2003ApJS..145..225V

Query : 2003ApJS..145..225V

2003ApJS..145..225V - Astrophys. J., Suppl. Ser., 145, 225-244 (2003/April-0)

Spectroscopy of dwarf galaxies in the Virgo cluster. I. Data, chemical abundances, and ionization structure.

VILCHEZ J.M. and IGLESIAS-PARAMO J.

Abstract (from CDS):

Long-slit spectroscopy has been obtained for a sample of 22 blue dwarf galaxies selected in the direction of the Virgo Cluster, as part of a larger sample of Virgo blue dwarf galaxies for which deep Hα imaging has been collected. Most of the galaxies in the present sample are classified as BCDs or dwarf Irregulars in the Virgo Cluster Catalog. Line fluxes, Hβ equivalent widths, extinction coefficients, spatial emission profiles, ionization structure, and physical conditions are presented for each galaxy. Chemical abundances have been derived either using a direct determination of the electron temperature or after detailed examination of the predictions of different abundance calibrations. The oxygen abundances derived for the sample of Virgo dwarf galaxies span the range 7.6≤12+log(O/H)≤8.9, and the corresponding nitrogen-to-oxygen abundance ratio ranges from values typical of low-metallicity field BCD galaxies to near solar.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Abundances - Galaxies: Clusters: Individual: Name: Virgo - Galaxies: Dwarf - Galaxies: ISM - ISM: H II Regions

CDS comments: Standards sp1446+259 and sp0642+021 not identified.

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 Z 97-73 rG 11 42 56.45030 +19 57 58.3716 15.85 16.25   15.27   ~ 106 0
2 Z 97-79 GiC 11 43 13.096 +20 00 17.52 15.91 16.52   15.56   ~ 113 0
3 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
4 LEDA 38963 GiC 12 13 02.00032 +14 55 57.7367   16       ~ 26 0
5 IC 3063 GiG 12 15 06.819 +12 01 00.29   14.9       ~ 61 0
6 Z 41-77 GiP 12 15 18.322 +05 45 40.28   14.9       ~ 95 0
7 IC 3094 GiG 12 16 55.9955201904 +13 37 31.451161656   14.1       ~ 88 0
8 Z 42-8 H2G 12 19 09.840 +03 51 23.34   14.5       ~ 168 0
9 RMB 56 AG? 12 19 14.234 +13 52 56.65   15.5       ~ 65 0
10 LEDA 39845 GiC 12 20 40.2711363504 +13 53 22.758646344   17.5       ~ 56 0
11 IC 3224 AG? 12 22 36.0781372728 +12 09 27.638744616   16       ~ 63 0
12 NGC 4344 bCG 12 23 37.4496602016 +17 32 27.247188120   13.34       ~ 120 1
13 LEDA 40521 bCG 12 25 29.053 +13 29 53.26   18       ~ 38 0
14 RMB 46 bCG 12 25 47.542 +14 57 07.23   16.02       ~ 65 0
15 Z 42-97 GiG 12 25 52.500 +05 48 36.32   15.2       ~ 86 0
16 IC 3412 GiG 12 29 22.647 +09 59 20.49   15.4       ~ 67 0
17 Z 42-135 LSB 12 30 00.350 +07 55 47.44   15.4       ~ 140 0
18 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
19 RMB 132 bCG 12 30 48.6089418912 +12 02 42.805457196     16.78   16.44 ~ 102 0
20 IC 3453 H2G 12 31 37.742 +14 51 35.23   15.2       ~ 97 0
21 Z 70-155 H2G 12 32 33.5217697464 +09 10 24.875570172   15.4       ~ 85 0
22 IC 3475 LSB 12 32 40.985 +12 46 13.94   15.4 13.29   12.37 ~ 114 0
23 IC 3483 GiC 12 33 10.06 +11 20 50.4           ~ 77 1
24 IC 3591 bCG 12 37 02.697 +06 55 33.26   14.6       ~ 137 1
25 Z 70-196 GiG 12 37 41.52083 +08 33 30.9308   15.1       ~ 126 0
26 NGC 4641 GiG 12 43 07.657 +12 03 03.99   14.9       ~ 93 0
27 Z 71-33 GiG 12 46 04.442 +08 28 35.11   15.2       ~ 66 0
28 LEDA 43072 LSB 12 46 15.297 +10 12 20.14   16       ~ 80 0

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