2017ApJ...842..133L

Query : 2017ApJ...842..133L

2017ApJ...842..133L - Astrophys. J., 842, 133-133 (2017/June-3)

(Almost) dark galaxies in the ALFALFA survey: isolated H I-bearing ultra-diffuse galaxies.

LEISMAN L., HAYNES M.P., JANOWIECKI S., HALLENBECK G., JOZSA G., GIOVANELLI R., ADAMS E.A.K., BERNAL NEIRA D., CANNON J.M., JANESH W.F., RHODE K.L. and SALZER J.J.

Abstract (from CDS):

We present a sample of 115 very low optical surface brightness, highly extended, H i-rich galaxies carefully selected from the ALFALFA survey that have similar optical absolute magnitudes, surface brightnesses, and radii to recently discovered "ultra-diffuse" galaxies (UDGs). However, these systems are bluer and have more irregular morphologies than other UDGs, are isolated, and contain significant reservoirs of H i. We find that while these sources have normal star formation rates for H i-selected galaxies of similar stellar mass, they have very low star formation efficiencies. We further present deep optical and H i-synthesis follow-up imaging of three of these H i-bearing ultra-diffuse sources. We measure H I diameters extending to ∼40 kpc, but note that while all three sources have large H I diameters for their stellar mass, they are consistent with the H I mass-H I radius relation. We further analyze the H I velocity widths and rotation velocities for the unresolved and resolved sources, respectively, and find that the sources appear to inhabit halos of dwarf galaxies. We estimate spin parameters, and suggest that these sources may exist in high spin parameter halos, and as such may be potential H i-rich progenitors to the ultra-diffuse galaxies observed in cluster environments.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: evolution - galaxies: star formation - radio lines: galaxies - radio lines: galaxies

VizieR on-line data: <Available at CDS (J/ApJ/842/133): table1.dat>

Simbad objects: 125

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Number of rows : 125
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 AGC 103435 LSB 00 15 20.679 +01 04 36.99           ~ 19 0
2 AGC 102907 LSB 00 17 46.3 +28 44 58           ~ 5 0
3 AGC 103796 LSB 00 20 39.6 +06 57 57           ~ 4 0
4 AGC 103797 LSB 00 24 07.4 +05 56 30           ~ 4 0
5 AGC 102791 LSB 00 40 57.7 +31 54 23           ~ 6 0
6 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
7 AGC 103857 LSB 00 59 13.6 +06 16 24           ~ 4 0
8 AGC 748801 LSB 01 00 52.7 +16 04 57           ~ 6 0
9 AGC 113790 LSB 01 13 02.158 +27 38 11.44           ~ 10 0
10 AGC 114882 LSB 01 13 25.5 +06 20 38           ~ 4 0
11 ACO 168 ClG 01 15 07.58 +00 19 10.8           ~ 379 2
12 AGC 114905 LSB 01 25 18.5 +07 21 37           ~ 30 0
13 AGC 748816 LSB 01 27 56.602 +14 30 07.31           ~ 7 0
14 AGC 114943 LSB 01 47 06.6 +07 19 52           ~ 4 0
15 AGC 113949 LSB 01 49 38.6 +30 40 51           ~ 8 0
16 LEDA 166859 LSB 01 50 00.4717 +28 54 49.390           ~ 13 0
17 AGC 114607 LSB 01 58 07.1 +00 52 41           ~ 4 0
18 AGC 122791 LSB 02 03 28.8 +26 41 50           ~ 6 0
19 AGC 122966 LSB 02 09 29.0 +31 51 10           ~ 14 0
20 AGC 123863 LSB 02 21 32.8 +23 11 54           ~ 3 0
21 MCG+00-07-077 EmG 02 40 23.09 +01 13 45.3   16.1   15.6 16.0 ~ 67 0
22 LEDA 135667 LSB 02 49 08.25946 +01 57 55.8921   16.9   16.3 17.1 ~ 11 0
23 AGC 123953 LSB 02 56 03.5 +01 58 11           ~ 4 0
24 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
25 AGC 749251 LSB 07 35 00.324 +26 39 32.04           ~ 9 0
26 AGC 174593 LSB 07 42 31.8 +10 19 17           ~ 6 0
27 AGC 749376 LSB 07 58 08.916 +25 49 50.40           ~ 6 0
28 AGC 188768 LSB 08 28 37.908 +14 58 24.00           ~ 6 0
29 AGC 749388 LSB 08 33 11.304 +24 34 19.01           ~ 8 0
30 AGC 749279 LSB 08 35 08.154 +26 52 55.22           ~ 6 0
31 SDSS J084703.62+001001.1 LSB 08 47 03.624 +00 10 01.17           ~ 11 0
32 AGC 189167 LSB 08 54 10.9 +28 58 04           ~ 6 0
33 AGC 182467 LSB 08 57 05.440 +09 07 05.92           ~ 7 0
34 AGC 198563 LSB 09 14 40.2 +28 30 39           ~ 7 0
35 SDSS J091601.09+263901.4 LSB 09 16 01.091 +26 39 01.45           ~ 13 0
36 SDSS J091641.46+062606.3 LSB 09 16 41.462 +06 26 06.34           ~ 8 0
37 AGC 193800 LSB 09 17 44.802 +10 30 15.70           ~ 6 0
38 AGC 749401 LSB 09 24 20.521 +25 39 41.74           ~ 7 0
39 AGC 198540 LSB 09 25 13.9 +03 18 47           ~ 5 0
40 ALFALFA 5-27 LSB 09 40 13.251 +09 55 28.14           ~ 8 0
41 SDSS J094807.59+161538.0 BiC 09 48 07.594 +16 15 38.00           ~ 6 0
42 AGC 193841 LSB 09 56 26.988 +10 54 20.01           ~ 7 0
43 AGC 193798 LSB 09 59 27.695 +16 00 24.56           ~ 5 0
44 SDSS J100239.05+120924.2 LSB 10 02 39.05117 +12 09 24.1970           ~ 7 0
45 AGC 208764 LSB 10 27 16.6 +20 12 55           ~ 4 0
46 AGC 208759 LSB 10 29 07.7 +20 14 48           ~ 4 0
47 AGC 208769 LSB 10 49 53.5 +21 38 18           ~ 6 0
48 AGC 749425 LSB 11 06 39.221 +24 02 00.65           ~ 7 0
49 SDSS J111207.41+123759.7 LSB 11 12 07.412 +12 37 59.76           ~ 7 0
50 AGC 215283 LSB 11 15 18.413 +12 53 54.81           ~ 6 0
51 AGC 749196 LSB 11 16 13.996 +27 10 50.11           ~ 5 0
52 AGC 219672 LSB 11 31 31.7 +21 32 28           ~ 4 0
53 AGC 219487 LSB 11 37 44.8 +28 11 45           ~ 4 0
54 SDSS J113939.67+193516.8 LSB 11 39 40.17 +19 35 20.0           ~ 9 0
55 AGC 219533 LSB 11 39 56.8 +16 43 17           ~ 13 0
56 SDSS J114445.74+114856.2 LSB 11 44 45.750 +11 48 56.23           ~ 8 0
57 AGC 219493 LSB 11 50 34.3 +29 39 32           ~ 4 0
58 AGC 219247 LSB 11 51 06.312 +07 23 59.78           ~ 6 0
59 AGC 215218 LSB 11 58 15.6 +15 55 32           ~ 4 0
60 AGC 229376 LSB 12 06 03.1 +20 54 12           ~ 5 0
61 LEDA 39936 LSB 12 21 24.835 +09 37 12.93   21       ~ 15 0
62 AGC 227957 LSB 12 22 55.930 +06 09 18.86           ~ 6 0
63 LEDA 40369 LSB 12 24 25.611 +07 07 52.09   19       ~ 16 0
64 LEDA 41286 LSB 12 30 16.017 +13 18 27.13           ~ 23 0
65 LEDA 41311 LSB 12 30 23.8 +13 58 56   20       ~ 83 0
66 NAME Coma P G 12 32 10.30 +20 25 24.0           ~ 38 0
67 AGC 226136 LSB 12 32 24.683 +10 29 05.11           ~ 7 0
68 AGC 229110 LSB 12 46 08.7 +28 45 03           ~ 8 0
69 SDSS J124933.70+090611.2 BiC 12 49 33.701 +09 06 11.26           ~ 8 0
70 2dFGRS TGN393Z168 LSB 12 54 32.322 +01 06 32.27   20.3   17.777   ~ 9 0
71 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
72 SMDG J1300580+265835 LSB 13 00 57.996 +26 58 34.72     19.37 18.43   ~ 145 0
73 SMDG J1301582+275012 LSB 13 01 58.205 +27 50 11.91     19.89 19.45   ~ 61 0
74 AGC 233778 LSB 13 04 34.103 +10 31 42.81           ~ 8 0
75 AGC 233610 LSB 13 08 17.238 +11 48 23.27           ~ 7 0
76 AGC 238692 LSB 13 26 36.981 +05 44 36.79           ~ 6 0
77 AGC 239040 LSB 13 33 55.9 +28 10 14           ~ 6 0
78 SDSS J133937.42+065949.2 LSB 13 39 37.428 +06 59 49.20           ~ 10 0
79 LEDA 5808058 LSB 13 45 30.276 +01 15 20.04           ~ 11 0
80 AGC 233836 LSB 13 47 11.576 +08 00 08.72           ~ 7 0
81 LEDA 2806939 LSB 13 47 33.7 +20 26 52           ~ 8 0
82 AGC 239062 LSB 13 48 11.8 +16 25 24           ~ 4 0
83 AGC 238636 LSB 13 53 54.133 +09 30 16.59           ~ 7 0
84 RESOLVE rs1460 LSB 13 53 59.892 +03 13 55.73           ~ 7 0
85 LEDA 2801012 LSB 13 57 45.813 +07 50 14.46           ~ 14 0
86 AGC 243835 LSB 14 02 08.117 +11 07 02.63           ~ 6 0
87 AGC 248887 LSB 14 09 12.010 +13 18 53.25           ~ 6 0
88 SDSS J141158.14+272935.6 LSB 14 11 58.142 +27 29 35.65           ~ 8 0
89 AGC 249569 LSB 14 15 01.7 +21 11 51           ~ 4 0
90 AGC 248937 LSB 14 25 54.586 +12 55 08.27           ~ 7 0
91 AGC 249428 LSB 14 31 11.2 +00 57 07           ~ 4 0
92 SDSS J143353.23+012853.8 LSB 14 33 53.28864 +01 29 04.6860   17.4       ~ 42 0
93 AGC 248981 LSB 14 42 06.572 +12 29 34.34           ~ 6 0
94 AGC 248945 LSB 14 46 59.552 +13 10 11.02           ~ 11 0
95 AGC 749488 LSB 14 53 12.729 +25 17 57.77           ~ 5 0
96 AGC 249542 LSB 14 59 49.0 +19 23 00           ~ 4 0
97 AGC 749343 LSB 15 07 57.765 +25 49 31.06           ~ 6 0
98 AGC 258471 LSB 15 22 38.249 +05 49 47.81           ~ 7 0
99 SDSS J153434.67+160029.8 LSB 15 34 34.674 +16 00 29.86           ~ 8 0
100 AGC 253921 LSB 15 50 52.294 +11 12 59.56           ~ 7 0
101 SDSS J155158.13+112501.1 LSB 15 51 58.135 +11 25 01.13           ~ 7 0
102 AGC 749352 LSB 15 52 22.6 +26 29 59           ~ 5 0
103 AGC 258576 LSB 15 53 32.2 +00 23 42           ~ 6 0
104 AGC 258600 LSB 15 56 00.9 +03 37 06           ~ 4 0
105 AGC 268200 LSB 16 12 44.855 +05 46 04.76           ~ 5 0
106 AGC 749366 LSB 16 23 16.536 +25 50 45.65           ~ 7 0
107 AGC 749368 LSB 16 32 24.422 +25 48 01.29           ~ 6 0
108 AGC 310858 LSB 21 50 40.3 +28 35 27           ~ 6 0
109 AGC 748702 LSB 22 18 47.0 +15 42 00           ~ 5 0
110 AGC 321215 LSB 22 29 31.6 +26 58 17           ~ 6 0
111 AGC 322320 LSB 22 45 38.9 +07 39 53           ~ 4 0
112 AGC 321442 LSB 22 53 38.6 +31 59 46           ~ 5 0
113 AGC 322019 LSB 22 58 26.9 +01 50 59           ~ 7 0
114 AGC 333357 LSB 23 03 54.5 +30 31 01           ~ 5 0
115 AGC 748738 LSB 23 04 51.946 +14 01 06.46           ~ 12 0
116 AGC 333366 LSB 23 12 30.8 +29 52 40           ~ 5 0
117 AGC 333375 LSB 23 17 44.5 +30 36 45           ~ 5 0
118 Z 454-39 G 23 19 30.4940411496 +16 04 29.240723064   15.6       ~ 77 0
119 AGC 334315 LSB 23 20 11.8 +22 24 07           ~ 12 0
120 AGC 748765 LSB 23 23 43.537 +14 25 40.47           ~ 9 0
121 AGC 333549 LSB 23 32 34.3 +29 40 04           ~ 6 0
122 AGC 333298 LSB 23 35 56.2 +25 18 34           ~ 6 0
123 AGC 333410 LSB 23 37 12.0 +31 27 18           ~ 5 0
124 AGC 333214 LSB 23 51 37.9 +27 28 10           ~ 7 0
125 LEDA 2807046 LSB 23 58 29.939 +30 40 18.13           ~ 9 0

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