Abstract
We resolved the brightest stars in 5 nearby blue compact dwarf galaxies with NICMOS aboard HST in J and H. In all galaxies, RGB stars were detected. This 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. Further, 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 metallicity BCD galaxies may have formed their first stars only recently.
Based on observations made with the NASA/ESA Hubble Space Telescope obtained from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.
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Hopp, U., Schulte-Ladbeck, R.E., Greggio, L., Drozdovsky, I., Crone, M.M. (2001). NIR Census of the Stellar Content of Nearby Blue Compact Dwarf Galaxies with HST. In: Vílchez, J.M., Stasińska, G., Pérez, E. (eds) The Evolution of Galaxies. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-3313-7_59
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DOI: https://doi.org/10.1007/978-94-017-3313-7_59
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