2008ApJ...686..279K

Query : 2008ApJ...686..279K

2008ApJ...686..279K - Astrophys. J., 686, 279-291 (2008/October-2)

The luminosity function of the Milky Way satellites.

KOPOSOV S., BELOKUROV V., EVANS N.W., HEWETT P.C., IRWIN M.J., GILMORE G., ZUCKER D.B., RIX H.-W., FELLHAUER M., BELL E.F. and GLUSHKOVA E.V.

Abstract (from CDS):

We quantify the detectability of stellar Milky Way satellites in the Sloan Digital Sky Survey (SDSS) Data Release 5. We show that the effective search volumes for the recently discovered SDSS satellites depend strongly on their luminosity, with their maximum distance, Dmax, substantially smaller than the Milky Way halo's virial radius. Calculating the maximum accessible volume, Vmax, for all faint detected satellites allows the calculation of the luminosity function for Milky Way satellite galaxies, accounting quantitatively for their detectability. We find that the number density of satellite galaxies continues to rise toward low luminosities, but may flatten at MV~-5; within the uncertainties, the luminosity function can be described by a single power law dN/dMV=10x100.1(MV_+5)^, spanning luminosities from MV=-2 all the way to the luminosity of the Large Magellanic Cloud. In comparing these results to several semianalytic galaxy formation models, we find that their predictions differ significantly from the data: either the shape of the luminosity function or the model's surface brightness distribution does not match.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Formation - Galaxy: Halo - Galaxy: Structure - Galaxies: Local Group

Nomenclature: Fig.7, Table 1: [KBE2008] Candidate A (Nos X, Y, Z).

Simbad objects: 77

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Number of rows : 77
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 NGC 7814 GiG 00 03 14.947 +16 08 42.82   12.0       ~ 313 1
2 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
3 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
4 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
5 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
6 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
7 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
8 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
9 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
10 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
11 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
12 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
13 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
14 NGC 2420 OpC 07 38 24.6 +21 34 26   9.0 8.3     ~ 523 0
15 Koposov 2 GlC 07 58 17.00 +26 15 19.4           ~ 85 1
16 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
17 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
18 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
19 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
20 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
21 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
22 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 354 1
23 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
24 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
25 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
26 ACO 1000 ClG 10 24 54 +50 10.8           ~ 8 0
27 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
28 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
29 NAME UMa Region reg 11 00 +50.0           ~ 333 0
30 [KBE2008] Candidate Y ? 11 12 35 +43 26.4           ~ 2 0
31 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
32 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 379 1
33 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
34 ACO 1413 ClG 11 55 12.87 +23 23 46.9           ~ 456 0
35 [KBE2008] Candidate Z ? 11 56 35 +21 02.9           ~ 2 0
36 Koposov 1 GlC 11 59 18.40 +12 15 35.8           ~ 81 0
37 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 616 0
38 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
39 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
40 NGC 4278 LIN 12 20 06.8242 +29 16 50.722 11.54 11.09 10.16     ~ 988 2
41 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 871 0
42 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
43 M 85 GiP 12 25 24.053 +18 11 27.89   10.2       ~ 678 0
44 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1286 1
45 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
46 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1192 1
47 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
48 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
49 M 89 Sy2 12 35 39.80733343 +12 33 22.8308657 11.29 10.73 9.75     ~ 1037 2
50 NGC 4638 GiP 12 42 47.4239240016 +11 26 32.970950556   12.2 11.23     ~ 295 1
51 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
52 NGC 4637 GiP 12 42 54.0994401288 +11 26 17.684446848   16.0       ~ 35 1
53 NGC 4647 H2G 12 43 32.542 +11 34 56.89   12.5 12.5     ~ 423 1
54 [KBE2008] Candidate X ? 12 53 31 +46 24.9           ~ 2 0
55 ACO 1682 ClG 13 06 49.7 +46 32 59           ~ 149 1
56 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
57 M 53 GlC 13 12 55.25 +18 10 05.4     7.79     ~ 907 0
58 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 675 0
59 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
60 NGC 5204 LSB 13 29 36.508 +58 25 07.43   11.84   11.37   ~ 494 0
61 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
62 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 269 0
63 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
64 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
65 NGC 5466 GlC 14 05 27.29 +28 32 04.0     9.70     ~ 887 0
66 NGC 5813 LIN 15 01 11.2302420864 +01 42 07.141569696 12.00 11.45 10.46 10.06   ~ 673 2
67 Cl Pal 5 GlC 15 16 05.30 -00 06 41.0   15.1       ~ 797 1
68 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 399 0
69 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
70 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
71 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
72 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
73 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
74 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 1114 1
75 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
76 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
77 NAME Local Group GrG ~ ~           ~ 9325 0

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