2008A&A...486..131J


C.D.S. - SIMBAD4 rel 1.7 - 2019.09.17CEST13:18:06

2008A&A...486..131J - Astronomy and Astrophysics, volume 486, 131-142 (2008/7-4)

The Hα Galaxy Survey. VI. Star-forming companions of nearby field galaxies.

JAMES P.A., O'NEILL J. and SHANE N.S.

Abstract (from CDS):

We searched for star-forming satellite galaxies that are close enough to their parent galaxies to be considered analogues of the Magellanic Clouds. Our search technique relied on the detection of the satellites in continuum-subtracted narrow-band Hα imaging of the central galaxies, which removes most of the background and foreground line-of-sight companions, thus giving a high probability that we are detecting true satellites. The search was performed for 119 central galaxies at distances between 20 and 40Mpc, although spatial incompleteness means that we have effectively searched 53 full satellite-containing volumes. We find only 9 ``probable'' star-forming satellites, around 9 different central galaxies, and 2 more ``possible'' satellites. After incompleteness correction, this is equivalent to 0.17/0.21 satellites per central galaxy. This frequency is unchanged whether we consider all central galaxy types or just those of Hubble types S0a-Sc, i.e. only the more luminous and massive spiral types. The satellites found are generally similar to the Magellanic Clouds and to field Sm and Im galaxies, in terms of their normalised star formation rates. However, this conclusion is somewhat circular as the similarity of properties to known Sm/Im galaxies was used as a classification criterion. The Small Magellanic Cloud is just below the median values of both star formation rate and R-band luminosity of the 9 probable satellites. The Large Magellanic Cloud, however, has a higher R-band luminosity than any of the 9 and is only exceeded in star formation rate by the one satellite that appears to be undergoing a tidally-induced starburst. Thus the Milky Way appears to be quite unusual, both in having two star-forming satellite galaxies and in the high luminosity of the Large Magellanic Cloud.

Abstract Copyright:

Journal keyword(s): galaxies: general - galaxies: spiral - galaxies: irregular - galaxies: stellar content - galaxies: statistics - galaxies: Magellanic Clouds

CDS comments: UM 007 NED 01 = USNO-A2.0 0900-20497356; NGC 2406B not identified

Simbad objects: 29

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Number of rows : 29

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NAME Magellanic Stream HVC 00 32 -30.0           ~ 764 1
2 M 110 GiG 00 40 22.0544552438 +41 41 07.496294862   8.92 8.07     ~ 1178 1
3 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 1963 2
4 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10525 1
5 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9041 1
6 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5335 1
7 UGC 2603 G 03 19 15.3 +81 20 47   17       ~ 16 0
8 2MASX J03192345+8116238 G 03 19 23.455 +81 16 23.86           ~ 3 0
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14239 1
10 RMC 136 Cl* 05 38 42.396 -69 06 03.36   9.63 9.50     ~ 1667 2
11 UGC 3530 G 06 46 31.6118358649 +60 20 25.422070428   14.1       ~ 35 0
12 UGC 4260 G 08 11 08.311 +46 27 56.33   14.3       ~ 35 0
13 NGC 2543 GiP 08 12 57.955 +36 15 16.23   12.70       ~ 123 1
14 2MASX J08125835+3611542 GiP 08 12 58.477 +36 11 53.90   16.5       ~ 12 0
15 NGC 2551 GiG 08 24 50.2696914657 +73 24 43.360233657   13.10 12.11     ~ 67 1
16 NGC 2604 GiP 08 33 23.057 +29 32 19.03   15.38 14.92     ~ 75 0
17 NGC 2648 GiP 08 42 39.825 +14 17 07.81   12.80 11.82     ~ 74 0
18 MCG+02-22-006 GiP 08 42 48.2067022709 +14 15 54.848920378   15.16 14.23     ~ 41 0
19 NGC 2633 GiP 08 48 04.6279110889 +74 05 55.032130996   12.4       ~ 144 1
20 2MASX J08482381+7402176 G 08 48 23.6410559839 +74 02 16.945850037           ~ 5 0
21 VV 294b G 10 30.3 +70 02           ~ 1 0
22 UGC 5688 PaG 10 30 24.81 +70 03 01.8   14.6       ~ 35 0
23 NGC 3712 GiP 11 31 09.354 +28 33 59.26   14.25       ~ 32 0
24 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5618 0
25 NGC 5921 G 15 21 56.561 +05 04 13.94   12.7       ~ 245 0
26 NGC 5962 GiP 15 36 31.6808963190 +16 36 27.929023082 12.04 11.98 11.34     ~ 217 1
27 NGC 5964 EmG 15 37 36.2079075769 +05 58 26.341551620   12.45 11.82 11.48 10.89 ~ 108 0
28 NGC 7479 Sy2 23 04 56.668 +12 19 22.36 11.74 11.60 10.85 10.47 9.66 ~ 647 2
29 NGC 7756 IG 23 48 45.5501892758 +04 10 16.303625797   13.9       ~ 87 0

    Equat.    Gal    SGal    Ecl

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2019.09.17-13:18:06

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