2018ApJ...860...66M

Query : 2018ApJ...860...66M

2018ApJ...860...66M - Astrophys. J., 860, 66-66 (2018/June-2)

A MegaCAM survey of outer halo satellites. III. Photometric and structural parameters.

MUNOZ R.R., COTE P., SANTANA F.A., GEHA M., SIMON J.D., OYARZUN G.A., STETSON P.B. and DJORGOVSKI S.G.

Abstract (from CDS):

We present structural parameters from a wide-field homogeneous imaging survey of Milky Way satellites carried out with the MegaCam imagers on the 3.6 m Canada-France-Hawaii Telescope and 6.5 m Magellan-Clay telescope. Our survey targets an unbiased sample of "outer halo" satellites (i.e., substructures having galactocentric distances greater than 25 kpc) and includes classical dSph galaxies, ultra-faint dwarfs, and remote globular clusters. We combine deep, panoramic gr imaging for 44 satellites and archival gr imaging for 14 additional objects (primarily obtained with the DECam instrument as part of the Dark Energy Survey) to measure photometric and structural parameters for 58 outer halo satellites. This is the largest and most uniform analysis of Milky Way satellites undertaken to date and represents roughly three-quarters (58/81 ≃ 72%) of all known outer halo satellites. We use a maximum-likelihood method to fit four density laws to each object in our survey: exponential, Plummer, King, and Sersic models. We systematically examine the isodensity contour maps and color-magnitude diagrams for each of our program objects, present a comparison with previous results, and tabulate our best-fit photometric and structural parameters, including ellipticities, position angles, effective radii, Sersic indices, absolute magnitudes, and surface brightness measurements. We investigate the distribution of outer halo satellites in the size-magnitude diagram and show that the current sample of outer halo substructures spans a wide range in effective radius, luminosity, and surface brightness, with little evidence for a clean separation into star cluster and galaxy populations at the faintest luminosities and surface brightnesses.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: dwarf - galaxies: photometry - galaxies: structure - globular clusters: general - Local Group - surveys

Simbad objects: 95

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Number of rows : 95
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 [LQS2016] DES J0034-4902 GlC 00 33 59.60 -49 02 19.8           ~ 18 0
3 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
5 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
6 [LPS2017] DES J0111-1341 Cl* 01 11 10.30 -13 41 05.4           ~ 6 0
7 NAME Cetus II G 01 17.9 -17 25           ~ 56 0
8 NAME Whiting 1 GlC 02 02 56.8 -03 15 10           ~ 177 0
9 NAME Tri II G 02 13 17.40 +36 10 42.4           ~ 164 0
10 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 299 0
11 NAME Eri III G 02 22 45.480 -52 17 04.92           ~ 79 0
12 [LPS2017] DES J0225+0304 G? 02 25 42.40 +03 04 10.1           ~ 23 0
13 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
14 NAME Hor I G 02 55 31.7 -54 07 08           ~ 169 0
15 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
16 NAME Horologium II G 03 16 32.1 -50 01 05           ~ 76 0
17 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
18 NAME Eridanus II G 03 44 21.1 -43 32 00           ~ 216 0
19 NAME Reticulum III G 03 45.4 -60 27           ~ 67 0
20 NAME E 1 GlC 03 55 02.5 -49 36 52           ~ 229 0
21 NAME Eridanus Star Cluster GlC 04 24 44.5 -21 11 13           ~ 192 1
22 NAME Pic I G 04 43 47.4 -50 16 59           ~ 58 0
23 Cl Pal 2 GlC 04 46 05.79720 +31 22 51.0170           ~ 202 0
24 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
25 NAME Col I G 05 31.4 -28 02           ~ 60 0
26 NAME Gal Anticenter reg 05 46 +28.9           ~ 1024 0
27 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
28 NAME Carina II Dwarf Galaxy G 07 36 25.6 -57 59 57           ~ 86 0
29 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
30 NAME Car III Dwarf Galaxy G 07 38 31.2 -57 53 59           ~ 81 0
31 Koposov 2 GlC 07 58 17.00 +26 15 19.4           ~ 85 1
32 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
33 NAME Pyxis Cluster GlC 09 07 57.80 -37 13 17.0           ~ 123 0
34 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
35 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 354 1
36 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
37 * alf Leo PM* 10 08 22.31099 +11 58 01.9516 0.88 1.24 1.40 1.37 1.47 B8IVn 891 1
38 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
39 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
40 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
41 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
42 NAME UMa Region reg 11 00 +50.0           ~ 333 0
43 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
44 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 379 1
45 NAME Leo V LSB 11 31 09.60 +02 13 12.0     16.0     ~ 234 0
46 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
47 NAME Crater Cluster GlC 11 36 16.20 -10 52 38.8           ~ 117 1
48 NAME Crater II Dwarf Galaxy G 11 49 14 -18 24.8           ~ 176 0
49 Koposov 1 GlC 11 59 18.40 +12 15 35.8           ~ 81 0
50 NAME Vir I Dwarf Galaxy LSB 12 00 09.6 -00 40 48           ~ 40 0
51 NAME Hydra II G 12 21 42.1 -31 59 07           ~ 118 0
52 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
53 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
54 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
55 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
56 C 1353-269 GlC 13 56 21.702 -27 10 03.00           ~ 146 0
57 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 269 0
58 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
59 NGC 5694 GlC 14 39 36.52 -26 32 18.0           ~ 323 0
60 NAME Munoz 1 Cl* 15 01 48.02 +66 58 07.3           ~ 29 0
61 NGC 5824 GlC 15 03 58.612 -33 04 06.70   10.28 9.56     ~ 441 0
62 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
63 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
64 NAME Draco II Gl? 15 52 47.6 +64 33 55           ~ 138 0
65 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 399 0
66 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
67 NGC 6229 GlC 16 46 58.641 +47 31 36.38   9.38 9.86     ~ 397 0
68 GCl 50 GlC 16 59 51.1 -00 32 00   15.70       ~ 224 1
69 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
70 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
71 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
72 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
73 NAME Orphan Stream St* 19 09 -23.           ~ 281 0
74 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 460 0
75 NAME Sagittarius II Gl? 19 52 40.5 -22 04 05           ~ 97 0
76 NAME Ind II G 20 38.9 -46 10           ~ 31 0
77 NGC 7006 GlC 21 01 29.465 +16 11 16.49     10.46     ~ 562 0
78 NAME Laevens 3 GlC 21 06 54.3 +14 58 48           ~ 43 0
79 NAME Indus I Cl* 21 08 49.970 -51 09 48.60           ~ 68 0
80 NAME Segue 3 Cl* 21 21 31.0 +19 07 02           ~ 75 0
81 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
82 NAME Gru II G 22 04.1 -46 26           ~ 110 0
83 NAME Balbinot 1 Cl* 22 10 42.819 +14 56 49.03           ~ 29 0
84 NAME Kim 1 Cl* 22 11 41.30 +07 01 31.8           ~ 31 0
85 NAME Pegasus III LSB 22 24 22.6 +05 25 12           ~ 69 0
86 NAME Aquarius 2 G 22 33 55.5 -09 19 39           ~ 66 0
87 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 192 0
88 NAME Grus I G 22 56 42.4 -50 09 48           ~ 126 0
89 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 283 0
90 GCl 124 GlC 23 06 44.48 +12 46 19.2   15.6       ~ 307 1
91 NGC 7492 GlC 23 08 26.68 -15 36 41.3     10.48     ~ 330 0
92 NAME Tuc V G 23 37.4 -63 16           ~ 84 0
93 NAME Phe II G 23 39 59.4 -54 24 22           ~ 107 0
94 NAME Tuc III G 23 56.6 -59 36           ~ 229 0
95 NAME Local Group GrG ~ ~           ~ 9325 0

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