2001AJ....122..825B

Query : 2001AJ....122..825B

2001AJ....122..825B - Astron. J., 122, 825-829 (2001/August-0)

On the neutral gas content and environment of NGC 3109 and the Antlia dwarf galaxy.

BARNES D.G. and DE BLOK W.J.G.

Abstract (from CDS):

As part of a continuing survey of nearby galaxies, we have mapped the neutral gas content of the low surface brightness Magellanic-type galaxy NGC 3109 and its environment, including the Antlia dwarf galaxy, at unprecedented velocity resolution and brightness sensitivity. The H I mass of NGC 3109 is measured to be 3.8±0.5x108 M☉. A substantial warp in the disk of NGC 3109 is detected in the H I emission image in the form of an extended low surface brightness feature. We report a positive detection in H I of the nearby Antlia dwarf galaxy and measure its total neutral gas mass to be 6.8±1.4x105 M☉. We show the warp in NGC 3109 to lie at exactly the same radial velocity as the gas in the Antlia dwarf galaxy and speculate that Antlia disturbed the disk of NGC 3109 during a mild encounter ∼1 Gyr in the past. H I data for a further eight galaxies detected in the background are presented.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual (Antlia dwarf, NGC 3109) - Galaxies: Interactions - Galaxies: Local Group

Simbad objects: 19

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Number of rows : 19
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 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 NAME Magellanic Stream HVC 00 32 -30.0           ~ 1079 1
3 MCG-06-02-022a EmG 00 37 41.1133192392 -33 42 58.515101748   19.26   18.52   ~ 314 1
4 NGC 1313 AG? 03 18 16.046 -66 29 53.74   10.06 10.0 9.40 10.4 ~ 723 2
5 NGC 3037 EmG 09 51 24.00507 -27 00 40.0860   13.66   12.77 13.4 ~ 41 1
6 NGC 3056 Sy2 09 54 32.8538928504 -28 17 53.628683496   12.61   11.00 12.0 ~ 75 0
7 MCG-05-24-010 Sy2 09 58 46.223 -28 37 18.86   13.43   12.25 13.0 ~ 49 2
8 ESO 435-20 rG 09 59 21.226 -28 08 00.04   14.42 14.08 13.33   ~ 84 2
9 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
10 MCG-04-24-014 AG? 10 03 41.840 -27 01 40.12   13.32   12.81 13.3 ~ 64 1
11 ESO 499-38 AG? 10 03 50.15 -26 36 45.9   15.68       ~ 14 0
12 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 221 1
13 NGC 3113 LSB 10 04 26.118 -28 26 38.46   13.35   12.15 12.7 ~ 52 0
14 NGC 3137 Sy2 10 09 07.478 -29 03 51.48   12.21   10.80 11.9 ~ 83 0
15 NAME NGC 3175 Group GrG 10 10 13.3 -28 49 48           ~ 11 0
16 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
17 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1364 1
18 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
19 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1173 1

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