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Photometric properties of young blue compact dwarf galaxy candidates

Published online by Cambridge University Press:  17 May 2006

P. Papaderos ,
Y. I. Izotov ,
N. G. Guseva ,
K. G. Noeske ,
T. X. Thuan  and
K. J. Fricke
P. Papaderos
Affiliation:
Institute for Astrophysics, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
Y. I. Izotov
Affiliation:
Main Astronomical Observatory, Zabolotnoho 27, Kyiv 03680, Ukraine
N. G. Guseva
Affiliation:
Main Astronomical Observatory, Zabolotnoho 27, Kyiv 03680, Ukraine
K. G. Noeske
Affiliation:
Lick Observatory, University of California, Santa Cruz, CA 95064, USA
T. X. Thuan
Affiliation:
Astronomy Department, University of Virginia, Charlottesville, VA 22903, USA
K. J. Fricke
Affiliation:
Institute for Astrophysics, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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A tiny fraction (<1%) of very metal-deficient (12+log(O/H)≤7.6) blue compact dwarf (BCD) galaxies exhibits a nearly galaxy-wide starburst activity and no signatures of an old stellar host galaxy. The evolutionary status and formation history of these most metal-deficient BCDs are still a subject of debate. Various lines of evidence suggest, however, that these systems do not contain a substantial population of stars older than $\sim$1 Gyr and hence qualify as nearby young-galaxy candidates. Elaborated multiwavelength studies of these rare, most metal-deficient BCDs may therefore provide crucial insights into the formation and starburst-driven evolution of low-mass galaxies in the early universe.

Keywords

Galaxies: formationevolutiondwarfstarburstabundancesstructure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S232: Scientific Requirements for Extremely Large Telescopes , November 2005 , pp. 229 - 230
Copyright
2006 International Astronomical Union