2001A&A...369..797H

Query : 2001A&A...369..797H

2001A&A...369..797H - Astronomy and Astrophysics, volume 369797-811 (2001/4-3)

The chemical abundances in a sample of dwarf irregular galaxies. II. The case of IC 4662 and ESO 245-G05.

HIDALGO-GAMEZ A.M., MASEGOSA J. and OLOFSSON K.

Abstract (from CDS):

Optical spectra of HII regions of two dwarf irregular galaxies are presented. The objects are IC 4662 and ESO 245-G05. Chemical abundances were derived in all the HII regions where the forbidden oxygen line [OIII]λ4363Å was detected. For spectra with the highest quality, a study of the spatial distribution of chemical elements in these objects were made. Generally, the chemical composition is largely constant within the HII regions studied. Some differences are found but could be attributed varying physical properties, e.g. small scale fluctuations in the temperature of the region. A comparison of the chemical abundances between different HII regions within the galaxies is made for IC 4662 and ESO 245-G05, where one of the HII regions clearly shows deviating chemical abundances.

Abstract Copyright: ∼

Journal keyword(s): galaxies: evolution - galaxies: irregular - galaxies: stellar content - interstellar medium: HII regions: general - galaxies: individual: IC 4662, ESO 245-G05

Errata: Erratum vol.376 p.386, 2001

CDS comments: Table 1: IC 4661 misprint for IC 4662

Simbad objects: 28

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Number of rows : 28
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 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
3 [M96b] AO 0143-43 1 HII 01 44 54.2 -43 34 17           ~ 2 0
4 [M96b] AO 0143-43 2 HII 01 44 54.4 -43 34 18           ~ 2 0
5 [M96b] AO 0143-43 3 HII 01 44 54.5 -43 34 16           ~ 2 0
6 [M96b] AO 0143-43 4 HII 01 44 54.8 -43 34 17           ~ 2 0
7 [M96b] AO 0143-43 5 HII 01 44 57.0 -43 36 06           ~ 2 0
8 [M96b] AO 0143-43 6 HII 01 44 57.5 -43 35 59           ~ 2 0
9 [M96b] AO 0143-43 7 HII 01 44 57.7 -43 36 04           ~ 2 0
10 [M96b] AO 0143-43 8 HII 01 44 58.1 -43 34 27           ~ 2 0
11 [M96b] AO 0143-43 9 HII 01 44 58.7 -43 34 27           ~ 2 0
12 [M96b] AO 0143-43 10 HII 01 44 59.3 -43 34 20           ~ 2 0
13 MCG-07-04-032 AG? 01 45 03.74 -43 35 52.9 13.45 12.92 12.63 12.51 12.8 ~ 152 1
14 [M96b] AO 0143-43 12 HII 01 45 07.3 -43 36 15           ~ 4 0
15 [M96b] AO 0143-43 19 HII 01 45 12.5 -43 36 45           ~ 3 0
16 CD-28 595 PM* 01 54 50.2703221766 -27 28 35.739139915   12.06 11.51     ~ 138 0
17 LP 995-86 Pe* 03 48 22.6125679056 -39 08 37.013680104   13.61 13.15     F 104 0
18 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
19 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
20 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
21 NGC 6300 Sy2 17 16 59.5418094960 -62 49 13.946588832   10.88 13.08 9.44 10.2 ~ 478 1
22 NAME IC 4662 D PoG 17 46 50 -64 39.0           ~ 8 0
23 [HMM90] A2 HII 17 46 59 -64 38.7           ~ 14 0
24 [HMM90] A1 HII 17 46 59 -64 38.7           ~ 14 0
25 IC 4662 bCG 17 47 09.192 -64 38 19.25   11.75 11.1 10.45   ~ 253 4
26 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
27 [HMM90] C PoG ~ ~           ~ 6 0
28 [HMM90] B PoG ~ ~           ~ 7 0

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