2021ApJ...913...53P

Query : 2021ApJ...913...53P

2021ApJ...913...53P - Astrophys. J., 913, 53-53 (2021/May-3)

The gas content and stripping of Local Group dwarf galaxies.

PUTMAN M.E., ZHENG Y., PRICE-WHELAN A.M., GRCEVICH J., JOHNSON A.C., TOLLERUD E. and PEEK J.E.G.

Abstract (from CDS):

The gas content of the complete compilation of Local Group dwarf galaxies (119 within 2 Mpc) is presented using H I survey data. Within the virial radius of the Milky Way (224 kpc here), 53 of 55 dwarf galaxies are devoid of gas to limits of M_H I_ < 104 M☉. Within the virial radius of M31 (266 kpc), 27 of 30 dwarf galaxies are devoid of gas (with limits typically <105 M☉). Beyond the virial radii of the Milky Way and M31, the majority of the dwarf galaxies have detected H I gas and H I masses higher than the limits. When the relationship between gas content and distance is investigated using a Local Group virial radius, more of the nondetected dwarf galaxies are within this radius (85 ± 1 of the 93 nondetected dwarf galaxies) than within the virial radii of the Milky Way and M31. Using the Gaia proper-motion measurements available for 38 dwarf galaxies, the minimum gas density required to completely strip them of gas is calculated. Halo densities between 10–5 and 5 x 10–4 cm–3 are typically required for instantaneous stripping at perigalacticon. When compared to halo density with radius expectations from simulations and observations, 80% of the dwarf galaxies with proper motions are consistent with being stripped by ram pressure at Milky Way pericenter. The results suggest that a diffuse gaseous galactic halo medium is important in quenching dwarf galaxies, and that a Local Group medium also potentially plays a role.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Local Group - Dwarf galaxies - Galaxy quenching - Circumgalactic medium - Interstellar medium - Intergalactic medium - Andromeda Galaxy - Milky Way Galaxy

VizieR on-line data: <Available at CDS (J/ApJ/913/53): table1.dat table2.dat table3.dat>

Simbad objects: 123

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Number of rows : 123
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 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 NAME Andromeda XVIII G 00 02 14.5 +45 05 20     16.0     ~ 129 0
3 NAME Tuc IV G 00 02.9 -60 51           ~ 90 0
4 NAME Andromeda XX G 00 07 30.70 +35 07 56.4     18.2     ~ 77 0
5 ESO 410-5 LSB 00 15 31.21 -32 10 49.9   15.32 14.9 14.58   ~ 120 1
6 And XIX G 00 19 32.10 +35 02 37.1     15.6     ~ 168 0
7 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
8 NAME Andromeda XXVI G 00 23 45.6 +47 54 58     17.3     ~ 76 0
9 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 257 0
10 NAME Andromeda XXV G 00 30 08.9 +46 51 07     14.8     ~ 120 0
11 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
12 NAME Andromeda III G 00 35 33.8 +36 29 52     14.4     ~ 309 0
13 NAME Cassiopeia III G 00 35 59.4 +51 33 35           ~ 59 0
14 NAME Andromeda XXX G 00 36 34.90 +49 38 48.0           ~ 59 0
15 NAME Andromeda XVII G 00 37 07.0 +44 19 20     15.8     ~ 101 0
16 NAME Andromeda XXVII G 00 37 27.1 +45 23 13     16.7     ~ 82 0
17 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
18 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
19 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
20 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
21 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
22 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 130 0
23 NAME Andromeda XII G 00 47 27.0 +34 22 29     18.3     ~ 124 0
24 NAME Andromeda XIV G 00 51 35.0 +29 41 49     15.9     ~ 132 0
25 NAME Andromeda XIII G 00 51 51.0 +33 00 16     18.1     ~ 128 0
26 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
27 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 176 1
28 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 149 0
29 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
30 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
31 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
32 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 125 1
33 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
34 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 123 0
35 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
36 NAME Cetus II G 01 17.9 -17 25           ~ 56 0
37 NAME Andromeda XXIV G 01 18 30.0 +46 21 58     16.3     ~ 64 0
38 NAME Andromeda XXII G 01 27 40.0 +28 05 25     18.0     ~ 95 0
39 NAME Andromeda XXIII G 01 29 21.8 +38 43 08     14.2     ~ 88 0
40 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
41 NAME Cetus III Dwarf Galaxy LSB 02 05 19.40 -04 16 12.0           ~ 32 0
42 NAME Tri II G 02 13 17.40 +36 10 42.4           ~ 164 0
43 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 299 0
44 NAME Eri III G 02 22 45.480 -52 17 04.92           ~ 79 0
45 [LPS2017] DES J0225+0304 G? 02 25 42.40 +03 04 10.1           ~ 23 0
46 NAME Hydrus I G 02 29 33.4 -79 18 32           ~ 80 0
47 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
48 NAME Hor I G 02 55 31.7 -54 07 08           ~ 169 0
49 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
50 NAME Andromeda XXXIII G 03 01 23.6 +40 59 18           ~ 43 0
51 NAME Horologium II G 03 16 32.1 -50 01 05           ~ 76 0
52 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
53 NAME Eridanus II G 03 44 21.1 -43 32 00           ~ 216 0
54 NAME Reticulum III G 03 45.4 -60 27           ~ 67 0
55 NAME Pic I G 04 43 47.4 -50 16 59           ~ 58 0
56 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
57 NAME Col I G 05 31.4 -28 02           ~ 60 0
58 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
59 NAME Pic II G 06 44 43 -59 53.8           ~ 33 0
60 [BCK2005] HIZSS003B GiP 07 00 24.5446 -04 13 12.463           ~ 8 0
61 LEDA 2807061 G 07 00 29.3 -04 12 30           ~ 43 1
62 NAME Carina II Dwarf Galaxy G 07 36 25.6 -57 59 57           ~ 86 0
63 NAME Car III Dwarf Galaxy G 07 38 31.2 -57 53 59           ~ 81 0
64 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
65 Z 264-88 AG? 09 16 02.0195908968 +52 50 42.051257412   14.0 13.2     ~ 141 0
66 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
67 NAME Antlia II Dwarf Galaxy G 09 35 32.8 -36 46 02           ~ 109 0
68 NAME Antlia B G 09 48 56.08 -25 59 24.0           ~ 41 0
69 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
70 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
71 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
72 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 221 1
73 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
74 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
75 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
76 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
77 NAME Leo P BiC 10 21 45.123 +18 05 16.89           ~ 268 0
78 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
79 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
80 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
81 NAME Leo V LSB 11 31 09.60 +02 13 12.0     16.0     ~ 234 0
82 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
83 NAME Crater II Dwarf Galaxy G 11 49 14 -18 24.8           ~ 176 0
84 NAME Vir I Dwarf Galaxy LSB 12 00 09.6 -00 40 48           ~ 40 0
85 NAME Hydra II G 12 21 42.1 -31 59 07           ~ 118 0
86 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
87 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
88 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
89 NAME Bootes III G 13 57 07.4 +26 46 30     12.6     ~ 115 1
90 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 269 0
91 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
92 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
93 NAME Draco II Gl? 15 52 47.6 +64 33 55           ~ 138 0
94 LEDA 2801026 LSB 16 13 47.504 +54 22 08.25     15.9     ~ 115 0
95 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
96 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
97 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
98 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
99 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
100 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
101 NAME Sagittarius II Gl? 19 52 40.5 -22 04 05           ~ 97 0
102 NAME Ind II G 20 38.9 -46 10           ~ 31 0
103 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
104 NAME Indus I Cl* 21 08 49.970 -51 09 48.60           ~ 68 0
105 IC 5152 rG 22 02 41.521 -51 17 47.20   11.03 10.9 10.19   ~ 273 1
106 NAME Gru II G 22 04.1 -46 26           ~ 110 0
107 NAME Pegasus III LSB 22 24 22.6 +05 25 12           ~ 69 0
108 NAME Andromeda XXVIII G 22 32 41.20 +31 12 58.2     15.6     ~ 88 0
109 NAME Aquarius 2 G 22 33 55.5 -09 19 39           ~ 66 0
110 NAME Tuc Galaxy G 22 41 49.6 -64 25 10   15.7 15.2     ~ 324 0
111 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 192 0
112 NAME Grus I G 22 56 42.4 -50 09 48           ~ 126 0
113 NAME Lacerta I G 22 58 16.3 +41 17 28           ~ 53 0
114 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 283 0
115 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
116 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
117 NAME Tuc V G 23 37.4 -63 16           ~ 84 0
118 NAME Phe II G 23 39 59.4 -54 24 22           ~ 107 0
119 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
120 NAME Andromeda XXI G 23 54 47.7 +42 28 15     14.8     ~ 117 0
121 NAME Tuc III G 23 56.6 -59 36           ~ 229 0
122 NAME Andromeda XXIX G 23 58 55.6 +30 45 20     16.0     ~ 61 0
123 NAME Local Group GrG ~ ~           ~ 9325 0

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