NIR census of the stellar content of nearby blue compact dwarf galaxies with HST

Authors
Hopp, U Schulte-Ladbeck, RE Greggio, L Drozdovsky, I Crone, MM
Citation
U. Hopp et al., NIR census of the stellar content of nearby blue compact dwarf galaxies with HST, ASTRO SP SC, 277, 2001, pp. 267-270
Citations number
17
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICS AND SPACE SCIENCE
ISSN journal
0004640X → ACNP
Volume
277
Year of publication
2001
Supplement
1
Pages
267 - 270
Database
ISI
SICI code
0004-640X(2001)277:<267:NCOTSC>2.0.ZU;2-T
Abstract
We resolved the brightest stars in 5 nearby blue compact dwarf galaxies wit h NICMOS aboard HST in J and H. In all galaxies, RGB stars were detected. T his finding allows an improved estimate of the distances of these galaxies and sets a lower limit to the age of the old stellar component of 1 Gyr. Fu rther, we detected a pronounced AGB population, including - in all but one - also TP-AGB stars. Our data do not support the hypothesis that very low m etallicity BCD galaxies may have formed their first stars only recently.