2014ApJ...790...76S

Query : 2014ApJ...790...76S

2014ApJ...790...76S - Astrophys. J., 790, 76 (2014/July-3)

Dwarf galaxies in the halo of NGC 891.

SCHULZ E.

Abstract (from CDS):

We report the results of a survey of the region within 40 arcmin of NGC 891, a nearby nearly perfectly edge-on spiral galaxy. Candidate "non-stars" with diameters greater than 15 arcsec were selected from the GSC 2.3.2 catalog and cross-comparison of observations in several bands using archived GALEX, DSS2, WISE, and Two Micron All Sky Survey images identified contaminating stars, artifacts, and background galaxies, all of which were excluded. The resulting 71 galaxies, many of which were previously uncataloged, comprise a size-limited survey of the region. A majority of the galaxies are in the background of NGC 891 and are for the most part members of the A347 cluster at a distance of about 75 Mpc. The new finds approximately double the known membership of A347, previously thought to be relatively sparse. We identify a total of seven dwarf galaxies, most of which are new discoveries. The newly discovered dwarf galaxies are dim and gas-poor and may be associated with the previously observed arcs of red giant branch halo stars in the halo and the prominent H I filament and the lopsided features in the disk of NGC 891. Several of the dwarfs show signs of disruption, consistent with being remnants of an ancient collision.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual: NGC 891 - galaxies: dwarf - galaxies: groups: individual: A347 - surveys

VizieR on-line data: <Available at CDS (J/ApJ/790/76): table1.dat table2.dat>

Simbad objects: 79

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Number of rows : 79
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 ACO 147 ClG 01 08 10 +02 10.0           ~ 117 0
3 LEDA 2204759 G 02 19 45.6 +42 43 15   13.27       ~ 2 0
4 ZOAG G139.92-17.67 G 02 19 50.0 +42 15 52   15.64       ~ 2 0
5 GSC2.3 NBZ5003674 G 02 19 55.0 +42 11 42   16.16       ~ 1 0
6 GSC2.3 NBZ5012013 G 02 20 07.0 +42 45 44   16.73       ~ 1 0
7 LEDA 2196068 G 02 20 24.7 +42 17 49   14.44       ~ 3 0
8 GSC2.3 NCIA016387 G 02 20 42.0 +42 16 35   15.69       ~ 1 0
9 LEDA 2192089 G 02 20 48.8 +42 05 02   14.38       ~ 2 0
10 2MASX J02205112+4205573 G 02 20 51.128 +42 05 57.36   15.45       ~ 2 0
11 Z 538-47 G 02 21 05.5749219984 +41 49 11.956774296   13.83       ~ 6 0
12 MCG+07-05-041 G 02 21 12.0171517128 +42 51 48.322858392   11.82       ~ 10 0
13 GSC2.3 NCIA018969 G 02 21 12.2 +42 21 50   17.97   16.85   ~ 10 0
14 MCG+07-05-040 AG? 02 21 13.40 +42 45 45.7   11.26   14.38   ~ 46 0
15 2MASS J02211584+4200056 G 02 21 15.82587 +42 00 05.9620   19.21       ~ 1 0
16 [SKM2012] A347 2 G 02 21 16.8 +42 52 43   14.97       ~ 2 0
17 Z 538-48 GiG 02 21 23.234 +42 52 34.96   15.3   13.95   ~ 33 0
18 GSC2.3 NCIA010131 G 02 21 32.0 +42 04 28   17.41       ~ 1 0
19 LEDA 2204166 G 02 21 32.6 +42 41 35   12.86       ~ 3 0
20 Z 538-50 GiG 02 22 18.4042638648 +42 48 19.135648044   11.51       ~ 14 0
21 GSC2.3 NCIA012182 G 02 22 21.0 +42 08 00   17.04       ~ 1 0
22 2MASX J02222784+4300488 G 02 22 27.8557525776 +43 00 48.526135272   14.50       ~ 5 0
23 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
24 LEDA 2189635 G 02 22 35.8 +41 56 45   15.66       ~ 3 0
25 LEDA 2204848 G 02 22 50.0 +42 43 29   13.43       ~ 3 0
26 Z 538-54 GiC 02 22 50.4421171176 +42 09 29.191941540   13.06   14.75   ~ 10 0
27 2MASX J02225081+4259169 G 02 22 50.8569670032 +42 59 16.345813848   14.45       ~ 5 0
28 GSC2.3 NCIB031541 G 02 22 55.0 +41 43 41   17.36       ~ 1 0
29 [CGG2021] dw0222p4242 G 02 22 55.2 +42 42 44   18.9   17.98   ~ 9 0
30 2MASX J02225812+4258540 G 02 22 58.1039876520 +42 58 54.439039920   13.54       ~ 5 0
31 ZOAG G140.55-17.62 G 02 22 59.0 +42 05 38   12.83       ~ 2 0
32 LEDA 2187896 G 02 23 02.8 +41 50 53   13.69       ~ 2 0
33 2MASX J02230343+4254461 G 02 23 03.4273838232 +42 54 45.854762688   12.84       ~ 13 0
34 2MASX J02231298+4259162 GiG 02 23 12.9787908648 +42 59 16.063447020   15.0       ~ 20 0
35 2MASX J02231510+4243532 G 02 23 15.1372079376 +42 43 53.650006896   12.99       ~ 4 0
36 2MASX J02231555+4155212 G 02 23 15.5861622408 +41 55 21.153070020   14.63       ~ 3 0
37 NGC 898 GiG 02 23 20.3699516160 +41 57 04.893861924   13.84       ~ 35 1
38 LEDA 2207739 G 02 23 23.7 +42 51 48   13.49       ~ 3 0
39 LEDA 2190563 G 02 23 30.1 +41 59 54   14.47       ~ 3 0
40 LEDA 212966 G 02 23 33.4 +41 53 57   15.92       ~ 3 0
41 GSC2.3 NCIA030805 G 02 23 35.0 +42 55 27   18.20       ~ 2 0
42 LEDA 2207795 G 02 23 38.7 +42 51 57   14.22       ~ 3 0
43 LEDA 2190710 G 02 23 44.5 +42 00 24   15.65       ~ 2 0
44 LEDA 2188688 G 02 23 46.3 +41 53 39   15.01       ~ 3 0
45 GSC2.3 NCIA010627 G 02 23 49.0 +42 04 40   17.66       ~ 1 0
46 [SKM2012] A347 33 G 02 23 49.2 +41 53 03   16.17       ~ 2 0
47 2MASX J02235204+4247338 G 02 23 51.9987520224 +42 47 34.105806888   11.74       ~ 10 0
48 Z 538-59 Sy2 02 23 53.660 +42 12 21.89   12.71       ~ 8 0
49 LEDA 2204461 G 02 23 59.4 +42 42 28   14.05       ~ 3 0
50 LEDA 2191807 G 02 24 00.7 +42 04 03   13.80       ~ 3 0
51 ZOAG G140.57-17.14 G 02 24 01.0 +42 32 41   13.69       ~ 2 0
52 Z 538-60 GiG 02 24 01.8097817304 +41 59 46.010134464   14.8       ~ 16 0
53 GSC2.3 NCIA035836 G 02 24 05.0 +42 08 15   17.44       ~ 1 0
54 LEDA 2194768 G 02 24 07.7 +42 13 42   14.23       ~ 3 0
55 GSC2.3 NCIA030487 G 02 24 15.0 +42 53 59   16.29       ~ 1 0
56 GSC2.3 NCIA016766 G 02 24 18.0 +42 16 13   15.11       ~ 1 0
57 GALEXMSC J022419.63+420234.8 AG? 02 24 19.64 +42 02 34.8   16.39       ~ 3 0
58 GSC2.3 NCIA019215 G 02 24 24.0 +42 21 10   18.35       ~ 1 0
59 GSC2.3 NCIA025916 G 02 24 29.0 +42 38 37   17.34       ~ 1 0
60 LEDA 212970 AG? 02 24 32.368 +42 34 45.55   12.47       ~ 15 0
61 GSC2.3 NCIA010240 G 02 24 39.0 +42 03 24   17.01       ~ 1 0
62 GSC2.3 NCIA029460 G 02 24 42.0 +42 49 54   17.87       ~ 1 0
63 Z 538-64 Sy1 02 24 44.4275667984 +42 37 22.994908680   13.90       ~ 38 1
64 Z 538-63 GiC 02 24 47.248 +42 01 28.56   12.57   14.37   ~ 16 0
65 2MFGC 1875 G 02 24 48.613 +41 54 21.62   13.91       ~ 3 0
66 2MASX J02250957+4246335 G 02 25 09.6080832096 +42 46 33.184670412   11.80       ~ 5 0
67 LEDA 2192879 G 02 25 10.7 +42 07 36   17.45       ~ 3 0
68 [SKM2012] A347 66 G 02 25 12.5 +41 56 42   17.23       ~ 2 0
69 LEDA 2203248 G 02 25 12.9 +42 38 56   15.27       ~ 2 0
70 GSC2.3 NCIA005660 G 02 25 14.0 +41 54 47   17.33       ~ 1 0
71 NGC 906 rG 02 25 16.2782327136 +42 05 23.661719736   13.76 12.88     ~ 41 1
72 NGC 909 GiG 02 25 22.7683485720 +42 02 06.884310660   14.5       ~ 35 0
73 LEDA 2192614 G 02 25 27.5 +42 06 45   16.92       ~ 2 0
74 LEDA 2193030 AG? 02 25 33.9165951408 +42 08 04.052523588   12.84       ~ 11 0
75 ACO 347 ClG 02 25 50 +41 52.5           ~ 149 1
76 LEDA 2197501 AG? 02 26 03.26 +42 22 07.7   16.22       ~ 3 0
77 NAME Psc-Per Supercluster SCG 02 33.2 +41 37           ~ 444 1
78 NAME NGC 1023 Group GrG 02 39 37.9 +39 20 51           ~ 81 0
79 NAME Local Group GrG ~ ~           ~ 9325 0

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