2003A&A...399...63H

Query : 2003A&A...399...63H

2003A&A...399...63H - Astronomy and Astrophysics, volume 399, 63-76 (2003/2-3)

The metallicity-luminosity relationship of dwarf irregular galaxies. II. A new approach.

HIDALGO-GAMEZ A.M., SANCHEZ-SALCEDO F.J. and OLOFSSON K.

Abstract (from CDS):

The nature of a possible correlation between metallicity and luminosity for dwarf irregular galaxies, including those with the highest luminosities, has been explored using simple chemical evolutionary models. Our models depend on a set of free parameters in order to include infall and outflows of gas and covering a broad variety of physical situations. Given a fixed set of parameters, a non-linear correlation between the oxygen abundance and the luminosity may be established. This would be the case if an effective self-regulating mechanism between the accretion of mass and the wind energized by the star formation could lead to the same parameters for all the dwarf irregular galaxies. In the case that these parameters were distributed in a random manner from galaxy to galaxy, a significant scatter in the metallicity-luminosity diagram is expected. Comparing with observations, we show that only variations of the stellar mass-to-light ratio are sufficient to explain the observed scattering and, therefore, the action of a mechanism of self-regulation cannot be ruled out. The possible origin of discrepancies in the metallicity-luminosity correlation found by different authors is discussed.

Abstract Copyright: ∼

Journal keyword(s): ISM: abundances - galaxies: dwarf - galaxies: ISM - galaxies: irregular

CDS comments: Table 2 : ESO 245-G05 12, 19 = [M96b] AO 0143-43 12, 19.

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 - 2024 		#notes
1 NAME Wolf-Lundmark-Melotte G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 691 2
2 NGC 55 GiG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 778 2
3 [BGR2000] Br 1 HII 00 20 17.4 +59 18 40           ~ 14 0
4 IC 10 G 00 20 25.50 +59 17 17.0   13.6 9.5     ~ 1118 1
5 IC 1574 AG? 00 43 03.82 -22 14 48.8 15.25 14.73 14.35 14.24 14.2 ~ 129 1
6 ESO 540-31 G 00 49 49.3 -21 00 58 16.11 15.64 15.36 14.8 15.5 ~ 133 1
7 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1235 2
8 ESO 245-5 AG? 01 45 03.74 -43 35 52.9 13.45 12.92 12.63 12.51 12.8 ~ 140 1
9 [M96b] AO 0143-43 12 HII 01 45 07.3 -43 36 15           ~ 4 0
10 [M96b] AO 0143-43 19 HII 01 45 12.5 -43 36 45           ~ 3 0
11 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1241 3
12 UGCA 105 GiG 05 14 15.3240846648 +62 34 47.964904644   15.3       ~ 84 1
13 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17432 0
14 NGC 2363A HII 07 28 42.8 +69 11 21           ~ 564 3
15 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 769 0
16 UGC 3974 G 07 41 56.3059298112 +16 48 07.451632188   15.4       ~ 225 0
17 UGC 4115 G 07 57 01.027 +14 23 47.66   16.0       ~ 152 0
18 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 769 2
19 UGC 4459 GiG 08 34 07.20 +66 10 54.0 15.39 15.03 14.70 14.49   ~ 338 2
20 Mrk 116 PaG 09 34 02.1 +55 14 25           ~ 1106 1
21 UGC 5139 LSB 09 40 32.33 +71 10 56.0 14.53 14.00 13.66 13.41   ~ 356 1
22 NAME Leo A G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 615 0
23 NAME Sextans B H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 528 0
24 NAME Sex A H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 727 2
25 IC 2574 AG? 10 28 23.6148831408 +68 24 43.440012756 11.70 11.07 10.87 10.74   ~ 665 1
26 Mrk 178 bCG 11 33 29.12 +49 14 17.4 14.69 14.61 14.25 14.17   ~ 230 1
27 UGC 6817 AG? 11 50 52.984 +38 52 50.92   13.72 13.9 13.39   ~ 166 0
28 NGC 4068 AG? 12 04 03.265 +52 35 26.05   13.29   12.77   ~ 180 0
29 NGC 4163 LSB 12 12 09.34 +36 10 08.1 14.33 13.70 13.2 12.98   ~ 222 0
30 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 965 1
31 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1177 1
32 UGC 7559 GiP 12 27 05.566 +37 08 30.39   14.19   13.55   ~ 205 0
33 UGC 7577 GiG 12 27 40.90 +43 29 44.0 13.75 13.10 12.7 12.33   ~ 255 0
34 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1125 1
35 UGC 7605 GiG 12 28 38.743 +35 43 02.91 15.50 15.12 14.86 14.78   ~ 123 1
36 UGC 7698 GiC 12 32 54.5 +31 32 30   13.50   13.03   ~ 169 0
37 IC 3687 GiG 12 42 15.1540831512 +38 30 05.844632940   15.5       ~ 145 0
38 ESO 381-20 AG? 12 46 00.67 -33 50 13.0   14.24   13.50 14.0 ~ 88 0
39 UGC 8024 GiC 12 54 05.248 +27 08 58.67 14.37 14.23 13.95 13.84   ~ 592 1
40 UGC 8091 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 463 0
41 UGC 8201 AG? 13 06 24.85 +67 42 25.0 14.08 13.61 13.08 12.98   ~ 255 1
42 UGC 8215 AG? 13 08 03.552 +46 49 40.02   17       ~ 77 0
43 UGC 8308 AG? 13 13 22.839 +46 19 21.71   17       ~ 131 1
44 UGC 8320 AG? 13 14 27.997 +45 55 11.14 13.63 13.26 13.02 12.81   ~ 282 0
45 UGC 8331 AG? 13 15 29.753 +47 29 58.69   15.6       ~ 107 1
46 ESO 324-24 LSB 13 27 37.6117 -41 28 44.128   12.91   12.13 12.3 ~ 100 0
47 UGC 8508 AG? 13 30 44.8682655624 +54 54 38.522749824 14.72 14.25 13.90 13.75   ~ 195 0
48 UGC 8651 AG? 13 39 53.75 +40 44 25.3 15.37 14.56 14.20 14.10   ~ 155 0
49 UGC 8760 AG? 13 50 51.3127548768 +38 01 14.958828876 15.56 14.78   14.33   ~ 148 0
50 NGC 5408 EmG 14 03 20.907 -41 22 39.75   12.59   11.96 12.2 ~ 350 3
51 UGC 9128 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 283 0
52 UGC 9240 AG? 14 24 43.21 +44 31 41.8 14.24 13.54 13.17 13.07   ~ 200 0
53 NAME IC 4662 D PoG 17 46 50 -64 39.0           ~ 8 0
54 [HMM90] A1 HII 17 46 59 -64 38.7           ~ 13 0
55 [HMM90] A2 HII 17 46 59 -64 38.7           ~ 13 0
56 IC 4662 bCG 17 47 09.192 -64 38 19.25   11.75 11.1 10.45   ~ 235 4
57 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 307 1
58 [H25] V HII 19 44 52.84 -14 43 09.8           ~ 64 0
59 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1562 0
60 KD D26 HII 19 45 05.2 -14 43 13           ~ 52 0
61 NAME Aquarius Dwarf G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 445 1
62 IC 5152 AG? 22 02 41.521 -51 17 47.20   11.03 10.9 10.19   ~ 252 1
63 NAME PegDIG G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 474 1

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