2019ApJ...874...29M

Query : 2019ApJ...874...29M

2019ApJ...874...29M - Astrophys. J., 874, 29-29 (2019/March-3)

A MegaCAM survey of outer halo satellites. VII. A single Sersic index versus effective radius relation for Milky Way outer halo satellites.

MARCHI-LASCH S., MUNOZ R.R., SANTANA F.A., CARBALLO-BELLO J.A., CHANAME J., GEHA M., SIMON J.D., STETSON P.B. and DJORGOVSKI S.G.

Abstract (from CDS):

In this work, we use structural properties of the Milky Way's outer halo (RG > 25 kpc) satellites (dwarf spheroidal galaxies, ultra-faint dwarf (UFD) galaxies and globular clusters (GCs)) derived from deep, wide-field, and homogeneous data to present evidence of a correlation in the Sersic index versus effective radius plane followed by a large fraction of outer halo GCs and satellite dwarf galaxies. We show that this correlation can be entirely reproduced by fitting empirical relations in the central surface brightness versus absolute magnitude and Sersic index versus absolute magnitude parameter spaces, and by assuming the existence of two types of outer halo GCs: one of high surface brightness (HSB group), with properties similar to those of inner halo clusters; and another of low surface brightness (LSB group), which share characteristics with dwarf spheroidal and UFD galaxies. Given the similarities of LSB clusters with dwarf spheroidal and UFD galaxies, we discuss the possibility that outer halo clusters also originated inside dark matter halos and that tidal forces from different host galaxy potentials are responsible for the different properties between HSB and LSB clusters.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: dwarf - Galaxy: halo - globular clusters: general

Simbad objects: 78

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Number of rows : 78
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
4 NAME Whiting 1 GlC 02 02 56.8 -03 15 10           ~ 177 0
5 NAME Tri II G 02 13 17.40 +36 10 42.4           ~ 164 0
6 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 299 0
7 NAME Eri III G 02 22 45.480 -52 17 04.92           ~ 79 0
8 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
9 NAME Hor I G 02 55 31.7 -54 07 08           ~ 169 0
10 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 579 0
11 NAME Horologium II G 03 16 32.1 -50 01 05           ~ 76 0
12 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
13 NAME Eridanus ClG GrG 03 38 32.00 -22 18 51.0           ~ 200 0
14 NAME Eridanus II G 03 44 21.1 -43 32 00           ~ 216 0
15 NAME E 1 GlC 03 55 02.5 -49 36 52           ~ 229 0
16 NAME Pic I G 04 43 47.4 -50 16 59           ~ 58 0
17 Cl Pal 2 GlC 04 46 05.79720 +31 22 51.0170           ~ 202 0
18 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
19 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
20 M 79 GlC 05 24 10.59 -24 31 27.3     8.16     ~ 883 0
21 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
22 NGC 2298 GlC 06 48 59.41 -36 00 19.1     8.89     ~ 547 0
23 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
24 Koposov 2 GlC 07 58 17.00 +26 15 19.4           ~ 85 1
25 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
26 NAME Pyxis Cluster GlC 09 07 57.80 -37 13 17.0           ~ 123 0
27 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
28 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 354 1
29 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
30 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
31 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
32 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
33 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
34 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
35 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 379 1
36 NAME Leo V LSB 11 31 09.60 +02 13 12.0     16.0     ~ 234 0
37 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
38 NAME Crater Cluster GlC 11 36 16.20 -10 52 38.8           ~ 117 1
39 Koposov 1 GlC 11 59 18.40 +12 15 35.8           ~ 81 0
40 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 616 0
41 NAME Hydra II G 12 21 42.1 -31 59 07           ~ 118 0
42 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
43 Cl Ruprecht 106 GlC 12 38 40.20 -51 09 01.0           ~ 413 0
44 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 1069 0
45 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
46 M 53 GlC 13 12 55.25 +18 10 05.4     7.79     ~ 907 0
47 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 675 0
48 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
49 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
50 C 1353-269 GlC 13 56 21.702 -27 10 03.00           ~ 146 0
51 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 269 0
52 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
53 NGC 5466 GlC 14 05 27.29 +28 32 04.0     9.70     ~ 887 0
54 NGC 5634 GlC 14 29 37.28 -05 58 35.1   10.69 10.05     ~ 333 0
55 NGC 5694 GlC 14 39 36.52 -26 32 18.0           ~ 323 0
56 NAME Munoz 1 Cl* 15 01 48.02 +66 58 07.3           ~ 29 0
57 NGC 5824 GlC 15 03 58.612 -33 04 06.70   10.28 9.56     ~ 441 0
58 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
59 Cl Pal 5 GlC 15 16 05.30 -00 06 41.0   15.1       ~ 797 1
60 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 399 0
61 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
62 NGC 6229 GlC 16 46 58.641 +47 31 36.38   9.38 9.86     ~ 397 0
63 GCl 50 GlC 16 59 51.1 -00 32 00   15.70       ~ 224 1
64 ClG 1710-2507 ClG 17 13 39 -25 11.1           ~ 19 0
65 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
66 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
67 M 75 GlC 20 06 04.841 -21 55 20.14     8.26     ~ 394 0
68 NGC 7006 GlC 21 01 29.465 +16 11 16.49     10.46     ~ 562 0
69 NAME Indus I Cl* 21 08 49.970 -51 09 48.60           ~ 68 0
70 NAME Segue 3 Cl* 21 21 31.0 +19 07 02           ~ 75 0
71 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
72 NAME Balbinot 1 Cl* 22 10 42.819 +14 56 49.03           ~ 29 0
73 NAME Kim 1 Cl* 22 11 41.30 +07 01 31.8           ~ 31 0
74 NAME Grus I G 22 56 42.4 -50 09 48           ~ 126 0
75 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 283 0
76 GCl 124 GlC 23 06 44.48 +12 46 19.2   15.6       ~ 307 1
77 NGC 7492 GlC 23 08 26.68 -15 36 41.3     10.48     ~ 330 0
78 NAME Phe II G 23 39 59.4 -54 24 22           ~ 107 0

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