2014ApJ...788..146S


Query : 2014ApJ...788..146S

2014ApJ...788..146S - Astrophys. J., 788, 146 (2014/June-3)

A survey of satellite galaxies around NGC 4258.

SPENCER M., LOEBMAN S. and YOACHIM P.

Abstract (from CDS):

We conduct a survey of satellite galaxies around the nearby spiral NGC 4258 by combining spectroscopic observations from the Apache Point Observatory 3.5 m telescope with Sloan Digital Sky Survey (SDSS) spectra. New spectroscopy is obtained for 15 galaxies. Of the 47 observed objects, we categorize 8 of them as probable satellites, 8 as possible satellites, and 17 as unlikely to be satellites. We do not speculate on the membership of the remaining 14 galaxies due to a lack of velocity and distance information. Radially integrating our best-fit NFW profile for NGC 4258 yields a total mass of 1.8x1012 M☉ within 200 kpc. We find that the angular distribution of the satellites appears to be random, and not preferentially aligned with the disk of NGC 4258. In addition, many of the probable satellite galaxies have blue u-r colors and appear to be star-forming irregulars in SDSS images; this stands in contrast to the low number of blue satellites in the Milky Way and M31 systems at comparable distances.

Abstract Copyright: ∼

Journal keyword(s): galaxies: dwarf - galaxies: individual: NGC 4258 - galaxies: kinematics and dynamics - galaxies: spiral - galaxies: structure - techniques: spectroscopic

Simbad objects: 62

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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 - 2026
#notes
1 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
2 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
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 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
7 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
8 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
9 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
10 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
11 NGC 4144 GiG 12 09 58.601 +46 27 25.85   12.17   11.50   ~ 260 0
12 LEDA 2302037 AG? 12 11 34.997 +47 39 27.17           ~ 9 0
13 MCG+08-22-083 AG? 12 11 55.708 +46 58 54.59   17       ~ 13 0
14 SDSS J121310.52+474105.7 G 12 13 10.526 +47 41 05.70           ~ 1 0
15 SDSS J121404.95+472610.0 G 12 14 04.953 +47 26 10.01           ~ 3 0
16 SDSS J121439.98+462111.8 AG? 12 14 39.986 +46 21 11.89           ~ 5 0
17 SDSS J121515.82+481255.1 G 12 15 15.826 +48 12 55.10           ~ 1 0
18 NGC 4218 GiP 12 15 46.1787155088 +48 07 52.628679084   13.2       ~ 96 0
19 LEDA 2299404 AG? 12 15 51.563 +47 30 16.94           ~ 11 0
20 MCG+08-22-086 AG? 12 16 02.227 +46 43 58.18   16       ~ 13 0
21 NGC 4220 G 12 16 11.7271475400 +47 53 00.116701188   12.4       ~ 166 0
22 SDSS J121637.46+470907.1 G 12 16 37.468 +47 09 07.15           ~ 3 0
23 Z 243-58 GiC 12 16 42.081 +46 04 43.56   15.49       ~ 67 1
24 SDSS J121702.37+465420.0 G 12 17 02.377 +46 54 20.04           ~ 3 0
25 SDSS J121706.39+465407.9 G 12 17 06.394 +46 54 07.93           ~ 3 0
26 NGC 4242 GiG 12 17 30.1835103480 +45 37 09.508940220   11.37 10.83     ~ 285 1
27 LEDA 2308426 AG? 12 17 31.959 +47 59 42.05           ~ 10 0
28 NGC 4248 GiG 12 17 49.8429850848 +47 24 33.085192824   13.12 12.53     ~ 129 1
29 SDSS J121759.40+465634.3 AG? 12 17 59.405 +46 56 34.34           ~ 5 0
30 SDSS J121806.49+462850.2 G 12 18 06.493 +46 28 50.28           ~ 3 0
31 LEDA 4320422 LSB 12 18 11.07 +46 55 00.7           ~ 26 1
32 SDSS J121818.47+474809.3 G 12 18 18.478 +47 48 09.33           ~ 3 0
33 SDSSCGB 42379.1 G 12 18 36.665 +46 04 58.64           ~ 2 0
34 LEDA 2272312 AG? 12 18 40.1439219360 +45 54 34.929984744           ~ 11 0
35 SDSS J121849.88+483132.4 G 12 18 49.877 +48 31 32.52           ~ 1 0
36 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
37 SDSS J121906.49+474348.8 LSB 12 19 06.493 +47 43 48.87     17.5   17.2 ~ 20 0
38 MCG+08-22-105 LSB 12 19 09.0802283352 +47 05 23.244084960   17       ~ 62 0
39 SDSS J121927.23+471845.1 G 12 19 27.246 +47 18 45.26           ~ 3 0
40 LEDA 166129 AG? 12 19 33.188 +47 27 05.50           ~ 19 0
41 SDSS J121936.00+470535.2 LSB 12 19 36.013 +47 05 35.36     18.2   17.7 ~ 10 0
42 MCG+08-23-004 AG? 12 20 16.243 +45 54 30.43   16.5       ~ 15 0
43 MCG+08-23-003 AG? 12 20 17.493 +48 08 15.66   16.5       ~ 26 0
44 NGC 4288 GiG 12 20 38.119 +46 17 27.67   13.6       ~ 187 0
45 LEDA 166131 LSB 12 20 40.018 +47 00 04.20     16.7   16.3 ~ 17 0
46 MCG+08-23-008 LSB 12 20 48.421 +47 49 33.32   16.5       ~ 25 0
47 SDSS J122054.98+464950.4 G 12 20 54.987 +46 49 50.41           ~ 10 0
48 SDSS J122115.22+454843.2 * 12 21 15.2332005192 +45 48 43.020641916           sd 2 0
49 NGC 4346 GiG 12 23 27.9622537560 +46 59 37.642074396   12.3       ~ 122 0
50 LEDA 2832112 G 12 23 46.2 +47 39 32           ~ 14 0
51 SDSS J122411.44+470720.9 G 12 24 11.443 +47 07 20.96           ~ 2 0
52 SDSS J122437.59+474231.4 G 12 24 37.597 +47 42 31.42           ~ 1 0
53 SDSS J122506.06+471851.1 G 12 25 06.051 +47 18 51.19           ~ 2 0
54 NGC 4389 GiG 12 25 35.098 +45 41 04.81   12.64   11.46   ~ 157 0
55 Z 244-18 bCG 12 26 15.69 +48 29 38.3   15.3       ~ 364 0
56 SDSS J122615.72+482938.6 H2G 12 26 15.704 +48 29 38.42           ~ 5 0
57 SDSS J122727.34+463302.2 G 12 27 27.338 +46 33 02.23           ~ 1 0
58 SDSS J122728.20+463248.3 G 12 27 28.205 +46 32 48.28           ~ 1 0
59 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
60 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
61 NGC 7331 LIN 22 37 04.0506038088 +34 24 56.800076508 10.65 10.35 9.48     ~ 1284 2
62 NAME Local Group GrG ~ ~           ~ 9325 0

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