 15 00           ~ 6 0
45 LEDA 44055 LSB 12 55 41.0 +19 12 34           ~ 44 0
46 SMDG J1255554+272736 LSB 12 55 55.40 +27 27 35.9     20.80 20.69   ~ 13 0
47 SDSS J125556.63+273018.3 LSB 12 55 56.631 +27 30 18.31     20.06 20.06   ~ 7 0
48 [KZD2021] J1256054+273018 LSB 12 56 05.38 +27 30 18.2       22.2   ~ 4 0
49 [ARF2020] COMA 41 3629 LSB 12 56 14.15 +27 33 19.7   21.22 20.11 20.10   ~ 6 0
50 SDSS J125635.20+273506.4 LSB 12 56 35.190 +27 35 06.56     19.77 19.60   ~ 7 0
51 SMDG J1257017+282325 LSB 12 57 01.687 +28 23 24.73     19.14 18.50   ~ 31 0
52 SDSS J125801.11+271126.4 LSB 12 58 01.119 +27 11 26.47   20.66 20.02 19.68   ~ 19 0
53 [IBG2003] J125904+281423 LSB 12 59 04.065 +28 14 22.50           ~ 6 0
54 [ARF2020] COMA 23 4046 LSB 12 59 04.178 +28 15 07.62     20.29 20.16   ~ 7 0
55 [ARF2020] COMA 24 4030 LSB 12 59 09.528 +29 00 24.47     20.28 19.98   ~ 18 0
56 [ARF2020] COMA 22 5709 LSB 12 59 15.33 +27 45 14.8   22.12 20.97 20.82   ~ 5 0
57 SMDG J1259238+274727 LSB 12 59 23.85 +27 47 27.2   21.16 20.23 19.82   ~ 15 0
58 GMP 3418 LSB 12 59 29.89 +27 43 03.1   20.88 20.13 19.14 19.17 ~ 17 0
59 SMDG J1259304+274451 LSB 12 59 30.46 +27 44 50.4   20.82 19.79 19.60   ~ 17 0
60 [ARF2020] COMA 22 5653 LSB 12 59 37.234 +27 48 15.12   21.59 20.95 20.61   ~ 7 0
61 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
62 SMDG J1259487+274639 LSB 12 59 48.72 +27 46 39.0   21.88 20.46 20.07   ~ 18 0
63 [ARF2020] COMA 22 4659 LSB 12 59 56.17 +27 48 12.8   21.66 20.56 20.30   ~ 9 0
64 [ARF2020] COMA 22 2948 LSB 13 00 00.41 +27 48 19.7   20.96 19.79 19.56   ~ 7 0
65 GMP 2962 LSB 13 00 05.390 +27 53 33.31   20.63 19.57 19.25   ~ 12 0
66 [ARF2020] COMA 22 4429 LSB 13 00 11.71 +27 49 41.0   21.28 20.45 20.08   ~ 10 0
67 [ARF2020] COMA 22 6460 LSB 13 00 12.10 +27 48 23.5   22.14 21.26 21.22   ~ 6 0
68 SMDG J1300204+274924 LSB 13 00 20.37 +27 49 24.0   21.05 20.04 19.78   ~ 9 0
69 GMP 2748 LSB 13 00 20.61 +27 47 12.3   20.15 19.20 18.76   ~ 27 0
70 GMP 2710 LSB 13 00 23.148 +27 52 24.85     18.77 18.43   ~ 5 0
71 [ARF2020] COMA 12 1922 LSB 13 00 24.336 +27 51 56.56     19.25 19.00   ~ 4 0
72 GMP 2673 GiC 13 00 26.234 +27 27 34.91     17.39 17.21   ~ 10 0
73 [ARF2020] COMA 22 3294 LSB 13 00 28.337 +27 48 20.40   20.88 19.97 19.62   ~ 7 0
74 GMP 2552 GiC 13 00 38.630 +27 28 35.27     18.27 17.92   ~ 8 0
75 SMDG J1300580+265835 LSB 13 00 57.996 +26 58 34.72     19.37 18.43   ~ 145 0
76 SMDG J1301005+210355 LSB 13 01 00.3955 +21 03 56.261           ~ 6 0
77 [ARF2020] COMA 10 4551 LSB 13 01 05.30 +27 09 35.1     20.51 19.75   ~ 11 0
78 SMDG J1301303+282229 LSB 13 01 30.341 +28 22 28.55     20.25 20.20   ~ 21 0
79 SMDG J1301582+275012 LSB 13 01 58.205 +27 50 11.91     19.89 19.45   ~ 61 0
80 SMDG J1302165+285717 LSB 13 02 16.601 +28 57 16.76     20.06 19.81   ~ 17 0
81 SMDG J1302334+283452 LSB 13 02 33.4 +28 34 51           ~ 12 0
82 IC 4107 LSB 13 02 41.87 +21 59 50.6           ~ 28 0
83 LEDA 2832125 LSB 13 04 53.55 +27 42 53.0           ~ 7 0
84 SMDG J1306148+275941 LSB 13 06 14.7766 +27 59 41.268           ~ 8 0
85 SMDG J1312222+312320 LSB 13 12 22.25 +31 23 20.2           ~ 5 0
86 AGC 239104 LSB 13 13 18.8269 +31 24 52.046           ~ 10 0
87 SDSS J131542.61+311848.0 LSB 13 15 42.618 +31 18 48.06           ~ 9 0
88 SMDG J1335454+281226 LSB 13 35 45.3625 +28 12 26.013           ~ 3 0
89 UCAC4 661-071039 * 18 59 59.4996037584 +42 01 06.504572316   12.823 12.286 12.159   F7V 3 0
90 2MASS J19000143+4158210 * 19 00 01.4361521328 +41 58 20.951776776           ~ 10 0
91 UCAC4 661-071052 * 19 00 05.8494465120 +42 00 08.385930684   15.433 14.874 14.634   ~ 2 0
92 Gaia DR3 2104090596978859008 * 19 00 07.1472867528 +41 59 54.987972072           ~ 2 0
93 TYC 3128-104-1 V* 19 00 10.4964848064 +42 00 19.966731588   13.33 11.84     ~ 2 0
94 Gaia DR3 6671185199785063680 * 19 51 54.8909965800 -47 59 59.177326092           ~ 2 0
95 TYC 4462-707-1 * 21 39 48.0696432504 +67 59 00.567325608   13.44 10.98     ~ 1 0

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