2020RNAAS...4..229M

Query : 2020RNAAS...4..229M

2020RNAAS...4..229M - Research Notes of the AAS, 4, 229 (2020/December-0)

Updated Proper Motions for Local Group Dwarf Galaxies Using Gaia Early Data Release 3.

McCONNACHIE A.W. and VENN K.A.

Abstract (from CDS):

Updated systemic proper motion estimates for 58 Milky Way satellite galaxies, based on Gaia Early Data Release 3 (EDR3), are provided. This sample is identical to that studied by McConnachie & Venn and the methodology is essentially unchanged from the original paper. The superiority of Gaia EDR3 compared to Gaia Data Release 2 means that Boötes 4, Cetus 3, Pegasus 3 and Virgo 1 have detectable systemic proper motions for the first time. For the entire galaxy sample, the median random uncertainties in the systemic proper motions are approximately a factor of two better than the previous estimates using Gaia DR2. Relevant systematic errors, which are also a factor of two smaller, dominate over random uncertainties for 25 out of the 58 objects in the sample.

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

Journal keyword(s): Dwarf galaxies - Local Group - Proper motions - Galaxy dynamics

Simbad objects: 63

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Number of rows : 63
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 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
3 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
4 NAME Cetus II G 01 17.9 -17 25           ~ 56 0
5 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
6 NAME Cetus III Dwarf Galaxy LSB 02 05 19.40 -04 16 12.0           ~ 32 0
7 NAME Tri II G 02 13 17.40 +36 10 42.4           ~ 164 0
8 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 299 0
9 NAME Eri III G 02 22 45.480 -52 17 04.92           ~ 79 0
10 [LPS2017] DES J0225+0304 G? 02 25 42.40 +03 04 10.1           ~ 23 0
11 NAME Hydrus I G 02 29 33.4 -79 18 32           ~ 80 0
12 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
13 NAME Hor I G 02 55 31.7 -54 07 08           ~ 169 0
14 NAME Horologium II G 03 16 32.1 -50 01 05           ~ 76 0
15 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
16 NAME Eridanus II G 03 44 21.1 -43 32 00           ~ 216 0
17 NAME Reticulum III G 03 45.4 -60 27           ~ 67 0
18 NAME Pic I G 04 43 47.4 -50 16 59           ~ 58 0
19 NAME Col I G 05 31.4 -28 02           ~ 60 0
20 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
21 NAME Pic II G 06 44 43 -59 53.8           ~ 33 0
22 NAME Carina II Dwarf Galaxy G 07 36 25.6 -57 59 57           ~ 86 0
23 NAME Car III Dwarf Galaxy G 07 38 31.2 -57 53 59           ~ 81 0
24 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
25 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
26 NAME Antlia II Dwarf Galaxy G 09 35 32.8 -36 46 02           ~ 109 0
27 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
28 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
29 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
30 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
31 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
32 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
33 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
34 NAME Leo V LSB 11 31 09.60 +02 13 12.0     16.0     ~ 234 0
35 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
36 NAME Crater II Dwarf Galaxy G 11 49 14 -18 24.8           ~ 176 0
37 NAME Hydra II G 12 21 42.1 -31 59 07           ~ 118 0
38 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
39 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
40 NAME Centaurus I G 12 38 20 -40 54.1     14.78     ~ 29 0
41 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
42 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
43 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 269 0
44 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
45 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
46 NAME Bootes IV LSB 15 34 45 +43 43.6           ~ 24 0
47 NAME Draco II Gl? 15 52 47.6 +64 33 55           ~ 138 0
48 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
49 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
50 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
51 NAME Sagittarius II Gl? 19 52 40.5 -22 04 05           ~ 97 0
52 NAME Ind II G 20 38.9 -46 10           ~ 31 0
53 NAME Indus I Cl* 21 08 49.970 -51 09 48.60           ~ 68 0
54 NAME Gru II G 22 04.1 -46 26           ~ 110 0
55 NAME Pegasus III LSB 22 24 22.6 +05 25 12           ~ 69 0
56 NAME Aquarius 2 G 22 33 55.5 -09 19 39           ~ 66 0
57 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 192 0
58 NAME Grus I G 22 56 42.4 -50 09 48           ~ 126 0
59 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 283 0
60 NAME Tuc V G 23 37.4 -63 16           ~ 84 0
61 NAME Phe II G 23 39 59.4 -54 24 22           ~ 107 0
62 NAME Tuc III G 23 56.6 -59 36           ~ 229 0
63 NAME Local Group GrG ~ ~           ~ 9325 0

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