2006A&A...454..119P


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.17CEST19:37:57

2006A&A...454..119P - Astronomy and Astrophysics, volume 454, 119-123 (2006/7-4)

Oxygen abundance variations in the system of the two blue compact dwarf galaxies SBS 0335-052E and SBS 0335-052W.

PAPADEROS P., IZOTOV Y.I., GUSEVA N.G., THUAN T.X. and FRICKE K.J.

Abstract (from CDS):

We present 3.6m ESO telescope spectroscopic observations of the system of the two blue compact dwarf galaxies SBS 0335-052W and SBS 0335-052E. The oxygen abundance in SBS 0335-052W is 12+logO/H=7.13±0.08, confirming that this galaxy is the most metal-deficient emission-line galaxy known. We find that the oxygen abundance in SBS 0335-052E varies from region to region in the range from 7.20 to 7.31, suggesting the presence of an abundance gradient over a spatial scale of ≲1kpc. Signatures of early carbon-type Wolf-Rayet stars are detected in cluster #3 of SBS 0335-052E, corresponding to the emission of 20 to 130 WC4 stars, depending on the adopted luminosity of a single WC4 star in the C IV λ4658 emission line.

Abstract Copyright:

Journal keyword(s): galaxies: fundamental parameters - galaxies: starburst - galaxies: abundances

Simbad objects: 11

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Number of rows : 11

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 [PBT2001] SBSG 0335-052 W G 03 37 38.40 -05 02 37.5   19.14     18.85 ~ 99 1
2 [TIL97] 2 Cl* 03 37 44.0 -05 02 38           ~ 21 0
3 [TIL97] 3 Cl* 03 37 44.0 -05 02 38           ~ 14 0
4 [TIL97] 4 Cl* 03 37 44.0 -05 02 38           ~ 17 0
5 [TIL97] 5 Cl* 03 37 44.0 -05 02 38           ~ 17 0
6 [TIL97] 6 Cl* 03 37 44.0 -05 02 38           ~ 14 0
7 [TIL97] 7 Cl* 03 37 44.0 -05 02 38           ~ 9 0
8 [TIL97] 1 Cl* 03 37 44.0 -05 02 38           ~ 21 0
9 SBSG 0335-052 bCG 03 37 44.04 -05 02 38.5     16.65     ~ 443 1
10 SBSG 0335-052B G 03 37 44.04 -05 02 40.2   16.77 16.65   16.79 ~ 155 1
11 Mrk 116 PaG 09 34 02.1 +55 14 25           ~ 1025 1

    Equat.    Gal    SGal    Ecl

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2021.06.17-19:37:57

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