2013MNRAS.434.2491G

Query : 2013MNRAS.434.2491G

2013MNRAS.434.2491G - Mon. Not. R. Astron. Soc., 434, 2491-2502 (2013/September-3)

The chemical case for no winds in dwarf irregular galaxies.

GAVILAN M., ASCASIBAR Y., MOLLA M. and DIAZ A.I.

Abstract (from CDS):

We argue that isolated gas-rich dwarf galaxies - in particular, dwarf irregular (dIrr) galaxies - do not necessarily undergo significant gas loss. Our aim is to investigate whether the observed properties of isolated, gas-rich dwarf galaxies, not affected by external environmental processes, can be reproduced by self-consistent chemophotometric infall models with continuous star formation histories and no mass or metal loss. The model is characterized by the total mass of primordial gas available to the object, its characteristic collapse time-scale, and a constant star formation efficiency. A grid of 144 such models has been computed by varying these parameters, and their predictions (elemental abundances, stellar and gas masses, photometric colours) have been compared with a set of observations of dIrr galaxies obtained from the literature. It is found that the models with moderate to low efficiency are able to reproduce most of the observational data, including the relative abundances of nitrogen and oxygen.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): galaxies: abundances - galaxies: dwarf - galaxies: evolution - galaxies: formation

Simbad objects: 63

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Number of rows : 63
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 UGC 12894 G 00 00 22.55 +39 29 43.5   17       ~ 36 0
2 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
3 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
4 Z 434-1 AG? 00 20 05.20 +10 52 48.0   15.6       ~ 87 1
5 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
6 UGC 290 AG? 00 29 08.37 +15 53 56.8   18       ~ 54 0
7 MCG+00-02-062 AG? 00 30 04.10 +03 30 47.0   18       ~ 38 0
8 Z 435-14 AG? 00 51 12.2110178784 +12 01 31.222059888 15.72 15.38 15.03 14.86   ~ 47 0
9 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
10 Z 410-23 LSB 01 01 25.171 +07 37 33.57   15.7       ~ 84 0
11 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
12 Z 458-20 AG? 01 07 23.0321 +16 41 00.988 15.01 14.55 14.07     ~ 148 0
13 Z 436-33 AG? 01 21 18.90 +12 24 43.0 15.36 14.82 14.36 12.87   ~ 112 0
14 Z 460-6 AG? 01 32 42.5190557016 +18 19 01.514434548 15.03 14.56 14.13 13.89   ~ 101 0
15 UGC 1175 LSB 01 39 56.45832 +11 05 49.8336   17       ~ 32 0
16 UGCA 20 bCG 01 43 14.6 +19 58 51   16       ~ 55 0
17 Z 503-26 LSB 01 49 31.71 +32 35 16.2   13.0       ~ 171 0
18 Z 505-6 GiG 02 33 18.20 +33 29 28.0   14.9   13.59   ~ 91 0
19 UGC 2684 AG? 03 20 23.71 +17 17 45.1   18       ~ 78 0
20 UGC 2984 LSB 04 13 12.403 +13 25 19.10   17       ~ 54 0
21 NGC 1569 rG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1297 3
22 NGC 1560 GiG 04 32 49.087 +71 52 59.20   12.1       ~ 264 0
23 MCG+00-13-014 GiC 04 48 34.50 +00 14 30.0   14.7   13.9 14.4 ~ 68 0
24 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
25 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
26 MCG+09-12-027 AG? 07 04 50.94 +56 31 13.8   16.0       ~ 39 0
27 UGC 3672 AG? 07 06 27.336 +30 19 23.61   17       ~ 43 0
28 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 801 0
29 Z 178-8 AG? 07 57 25.948 +35 56 22.05   15.5       ~ 33 0
30 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 812 2
31 Z 331-51 GiG 08 37 03.00 +69 46 31.0 15.70 15.46 14.98 14.89   ~ 316 0
32 Z 7-25 Sy1 09 44 01.8742171440 -00 38 31.993352700   15.5       ~ 89 0
33 UGC 5288 PaG 09 51 17.241 +07 49 32.05 15.07 14.65 14.18 13.99   ~ 95 0
34 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
35 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
36 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
37 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
38 IC 2574 AG? 10 28 23.6148831408 +68 24 43.440012756 11.70 11.07 10.87 10.74   ~ 703 1
39 UGC 5716 AG? 10 31 43.26364 +25 18 27.3731   17       ~ 82 0
40 Z 154-31 AG? 10 36 43.1428583040 +31 32 50.189204040   15.6   15.04   ~ 121 0
41 Z 184-6 AG? 10 42 42.787 +34 26 57.39   13.31 13.09 12.84 12.85 ~ 173 0
42 Z 351-62 bCG 11 27 59.90 +78 59 39.0   14.50       ~ 346 1
43 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
44 NAME CVn I dwA GiC 12 38 40.06 +32 46 00.5 16.91 16.66 16.73 16.62   ~ 242 0
45 NGC 4789A GiC 12 54 05.248 +27 08 58.67 14.37 14.23 13.95 13.84   ~ 614 1
46 Z 71-87 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 475 0
47 UGCA 357 AG? 13 26 13.800 +37 46 14.67   17       ~ 27 0
48 Z 218-34 AG? 13 39 53.75 +40 44 25.3 15.37 14.56 14.20 14.10   ~ 165 0
49 NGC 5408 EmG 14 03 20.907 -41 22 39.75   12.59   11.96 12.2 ~ 368 3
50 Z 133-19 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 296 0
51 Z 247-26 AG? 14 24 43.21 +44 31 41.8 14.24 13.54 13.17 13.07   ~ 217 0
52 Z 163-86 bCG 14 36 08.833 +28 26 58.98   15.4       ~ 53 0
53 Z 319-21 AG? 15 41 47.85 +67 15 15.3 15.71 15.22 14.81 14.44   ~ 93 0
54 Z 168-21 SBG 16 33 47.1783414768 +28 59 01.521191184   13.30 13.96     ~ 140 1
55 IC 4662 bCG 17 47 09.192 -64 38 19.25   11.75 11.1 10.45   ~ 253 4
56 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
57 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
58 NGC 7077 AG? 21 29 59.634 +02 24 51.75 14.05 14.25 13.67 13.23 12.86 ~ 106 0
59 MCG+02-55-015 LSB 21 49 28.40 +14 13 52.0   17       ~ 73 0
60 IC 5152 rG 22 02 41.521 -51 17 47.20   11.03 10.9 10.19   ~ 273 1
61 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
62 Z 497-44 AG? 23 38 14.758 +30 42 33.24   15.1       ~ 57 0
63 NAME Local Group GrG ~ ~           ~ 9325 0

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