2020ApJS..247...35V

Query : 2020ApJS..247...35V

2020ApJS..247...35V - Astrophys. J., Suppl. Ser., 247, 35-35 (2020/March-0)

Gaia RR Lyrae stars in nearby ultra-faint dwarf satellite galaxies.

VIVAS A.K., MARTINEZ-VAZQUEZ C. and WALKER A.R.

Abstract (from CDS):

We search for RR Lyrae stars (RRLs) in 27 nearby (<100 kpc) ultra-faint dwarf satellite galaxies using the Gaia DR2 catalog of RRLs. Based on proper motions, magnitudes, and location on the sky, we associate 47 Gaia RRLs with 14 different satellites. Distances based on RRLs are provided for those galaxies. We have identified RRLs for the first time in the Tucana II dwarf galaxy, and find additional members in Ursa Major II, Coma Berenices, Hydrus I, Bootes I, and Bootes III. In addition we have identified candidate extra-tidal RRLs in six galaxies, which suggests they may be undergoing tidal disruption. We found 10 galaxies have no RRLs either in Gaia or in the literature. However, given the known completeness of Gaia DR2 we cannot conclude these galaxies indeed lack variable stars of this type.

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

Journal keyword(s): Dwarf galaxies - RR Lyrae variable stars - Galaxy distances - Distance indicators - Local Group

Simbad objects: 101

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Number of rows : 101
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 CRTS J000417.3-592236 RR* 00 04 17.3504149992 -59 22 36.766371720     17.49     ~ 8 0
2 DES J000641.89-600929.4 RR* 00 06 41.8936493160 -60 09 29.487904344           ~ 7 0
3 CRTS J000657.1-583951 RR* 00 06 57.2008249176 -58 39 50.283511488     17.63     ~ 8 0
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
5 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
6 NAME Scl Group GrG 01 00 06 -33 44.2           ~ 526 0
7 ATO J018.8764-17.4514 RR* 01 15 30.3396178512 -17 27 05.139281916     17.44     ~ 15 0
8 ATO J019.0746-16.6301 RR* 01 16 17.9165866008 -16 37 48.504176976     17.48     ~ 15 0
9 CRTS J011632.3-173933 RR* 01 16 32.4004566216 -17 39 33.574633632     17.30     ~ 10 0
10 NAME Cetus II G 01 17.9 -17 25           ~ 56 0
11 NAME Tri II G 02 13 17.40 +36 10 42.4           ~ 164 0
12 Gaia DR3 4744205275840865408 RR* 02 19 00.4196995584 -52 46 41.278159308           ~ 2 0
13 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 299 0
14 NAME Eri III G 02 22 45.480 -52 17 04.92           ~ 79 0
15 OGLE MBR161.21.01115 RR* 02 27 57.0197115216 -79 03 07.452432756     17.773   17.226 ~ 7 0
16 OGLE SMC-RRLYR-6572 RR* 02 29 23.9649475560 -79 39 40.427193924         17.437 ~ 8 0
17 NAME Hydrus I G 02 29 33.4 -79 18 32           ~ 80 0
18 OGLE SMC-RRLYR-6316 RR* 02 29 43.9140525288 -79 16 38.318234520     18.003   17.353 ~ 7 0
19 OGLE SMC-RRLYR-6325 RR* 02 32 30.3806488104 -79 27 27.097882956     17.986   17.314 ~ 9 0
20 NAME Hor I G 02 55 31.7 -54 07 08           ~ 169 0
21 NAME Horologium II G 03 16 32.1 -50 01 05           ~ 76 0
22 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
23 NAME Eridanus II G 03 44 21.1 -43 32 00           ~ 216 0
24 NAME Reticulum III G 03 45.4 -60 27           ~ 67 0
25 Gaia DR3 4681004144885429248 RR* 03 50 12.3547306152 -59 52 40.391833872           ~ 2 0
26 NAME Pic I G 04 43 47.4 -50 16 59           ~ 58 0
27 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
28 NAME Col I G 05 31.4 -28 02           ~ 60 0
29 CRTS J073509.2-575714 RR* 07 35 09.1128506400 -57 57 14.768501436     18.06     ~ 10 0
30 NAME Carina II Dwarf Galaxy G 07 36 25.6 -57 59 57           ~ 86 0
31 MagLiteS J073645.86-575154.1 RR* 07 36 45.8472206136 -57 51 54.081839160           ~ 7 0
32 NAME Car III Dwarf Galaxy G 07 38 31.2 -57 53 59           ~ 81 0
33 ZTF J084947.64+630829.9 RR* 08 49 47.6454257664 +63 08 29.843379024           ~ 12 0
34 ZTF J085037.54+631008.7 RR* 08 50 37.5377669616 +63 10 08.701465080   18.61 18.39     A1V 15 0
35 ZTF J085114.68+632033.8 RR* 08 51 14.6790792192 +63 20 33.769208760           ~ 7 0
36 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
37 ZTF J085331.70+630647.1 RR* 08 53 31.6960512960 +63 06 47.102182956           ~ 7 0
38 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
39 [GCC2013] V6 RR* 10 33 07.2097293864 +51 50 05.697978468   20.73 20.42     ~ 5 0
40 [GCC2013] V4 RR* 10 34 18.7138317216 +51 58 29.038388412   20.62 20.24     ~ 7 0
41 [GCC2013] V3 RR* 10 34 30.8023001808 +51 56 28.585920048   20.73 20.40     ~ 8 0
42 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
43 [GCC2013] V1 RR* 10 34 59.2447052952 +51 57 07.092015228   20.72 20.47     ~ 10 0
44 ZTF J103505.60+515540.5 RR* 10 35 05.5972894944 +51 55 40.549420092   20.85 20.37     ~ 10 0
45 ZTF J103537.61+520236.6 RR* 10 35 37.6114570512 +52 02 36.400954344   20.87 20.49     ~ 10 0
46 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
47 NAME Leo V LSB 11 31 09.60 +02 13 12.0     16.0     ~ 234 0
48 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
49 NAME Vir I Dwarf Galaxy LSB 12 00 09.6 -00 40 48           ~ 40 0
50 NAME Hydra II G 12 21 42.1 -31 59 07           ~ 118 0
51 CRTS J122650.8+235600 RR* 12 26 50.8644638376 +23 56 00.327254352     18.60   18.20 ~ 11 0
52 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
53 ZTF J122733.50+235455.3 RR* 12 27 33.5029636128 +23 54 55.301936940     18.44   17.74 ~ 12 0
54 CRTS J122809.2+233927 RR* 12 28 09.2332346784 +23 39 27.170964684     18.42     ~ 10 0
55 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 1069 0
56 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
57 CRTS J135332.2+255700 RR* 13 53 32.3125989624 +25 57 00.012293460     18.95     ~ 9 0
58 CRTS J135434.8+141215 RR* 13 54 34.8559003080 +14 12 15.189832260     19.06     ~ 10 0
59 NAME Styx Stream St* 13 56 24.0 +26 48 00           ~ 30 0
60 ZTF J135653.32+262755.7 RR* 13 56 53.3292333960 +26 27 55.730904768           ~ 12 0
61 NAME Bootes III G 13 57 07.4 +26 46 30     12.6     ~ 115 1
62 ZTF J135714.89+270712.2 RR* 13 57 14.9013837648 +27 07 12.139099104           ~ 7 0
63 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 269 0
64 ZTF J135804.38+141319.2 RR* 13 58 04.3813706400 +14 13 19.213398660     19.52     ~ 12 0
65 ZTF J135806.96+262816.5 RR* 13 58 06.9659601528 +26 28 16.468817376     18.78     B8IV 9 0
66 ZTF J135806.99+262308.0 RR* 13 58 06.9994574664 +26 23 08.001659508           ~ 8 0
67 ZTF J135807.03+125122.9 RR* 13 58 07.0427298768 +12 51 22.837118868     18.30     ~ 13 0
68 [S2006b] V8 RR* 13 59 59.6869073688 +14 27 33.892871652           ~ 6 0
69 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
70 ZTF J140034.52+255552.8 RR* 14 00 34.5290180328 +25 55 52.678465104     18.63     ~ 12 0
71 ZTF J140122.51+263900.5 RR* 14 01 22.5210816912 +26 39 00.488337912           ~ 8 0
72 NAME Bootes IV LSB 15 34 45 +43 43.6           ~ 24 0
73 NAME Draco II Gl? 15 52 47.6 +64 33 55           ~ 138 0
74 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
75 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
76 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
77 [SHM2017] J298.05471-21.71636 RR* 19 52 13.1311436352 -21 42 58.964010480           ~ 9 0
78 Gaia DR3 6864423994704275200 RR* 19 52 35.8822742592 -22 01 59.882026116           ~ 5 0
79 PSO J298.1585-22.0584 RR* 19 52 38.0510145336 -22 03 30.527101584           ~ 6 0
80 NAME Sagittarius II Gl? 19 52 40.5 -22 04 05           ~ 97 0
81 [SHM2017] J298.18498-22.05132 RR* 19 52 44.3980979544 -22 03 04.800146472           ~ 9 0
82 [SHM2017] J298.23645-22.06899 RR* 19 52 56.7537008256 -22 04 08.403820284           ~ 5 0
83 NAME Ind II G 20 38.9 -46 10           ~ 31 0
84 NAME Chenab Stream St* 21 17 -59.9           ~ 45 0
85 NAME Gru II G 22 04.1 -46 26           ~ 110 0
86 NAME Pegasus III LSB 22 24 22.6 +05 25 12           ~ 69 0
87 NAME Aquarius 2 G 22 33 55.5 -09 19 39           ~ 66 0
88 Gaia DR3 6503773907232007424 RR* 22 51 32.9423232744 -58 28 30.285853320           ~ 3 0
89 DES J225136.46-583017.0 RR* 22 51 36.4614309432 -58 30 17.054985060           ~ 6 0
90 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 192 0
91 Gaia DR3 6491895638304405632 RR* 22 55 06.7945296648 -58 03 50.301240156           ~ 4 0
92 NAME Grus I G 22 56 42.4 -50 09 48           ~ 126 0
93 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 283 0
94 NAME Tuc V G 23 37.4 -63 16           ~ 84 0
95 DES J233943.12-542522.2 RR* 23 39 43.1250343920 -54 25 22.275465384           ~ 8 0
96 NAME Phe II G 23 39 59.4 -54 24 22           ~ 107 0
97 CRTS J234159.5-594040 RR* 23 41 59.6240290080 -59 40 39.176050440     17.06     ~ 7 0
98 Gaia DR3 6494865556649868928 RR* 23 53 49.8971581728 -57 55 12.098356536           ~ 5 0
99 NAME Tuc III G 23 56.6 -59 36           ~ 229 0
100 CRTS J235822.5-575239 RR* 23 58 22.6340670576 -57 52 39.105141348     17.50     ~ 8 0
101 NAME Local Group GrG ~ ~           ~ 9325 0

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