2007AJ....134.1447H

Query : 2007AJ....134.1447H

2007AJ....134.1447H - Astron. J., 134, 1447-1458 (2007/October-0)

Diffuse ionized gas in the dwarf irregular galaxy DDO 53.

HIDALGO-GAMEZ A.M.

Abstract (from CDS):

The spectral characteristics throughout the dwarf irregular galaxy DDO 53 are studied. The results are very similar to those for other irregular galaxies: high excitation and low values of the [S II]/Hα ratio. The most likely ionization source is photon leakage from the classical H II regions, without any other source, although the interstellar medium of the galaxy is quite perturbed. Moreover, the physical conditions throughout the galaxy do not change very much because both the photon leakage percentage and the ionization temperature are very similar. In addition, the determined metal content for two H II regions indicates that DDO 53 is a low-metallicity galaxy.

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Journal keyword(s): galaxies: individual (DDO 53) - Galaxies: Irregular - Galaxies: Stellar Content - ISM: H II Regions

Simbad objects: 20

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Number of rows : 20
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 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
2 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
4 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
5 [SHK90] 5 HII 08 34 03.64 +66 10 40.4           ~ 2 0
6 [CVL2009] UGC 4459-4 HII 08 34 03.73 +66 10 38.0           ~ 4 0
7 [SHK90] 8 HII 08 34 06.09 +66 10 17.5           ~ 2 0
8 [SHK90] 9 HII 08 34 06.86 +66 11 05.1           ~ 2 0
9 Z 311-8 GiG 08 34 07.20 +66 10 54.0 15.39 15.03 14.70 14.49   ~ 357 2
10 [CVL2009] UGC 4459-5 HII 08 34 07.33 +66 10 52.0   20.63       ~ 4 0
11 [SHK90] 11 HII 08 34 07.41 +66 10 38.7   21.91       ~ 3 0
12 [SHK90] 13 HII 08 34 08.72 +66 10 50.5   21.85       ~ 2 0
13 [CVL2009] UGC 4459-3 HII 08 34 11.06 +66 10 21.1   21.20       ~ 4 0
14 [SHK90] 17 HII 08 34 11.24 +66 10 09.2   20.87       ~ 2 0
15 NAME M 81-82 Group GrG 09 55 +69.1           ~ 758 0
16 Z 71-87 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 475 0
17 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
18 Z 247-26 AG? 14 24 43.21 +44 31 41.8 14.24 13.54 13.17 13.07   ~ 217 0
19 IC 4662 bCG 17 47 09.192 -64 38 19.25   11.75 11.1 10.45   ~ 253 4
20 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0

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