2020AJ....160..124M

Query : 2020AJ....160..124M

2020AJ....160..124M - Astron. J., 160, 124-124 (2020/September-0)

Revised and new proper motions for confirmed and candidate Milky Way dwarf galaxies.

McCONNACHIE A.W. and VENN K.A.

Abstract (from CDS):

A new derivation of systemic proper motions of Milky Way satellites is presented and applied to 59 confirmed or candidate dwarf galaxy satellites using Gaia Data Release 2. This constitutes all known Milky Way dwarf galaxies (and likely candidates) as of 2020 May, except for the Magellanic Clouds, the Canis Major and Hydra 1 stellar overdensities, and the tidally disrupting Bootes III and Sagittarius dwarf galaxies. We derive systemic proper motions for the first time for Indus 1, DES J0225+0304, Cetus 2, Pictor 2, and Leo T, but note that the latter three rely on photometry that is of poorer quality than that of the rest of the sample. We cannot resolve a signal for Bootes 4, Cetus 3, Indus 2, Pegasus 3, or Virgo 1. Our method is inspired by the maximum likelihood approach of Pace & Li and examines simultaneously the spatial, color-magnitude, and proper motion distribution of sources. Systemic proper motions are derived without the need to identify confirmed radial velocity members, although the proper motions of these stars, where available, are incorporated into the analysis through a prior on the model. The associated uncertainties on the systemic proper motions are on average a factor of ∼1.4 smaller than existing literature values. Analysis of the implied membership distribution of the satellites suggests that we accurately identify member stars with a contamination rate lower than 1 in 20.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Dwarf galaxies - Local Group - Proper motions - Milky Way stellar halo

Simbad objects: 174

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Number of rows : 174
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 Tuc IV G 00 02.9 -60 51           ~ 90 0
2 DES J000548.69-593406.1 * 00 05 48.7161674688 -59 34 06.183178968           ~ 3 0
3 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
4 Gaia DR3 2355341137206398592 * 01 17 40.9570321392 -17 27 55.462384800           ~ 1 0
5 DES J011748.75-172223.3 * 01 17 48.7654064352 -17 22 23.480822352           ~ 2 0
6 NAME Cetus II G 01 17.9 -17 25           ~ 56 0
7 DES J011753.74-172557.9 * 01 17 53.7543466632 -17 25 58.084402152           ~ 2 0
8 Gaia DR3 2355341824400788352 RR? 01 17 54.7193370432 -17 24 16.237669824           ~ 2 0
9 Gaia DR3 2355341583883100160 * 01 17 55.1723244360 -17 25 16.341775572           ~ 1 0
10 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
11 NAME Cetus III Dwarf Galaxy LSB 02 05 19.40 -04 16 12.0           ~ 32 0
12 2MASS J02131654+3610457 Pe* 02 13 16.5455102352 +36 10 45.762445236           ~ 12 0
13 NAME Tri II G 02 13 17.40 +36 10 42.4           ~ 164 0
14 [MIC2016] 46 * 02 13 21.5422508376 +36 09 57.377651472           ~ 10 0
15 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 299 0
16 2MASS J02193313+2008303 RG* 02 19 33.1319690040 +20 08 30.231461616     16.60     ~ 6 0
17 NAME Eri III G 02 22 45.480 -52 17 04.92           ~ 79 0
18 Gaia DR3 2515347012786866688 * 02 25 42.3228262704 +03 03 33.635462724           ~ 1 0
19 [LPS2017] DES J0225+0304 G? 02 25 42.40 +03 04 10.1           ~ 23 0
20 NAME Hydrus I G 02 29 33.4 -79 18 32           ~ 80 0
21 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
22 NAME Hor I G 02 55 31.7 -54 07 08           ~ 169 0
23 DES J025535.19-540644.0 * 02 55 35.2141523568 -54 06 43.942433004           ~ 7 0
24 DES J025540.30-540807.2 * 02 55 40.3200708576 -54 08 07.221816348           ~ 6 0
25 DES J025543.79-540519.6 * 02 55 43.8082890384 -54 05 19.597500456           ~ 4 0
26 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
27 NAME Horologium II G 03 16 32.1 -50 01 05           ~ 76 0
28 Gaia DR3 4749201525396641408 * 03 17 21.0786111048 -50 03 40.627942452           ~ 2 0
29 DES J033447.93-540525.0 Pe* 03 34 47.9500542384 -54 05 24.970508448           ~ 14 0
30 [WMO2015] 79 RG* 03 34 54.2533761000 -54 05 57.980511384           ~ 16 0
31 [WMO2015] 129 RG* 03 34 57.5852522640 -54 05 31.339557060           ~ 17 0
32 [KCB2015] Reti 4 RG* 03 35 23.8544722128 -54 04 07.586442660           ~ 29 0
33 [WMO2015] 115 RG* 03 35 31.1536864104 -54 01 48.157854492           ~ 17 0
34 [WMO2015] 35 RG* 03 35 37.0733902248 -54 04 01.174004400           ~ 15 0
35 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
36 [KCB2015] Reti 15 RG* 03 35 48.0547676520 -54 03 49.765718808           ~ 14 0
37 DES J033556.28-540316.3 RG* 03 35 56.2923112560 -54 03 16.203729492           ~ 12 0
38 [KCB2015] Reti 18 RG* 03 36 07.7638135488 -54 02 35.507879592           ~ 21 0
39 NAME Eridanus II G 03 44 21.1 -43 32 00           ~ 216 0
40 NAME Reticulum III G 03 45.4 -60 27           ~ 67 0
41 NAME Pic I G 04 43 47.4 -50 16 59           ~ 58 0
42 NAME Col I G 05 31.4 -28 02           ~ 60 0
43 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
44 Gaia DR3 5480252925370608000 * 06 44 17.1203873976 -59 53 56.400819612           ~ 1 0
45 NAME Pic II G 06 44 43 -59 53.8           ~ 33 0
46 Gaia DR3 5480249356255194112 * 06 44 54.6892375608 -59 55 02.985749112           ~ 1 0
47 NAME CMa Dwarf Galaxy G 07 12.6 -27 40     -0.1     ~ 203 1
48 CRTS J073509.2-575714 RR* 07 35 09.1128506400 -57 57 14.768501436     18.06     ~ 10 0
49 Gaia DR3 5293928074318766848 * 07 35 37.6615686504 -58 01 51.733101000           ~ 3 0
50 MagLiteS J073601.33-575843.8 * 07 36 01.3273921296 -57 58 43.780052424           ~ 5 0
51 MagLiteS J073621.25-575800.3 * 07 36 21.2523074760 -57 58 00.198767568           ~ 5 0
52 MagLiteS J073624.98-575714.3 * 07 36 24.9852708864 -57 57 14.203766628           ~ 5 0
53 NAME Carina II Dwarf Galaxy G 07 36 25.6 -57 59 57           ~ 86 0
54 MagLiteS J073646.47-575910.2 * 07 36 46.4664436728 -57 59 10.151342844           ~ 4 0
55 Gaia DR3 5293947247051916544 * 07 36 51.1101265368 -58 01 46.356404016           ~ 3 0
56 Gaia DR3 5293894539213647872 * 07 36 51.8842587264 -58 16 39.250386876           ~ 2 0
57 MagLiteS J073729.30-580447.8 * 07 37 29.2761127272 -58 04 47.699742864           ~ 4 0
58 MagLiteS J073737.04-574925.5 * 07 37 37.0200618288 -57 49 25.445037540           ~ 3 0
59 MagLiteS J073739.81-580507.0 * 07 37 39.7893067896 -58 05 06.920312028           ~ 5 0
60 MagLiteS J073745.86-580406.7 * 07 37 45.8424736152 -58 04 06.666224196           ~ 4 0
61 Gaia DR3 5293896360279425664 * 07 38 08.5099033752 -58 09 35.084967408           ~ 2 0
62 Gaia DR3 5293955665187701120 * 07 38 22.2906211368 -57 53 02.121169740           ~ 3 0
63 NAME Car III Dwarf Galaxy G 07 38 31.2 -57 53 59           ~ 81 0
64 MagLiteS J073834.94-575705.4 * 07 38 34.9283524704 -57 57 05.302138536           ~ 4 0
65 [FSG2010] UMaII-S1 RG* 08 49 53.4624869976 +63 08 21.677104536           ~ 15 0
66 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
67 [FSG2010] UMaII-S2 RG* 08 52 33.5093638824 +63 05 01.103748900           F5 17 0
68 [FSG2010] UMaII-S3 RG* 08 52 59.0384316768 +63 05 54.601218996           F2 12 0
69 NAME Hydra I overdensity As* 08 56 +03.5           ~ 8 0
70 [VGK2013] J093449.78+170430.9 RG* 09 34 49.7764827960 +17 04 30.857320380           ~ 3 0
71 [VGK2013] J093451.14+170217.5 RG* 09 34 51.1429333464 +17 02 17.534591340           ~ 3 0
72 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
73 Gaia DR3 620750558139087744 * 09 34 53.9468692200 +17 02 17.760404868           ~ 1 0
74 [VGK2013] J093454.50+170417.9 RG* 09 34 54.5032150080 +17 04 17.889856248           ~ 3 0
75 [VGK2013] J093457.28+170221.8 RG* 09 34 57.2776327032 +17 02 21.827916492           ~ 3 0
76 [KCG2013] LeoT 5836544 RG* 09 34 58.6424898624 +17 01 40.134112608           ~ 2 0
77 NAME Antlia II Dwarf Galaxy G 09 35 32.8 -36 46 02           ~ 109 0
78 [NWG2010] Seg1 161 * 10 06 39.3360625992 +16 00 08.593623000           F3/F5V 8 0
79 [VGK2013] J100652.33+160235.8 RG* 10 06 52.3299126744 +16 02 35.876254164           ~ 10 0
80 2MASS J10070245+1550553 RG* 10 07 02.4667272792 +15 50 55.265683272           ~ 7 0
81 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
82 [VGK2013] J100710.08+160623.9 RG* 10 07 10.0722875928 +16 06 23.972582304           ~ 9 0
83 [VGK2013] J100714.58+160154.5 RG* 10 07 14.5818689784 +16 01 54.577483428           ~ 13 0
84 2MASS J10074272+1601069 RG* 10 07 42.7140923520 +16 01 06.917328480           ~ 7 0
85 2MASS J10081444+1605011 RB? 10 08 14.4415595736 +16 05 01.198034340           ~ 27 1
86 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
87 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
88 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
89 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
90 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
91 NAME Leo V LSB 11 31 09.60 +02 13 12.0     16.0     ~ 234 0
92 NAME Leo IV-S1 RG* 11 32 55.9959522600 -00 30 27.821242008           ~ 12 0
93 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
94 [VGK2013] J113258.70-003450.0 RG* 11 32 58.7041047528 -00 34 49.963348452           ~ 4 0
95 NAME Crater II Dwarf Galaxy G 11 49 14 -18 24.8           ~ 176 0
96 NAME Hydra II G 12 21 42.1 -31 59 07           ~ 118 0
97 2MASS J12264344+2357026 RG* 12 26 43.4656133280 +23 57 02.557564056           ~ 7 0
98 2MASS J12265545+2356095 RG* 12 26 55.4572934232 +23 56 09.812887008           ~ 10 0
99 2MASS J12265667+2356117 RG* 12 26 56.6612585616 +23 56 11.829707844           ~ 9 0
100 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
101 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
102 NAME Centaurus I G 12 38 20 -40 54.1     14.78     ~ 29 0
103 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
104 [VGK2013] J125713.64+341846.9 RG* 12 57 13.6369449336 +34 18 46.980310068           ~ 4 0
105 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
106 NAME Styx Stream St* 13 56 24.0 +26 48 00           ~ 30 0
107 NAME Bootes III G 13 57 07.4 +26 46 30     12.6     ~ 115 1
108 SDSS J135751.18+125136.9 * 13 57 51.1805930904 +12 51 36.897813396           ~ 7 0
109 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 269 0
110 SDSS J135801.42+125105.0 * 13 58 01.4217999504 +12 51 05.042076696           ~ 6 0
111 2MASS J13583380+1421083 RB? 13 58 33.8132852928 +14 21 08.488847052           ~ 30 0
112 [NGW2008] 980 RB? 13 59 12.6811477896 +13 42 55.710720072           ~ 11 0
113 2MASS J13593551+1420237 RB? 13 59 35.5221237984 +14 20 23.717473116           ~ 12 0
114 2MASS J13594880+1419430 RB? 13 59 48.8035332144 +14 19 42.902306436           ~ 12 0
115 [NGW2008] 130 RB? 13 59 48.9735940008 +14 30 06.215943348           ~ 11 0
116 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
117 2MASS J14000107+1436515 RB? 14 00 01.0701105384 +14 36 51.510832956           ~ 13 0
118 2MASS J14000985+1428228 * 14 00 09.8519784912 +14 28 22.997618256           ~ 15 0
119 2MASS J14001049+1431454 RB? 14 00 10.4860038864 +14 31 45.523177176           ~ 20 0
120 2MASS J14001174+1425013 RB? 14 00 11.7235211064 +14 25 01.409650068           ~ 15 0
121 2MASS J14001456+1435527 RB? 14 00 14.5619559384 +14 35 52.725428304           ~ 19 0
122 2MASS J14002582+1426073 RB? 14 00 25.8319555968 +14 26 07.618237800           ~ 16 0
123 2MASS J14003150+1434034 RB? 14 00 31.5041705280 +14 34 03.572360688           ~ 18 0
124 2MASS J14003651+1439272 RB? 14 00 36.5169418536 +14 39 27.331581456           ~ 13 0
125 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
126 NAME Bootes IV LSB 15 34 45 +43 43.6           ~ 24 0
127 NAME Draco II Gl? 15 52 47.6 +64 33 55           ~ 138 0
128 [VGK2013] J163044.50+124947.9 RG* 16 30 44.5001856480 +12 49 47.839346148           ~ 10 0
129 PSO J247.7310+12.7696 RG* 16 30 55.4627624760 +12 46 10.835694084           ~ 6 0
130 PSO J247.7384+12.7889 RG* 16 30 57.2333866416 +12 47 20.310171288           ~ 16 0
131 [VGK2013] J163059.32+124725.6 RG* 16 30 59.3217413640 +12 47 25.623962736           ~ 9 0
132 PSO J247.7526+12.8254 RG* 16 31 00.6258450528 +12 49 31.802940156           ~ 8 0
133 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
134 [AFK2009] 12729 RG* 16 31 07.4930028240 +12 31 33.691742220           ~ 4 0
135 PSO J247.7838+12.8016 RG* 16 31 08.1226050504 +12 48 06.110803188           ~ 9 0
136 [VGK2013] J163114.07+124526.6 RG* 16 31 14.0631856416 +12 45 26.656681392           ~ 9 0
137 [AFK2009] 12175 RG* 16 31 15.8190067944 +12 34 56.471336292           ~ 4 0
138 PSO J247.8456+12.7466 RG* 16 31 22.9564309656 +12 44 47.900249700           ~ 15 0
139 PSO J247.8543+12.7581 RG* 16 31 25.0401138672 +12 45 29.176143696           ~ 8 0
140 PSO J247.8740+12.7402 RG* 16 31 29.7708575376 +12 44 25.014778980           ~ 7 0
141 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
142 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
143 PSO J298.1614-22.0826 Pe* 19 52 38.7509621928 -22 04 57.554654160           ~ 3 0
144 NAME Sagittarius II Gl? 19 52 40.5 -22 04 05           ~ 97 0
145 NAME Ind II G 20 38.9 -46 10           ~ 31 0
146 DES J210845.00-511018.0 * 21 08 45.0121020768 -51 10 18.146745804           ~ 2 0
147 NAME Indus I Cl* 21 08 49.970 -51 09 48.60           ~ 68 0
148 DES J210851.19-510929.4 * 21 08 51.1989089805 -51 09 29.531304678           ~ 2 0
149 Gaia DR3 6476965477286801280 * 21 09 02.6445981264 -51 12 34.768511964           ~ 1 0
150 NAME Gru II G 22 04.1 -46 26           ~ 110 0
151 NAME Pegasus III LSB 22 24 22.6 +05 25 12           ~ 69 0
152 NAME Aquarius 2 G 22 33 55.5 -09 19 39           ~ 66 0
153 NAME CFJ2018 TucII-203 * 22 50 08.9186319408 -58 29 59.143806024           ~ 6 0
154 [WMO2016] Tuc2 78 * 22 50 41.0709343584 -58 31 08.395627908           ~ 7 0
155 [WMO2016] Tuc2 52 * 22 50 51.6417449616 -58 34 32.651836140           ~ 8 0
156 [WMO2016] Tuc2 33 * 22 51 08.3231201568 -58 33 08.213861232           ~ 9 0
157 [WMO2016] Tuc2 6 * 22 51 43.0742838264 -58 32 33.810668412           ~ 9 0
158 [WMO2016] Tuc2 11 * 22 51 50.2968662400 -58 37 40.239071544           ~ 9 0
159 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 192 0
160 NAME CFJ2018 TucII-206 * 22 54 36.6535202304 -58 36 58.044610224           ~ 6 0
161 DES J225629.92-500433.3 Pe* 22 56 29.9287929264 -50 04 33.483024732           ~ 5 0
162 NAME Grus I G 22 56 42.4 -50 09 48           ~ 126 0
163 DES J225658.06-501357.9 Pe* 22 56 58.0747506936 -50 13 58.094138316           ~ 5 0
164 [SSW2012] Pisces II 10694 * 22 58 25.0754200608 +05 57 20.109688668           ~ 8 0
165 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 283 0
166 NAME Tuc V G 23 37.4 -63 16           ~ 84 0
167 DES J233955.77-542208.2 * 23 39 55.7963068776 -54 22 08.343636096           ~ 3 0
168 NAME Phe II G 23 39 59.4 -54 24 22           ~ 107 0
169 DES J234350.83-593925.6 SB* 23 43 50.8500370512 -59 39 25.741782252           ~ 3 0
170 DES J235532.68-593115.0 * 23 55 32.6946605952 -59 31 15.049317072           ~ 9 0
171 DES J235549.92-593259.7 * 23 55 49.9347828744 -59 32 59.696894220           ~ 6 0
172 NAME Tuc III G 23 56.6 -59 36           ~ 229 0
173 DES J235738.50-593611.7 * 23 57 38.5118229432 -59 36 11.763919548           ~ 6 0
174 NAME Local Group GrG ~ ~           ~ 9325 0

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