2001A&A...372...22D


Query : 2001A&A...372...22D

2001A&A...372...22D - Astronomy and Astrophysics, volume 372, 22-28 (2001/6-2)

Red supergiant stars in blue compact dwarf galaxies: The case of Tol 0610-387.

DOUBLIER V., MAS-HESSE J.M., CAULET A. and KUNTH D.

Abstract (from CDS):

We have investigated the stellar content of the blue compact dwarf galaxies (BCDG) Tol 0610-387 by combining near infrared and optical images, complemented by spectroscopic data. The color maps, combined with the Hα image allowed us to identify clusters possibly dominated by red supergiant stars (RSG) associated with the current ongoing starburst episode. The analysis shows that the local colors and Hα emission, when compared with the predictions from population synthesis models, are consistent with an aging stellar population of around 10-15Myrs dominated by red supergiant stars. This galaxy could therefore become a preferred target for the spectroscopic confirmation and analysis of its RSG population. Since the presence of such stars in BCDGs is seldom observed, we discuss the implications of RSG detection for the study of the starburst dynamics and evolution.

Abstract Copyright:

Journal keyword(s): galaxies: photometry - galaxies: stellar content - galaxies: compacts - galaxies: dwarfs - galaxies: evolution - galaxies: fundamental parameters

Simbad objects: 8

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Number of rows : 8
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 Mrk 996 Sy1 01 27 35.5248944352 -06 19 35.432857848 14.75 15.05 14.48 14.06 13.70 ~ 112 0
2 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2019 2
3 LEDA 75555 AG? 06 12 14.192 -38 46 23.34   16.44 16.02 15.43   ~ 18 0
4 ESO 495-21 bCG 08 36 15.190 -26 24 33.66 12.04 11.93 11.45 11.09 12.3 ~ 571 3
5 Mrk 116 PaG 09 34 02.1 +55 14 25           ~ 1106 1
6 NGC 3125 EmG 10 06 33.318 -29 56 07.32 13.03 13.45 13.00 12.50 13.4 ~ 237 1
7 Mrk 33 AG? 10 32 31.956 +54 24 03.53 13.29 13.66 13.13 12.71 12.27 ~ 368 1
8 ESO 513-11 PaG 15 00 27.10 -26 26 57.0   15.85       ~ 53 0

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