2007A&A...470..123K


C.D.S. - SIMBAD4 rel 1.7 - 2019.09.23CEST12:28:15

2007A&A...470..123K - Astronomy and Astrophysics, volume 470, 123-135 (2007/7-4)

Optical BVI imaging and HI synthesis observations of the dwarf irregular galaxy ESO 364-G029.

KOUWENHOVEN M.B.N., BUREAU M., KIM S. and DE ZEEUW P.T.

Abstract (from CDS):

As part of an effort to enlarge the number of well-studied Magellanic-type galaxies, we obtained broadband optical imaging and neutral hydrogen radio synthesis observations of the dwarf irregular galaxy ESO364-G029. The optical morphology characteristically shows a bar-like main body with a one-sided spiral arm, an approximately exponential light distribution, and offset photometric and kinematic centers. The HI distribution is mildly asymmetric and, although slightly offset from the photometric center, roughly follows the optical brightness distribution, extending to over 1.2 Holmberg radii (where µB=26.5mag/arcsec2). In particular, the highest HI column densities closely follow the bar, one-arm spiral, and a third optical extension. The rotation is solid-body in the inner parts but flattens outside of the optical extent. The total HI flux FHI=23.1±1.2Jy.km/s, yielding a total HI mass MHI=(6.4±1.7)x108M (for a distance D=10.8±1.4Mpc) and a total HI mass-to-blue-luminosity ratio MHI/LB=(0.96±0.14)M/LB,☉ (distance independent). The HI data suggest a very complex small-scale HI structure, with evidence of large shells and/or holes, but deeper observations are required for a detailed study. Follow-up observations are also desirable for a proper comparison with the Large Magellanic Cloud, where despite an optical morphology very similar to ESO364-G029 the HI bears little resemblance to the optical.

Abstract Copyright:

Journal keyword(s): galaxies: individual: ESO364-G029 - galaxies: irregular - galaxies: photometry - galaxies: kinematics and dynamics - galaxies: structure - galaxies: ISM

Simbad objects: 40

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Number of rows : 40

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 IC 10 G 00 20 23.16 +59 17 34.7   13.6 9.5     ~ 978 0
2 UGC 199 G 00 20 51.82 +12 51 21.7   19       ~ 17 0
3 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10529 1
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9043 1
5 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5003 1
6 NGC 925 H2G 02 27 16.913 +33 34 43.97   10.69 10.12 9.55   ~ 678 1
7 UGC 2053 G 02 34 29.31 +29 44 59.4   15.7       ~ 48 0
8 NGC 1156 rG 02 59 42.8526900556 +25 14 28.350265697 12.13 12.32 11.74     ~ 271 1
9 NAME Magellanic Bridge HI 03 11 -77.5           ~ 304 1
10 NAME NGC 1566 Group GrG 04 20 00.6 -54 56 17           ~ 125 0
11 ESO 485-21 G 04 52 53.0 -25 14 48   13.27 12.76 12.50 13.0 ~ 35 0
12 NAME LMC Bar ? 05 22 08 -69 23.5           ~ 250 0
13 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14245 1
14 Shapley III As* 05 31 31 -66 46.4           ~ 35 0
15 RMC 136 Cl* 05 38 42.396 -69 06 03.36   9.63 9.50     ~ 1667 2
16 NGC 2090 GiG 05 47 01.8563832745 -34 15 01.657223780 12.17 11.70 11.20 10.43 11.0 ~ 155 1
17 ESO 364-29 G 06 05 44.0 -33 05 00   13.60   13.23 13.2 ~ 28 0
18 TYC 7075-383-1 * 06 05 47.5873253676 -33 04 41.366020657   12.05 11.37     ~ 2 0
19 2MASX J06071970-3412161 GiC 06 07 19.704 -34 12 16.15   14.3   13.74 14.0 ~ 30 0
20 NGC 2188 EmG 06 10 09.90 -34 06 17.4   12.10 11.82 11.39   ~ 88 0
21 ICRF J061635.9-345616 PaG 06 16 35.98056063 -34 56 16.5584624   19.98 18.0     ~ 52 1
22 UGC 3860 G 07 28 17.724 +40 46 11.36   15.50       ~ 129 0
23 NGC 2537 IG 08 13 14.643 +45 59 23.25 12.18 12.50 11.69 11.66   ~ 262 1
24 UGC 4305 IG 08 19 04.9878269182 +70 43 13.025604473 12.06 11.72 11.39 11.11   ~ 667 2
25 NAME M 81 Dwarf A G 08 23 55.1 +71 01 56   16.5       ~ 183 1
26 NAME M 81-82 Group GrG 09 55 +69.1           ~ 613 0
27 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 3879 5
28 UGC 5391 G 10 01 41.158 +37 14 51.69   14.9       ~ 32 0
29 NGC 3109 G 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 677 2
30 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 192 1
31 IC 2574 G 10 28 23.6204574649 +68 24 43.441365350 11.70 11.07 10.87 10.74   ~ 589 1
32 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 842 1
33 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5620 0
34 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 985 1
35 NGC 4618 GiP 12 41 32.8926165605 +41 09 03.051998352 11.03 11.22 10.78     ~ 284 2
36 NGC 4625 GiP 12 41 52.701 +41 16 25.39 12.74 12.92 12.35     ~ 298 2
37 NGC 5169 GiP 13 28 10.0401454001 +46 40 19.450993053   14.30       ~ 50 1
38 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3669 4
39 ICRF J193925.0-634245 Sy2 19 39 25.02671 -63 42 45.6255   18.87 18.37 17.64   ~ 908 1
40 NAME Local Group GrG ~ ~           ~ 6626 0

    Equat.    Gal    SGal    Ecl

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2019.09.23-12:28:15

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