2014ApJ...788..188S


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.21CET06:06:25

2014ApJ...788..188S - Astrophys. J., 788, 188 (2014/June-3)

Faint dwarfs in nearby groups.

SPELLER R. and TAYLOR J.E.

Abstract (from CDS):

The number and distribution of dwarf satellite galaxies remain a critical test of cold dark matter-dominated structure formation on small scales. Until recently, observational information about galaxy formation on these scales has been limited mainly to the Local Group. We have searched for faint analogues of Local Group dwarfs around nearby bright galaxies, using a spatial clustering analysis of the photometric catalog of the Sloan Digital Sky Survey (SDSS) Data Release 8. Several other recent searches of SDSS have detected clustered satellite populations down to Δmr≡ (m_r, sat_- m_r, main_) ∼ 6-8, using photometric redshifts to reduce background contamination. SDSS photometric redshifts are relatively imprecise, however, for faint and nearby galaxies. Instead, we use angular size to select potential nearby dwarfs and consider only the nearest isolated bright galaxies as primaries. As a result, we are able to detect an excess clustering signal from companions down to Δmr= 12, 4 mag fainter than most recent studies. We detect an overdensity of objects at separations <400 kpc, corresponding to about 4.6±0.5 satellites per central galaxy, consistent with the satellite abundance expected from the Local Group, given our selection function. Although the sample of satellites detected is incomplete by construction, since it excludes the least and most compact dwarfs, this detection provides a lower bound on the average satellite luminosity function, down to luminosities corresponding to the faintest "classical" dwarfs of the Local Group.

Abstract Copyright:

Journal keyword(s): dark matter - galaxies: dwarf - galaxies: formation - galaxies: groups: general - galaxies: luminosity function, mass function - Local Group

Simbad objects: 62

goto Full paper

goto View the reference in ADS

Number of rows : 62

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME WLM Galaxy G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 562 2
2 NAME Andromeda XX G 00 07 30.70 +35 07 56.4     18.2     ~ 55 0
3 And XIX G 00 19 32.10 +35 02 37.1     15.6     ~ 106 0
4 NAME Andromeda XXVI G 00 23 45.6 +47 54 58     17.3     ~ 54 0
5 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 197 0
6 NAME Andromeda XXV G 00 30 08.9 +46 51 07     14.8     ~ 80 0
7 NAME Andromeda III G 00 35 22.7 +36 30 17     14.4     ~ 264 0
8 NAME Andromeda XVII G 00 37 07.0 +44 19 20     15.8     ~ 74 0
9 NAME Andromeda XXVII G 00 37 27.1 +45 23 13     16.7     ~ 58 0
10 NGC 185 Sy2 00 38 57.970 +48 20 14.56   9.10 9.2     ~ 715 1
11 M 110 GiG 00 40 22.0544552438 +41 41 07.496294862   8.92 8.07     ~ 1190 1
12 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 1980 2
13 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10666 1
14 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 297 0
15 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 100 0
16 NAME Andromeda XII G 00 47 27.0 +34 22 29     18.3     ~ 102 0
17 NAME Andromeda XIV G 00 51 35.0 +29 41 49     15.9     ~ 101 0
18 NAME Andromeda XIII G 00 51 51.0 +33 00 16     18.1     ~ 101 0
19 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9180 1
20 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 144 1
21 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 108 0
22 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1077 4
23 NAME Pisces I G 01 03 56.6 +21 53 41   16.18 14.3     ~ 353 0
24 IC 1613 GiC 01 04 54.2 +02 08 00   10.42 10.01 9.77   ~ 1089 2
25 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 93 1
26 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 181 0
27 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 89 0
28 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 332 0
29 NAME Andromeda XXIV G 01 18 30.0 +46 21 58     16.3     ~ 43 0
30 NAME Andromeda XXII G 01 27 40.0 +28 05 25     18.0     ~ 67 0
31 NAME Andromeda XXIII G 01 29 21.8 +38 43 08     14.2     ~ 62 0
32 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5050 1
33 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 173 0
34 NAME Fornax Dwarf Spheroidal G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1430 1
35 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5443 1
36 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14463 1
37 NAME Carina dSph G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 965 0
38 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 296 0
39 NAME Leo I dSph G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1019 1
40 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 254 1
41 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 242 0
42 NAME Leo B G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 712 0
43 NAME Leo Cluster ClG 11 30.0 +15 00           ~ 46 0
44 NAME Leo V G 11 31 09.60 +02 13 12.0     16.0     ~ 151 0
45 NAME Leo IV Dwarf Galaxy G 11 32 57.0 -00 32 00     15.1     ~ 300 1
46 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5697 0
47 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 374 1
48 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 199 2
49 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4129 2
50 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 237 1
51 NAME Bootes III G 13 57 07.4 +26 46 30     12.6     ~ 62 1
52 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 180 0
53 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 319 0
54 NAME UMi Galaxy G 15 09 11.34 +67 12 51.7   13.60 10.6     ~ 1150 0
55 NAME Dra dSph G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1133 1
56 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 1669 2
57 NAME Aquarius Dwarf G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 387 1
58 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 204 0
59 NAME Andromeda VII GiG 23 26 31.7 +50 40 33   13.6 11.8     ~ 170 1
60 NAME Peg dSph GiG 23 51 46.4 +24 35 11   14.5 13.2     ~ 208 2
61 NAME Andromeda XXI G 23 54 47.7 +42 28 15     14.8     ~ 82 0
62 NAME Local Group GrG ~ ~           ~ 6758 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2014ApJ...788..188S and select 'bookmark this link' or equivalent in the popup menu


2020.01.21-06:06:25

© Université de Strasbourg/CNRS

    • Contact