2003AJ....125..146L

Query : 2003AJ....125..146L

2003AJ....125..146L - Astron. J., 125, 146-165 (2003/January-0)

Uncovering additional clues to galaxy evolution. I. Dwarf irregular galaxies in the field.

LEE H., McCALL M.L., KINGSBURGH R.L., ROSS R. and STEVENSON C.C.

Abstract (from CDS):

In order to recognize environmental effects on the evolution of dwarf galaxies in clusters of galaxies, it is first necessary to quantify the properties of objects that have evolved in relative isolation. With oxygen abundance as the gauge of metallicity, two key diagnostics of the evolution of dwarf irregular galaxies in the field are reexamined: the metallicity-luminosity relationship and the metallicity-gas fraction relationship. Gas fractions are evaluated from the masses of luminous components only, i.e., constituents of the nucleogenetic pool.
Result. from new optical spectroscopy obtained for H II regions in five dwarf irregular galaxies in the local volume are incorporated into a new analysis of field dwarfs with [O III] λ4363 detections and good distances. The updated fit to the metallicity-luminosity relationship is consistent with results reported in the literature. The fit to the metallicity-gas fraction relation shows an excellent correlation consistent with expectations of the simple ``closed box'' model of chemical evolution. The simplest explanation consistent with the data is that flow rates are zero, although the observations allow for the possibility of modest flows. The derived oxygen yield is one-quarter of the value for the solar neighborhood.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Abundances - Galaxies: Dwarf - Galaxies: Evolution - Galaxies: Irregular

Nomenclature: Table 6: [LMK2003] Ho II-N (Nos 1-5). Table 7: [LMK2003] IC 10-N (Nos 1-6). Table 8: [LMK2003] NGC 1560-N (Nos 1-7). Table 9: [LMK2003] NGC 3109-N (Nos 1-4). Table 10: [LMK2003] UGC 6456-N (Nos 1-2).

CDS comments: Objects DDO 187-N are [VHS97] UGC 9128-N in SIMBAD.

Simbad objects: 59

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Number of rows : 59
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   ~ 690 2
2 NGC 55 GiG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 778 2
3 IC 10 G 00 20 25.50 +59 17 17.0   13.6 9.5     ~ 1118 1
4 [BGR2000] Br 5 HII 00 20 25.6 +59 17 26           ~ 10 0
5 [HL90] 111b HII 00 20 26.0 +59 17 42           ~ 9 0
6 [HL90] 111c HII 00 20 26.3 +59 17 57           ~ 16 0
7 [HL90] 111e HII 00 20 26.7 +59 17 52           ~ 8 0
8 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11139 1
9 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1235 2
10 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1240 3
11 NGC 1560 GiG 04 32 49.087 +71 52 59.20   12.1       ~ 252 0
12 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17420 0
13 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4933 2
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 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 768 2
17 [ZEH2003] RX J0819.4+7042 4 HII 08 19 27.0 +70 41 57   15.6       ~ 11 0
18 [LMK2003] Ho II-1 HII 08 19 27.20 +70 42 00.0           ~ 2 0
19 [LMK2003] Ho II-3 HII 08 19 27.20 +70 42 00.0           ~ 2 0
20 [LMK2003] Ho II-2 HII 08 19 27.20 +70 42 00.0           ~ 2 0
21 [CVL2009] UGC 4305-2 HII 08 19 27.77 +70 42 07.9   17.4       ~ 7 0
22 [LMK2003] Ho II-4 HII 08 19 28.40 +70 42 12.0           ~ 2 0
23 [CVL2009] UGC 4305-3 HII 08 19 28.88 +70 42 19.5   13.4   12.9   ~ 16 0
24 [ZEH2003] RX J0819.4+7042 12 HII 08 19 29.0 +70 42 47   19.1       ~ 9 0
25 HK Ho II 2 HII 08 19 29.0 +70 43 01           ~ 9 0
26 [LMK2003] Ho II-6 HII 08 19 29.20 +70 42 53.0           ~ 2 0
27 [LMK2003] Ho II-7 HII 08 19 29.20 +70 42 53.0           ~ 2 0
28 [LMK2003] Ho II-8 HII 08 19 29.20 +70 42 53.0           ~ 2 0
29 NAME Leo A G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 615 0
30 NAME Sextans B H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 528 0
31 [BCP93] F1 H3 HII 10 03 01.3 -26 08 37           ~ 6 0
32 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 769 2
33 NAME Sex A H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 727 2
34 IC 2574 AG? 10 28 23.6148831408 +68 24 43.440012756 11.70 11.07 10.87 10.74   ~ 664 1
35 UGC 6456 bCG 11 27 59.90 +78 59 39.0   14.50       ~ 335 1
36 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 965 1
37 UGC 8091 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 463 0
38 NGC 5408 EmG 14 03 20.907 -41 22 39.75   12.59   11.96 12.2 ~ 349 3
39 [VHS97] UGC 9128-1 HII 14 15 54.9 +23 03 00           ~ 2 0
40 UGC 9128 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 283 0
41 IC 4662 bCG 17 47 09.192 -64 38 19.25   11.75 11.1 10.45   ~ 235 4
42 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1562 0
43 [LMK2003] NGC 1560-4 HII ~ ~           ~ 1 0
44 [LMK2003] NGC 1560-3 HII ~ ~           ~ 1 0
45 LPRST IC 10 1 HII ~ ~           ~ 3 0
46 [LMK2003] UGC 6456-1 HII ~ ~           ~ 1 0
47 [LMK2003] UGC 6456-2 HII ~ ~           ~ 1 0
48 [LMK2003] NGC 1560-2 HII ~ ~           ~ 1 0
49 NAME M.L.McCall 1 HII ~ ~           ~ 1 0
50 [LMK2003] IC 10-6 HII ~ ~           ~ 1 0
51 [LMK2003] IC 10-3 HII ~ ~           ~ 1 0
52 [LMK2003] NGC 3109-3 HII ~ ~           ~ 1 0
53 [LMK2003] IC 10-2 HII ~ ~           ~ 2 0
54 [LMK2003] NGC 3109-2 HII ~ ~           ~ 1 0
55 [LMK2003] NGC 3109-1 HII ~ ~           ~ 1 0
56 [LMK2003] NGC 3109-4 HII ~ ~           ~ 1 0
57 [LMK2003] NGC 1560-7 HII ~ ~           ~ 1 0
58 [LMK2003] NGC 1560-6 HII ~ ~           ~ 1 0
59 [LMK2003] NGC 1560-5 HII ~ ~           ~ 1 0

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