The photometric structure of young blue compact dwarf (BCD) candidates

Details The photometric structure of young blue compact dwarf (BCD) candidates The photometric structure of young blue compact dwarf (BCD) candidates

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005assl..329p..58p&link_type=abstract

Starbursts: From 30 Doradus to Lyman Break Galaxies, Held in Cambridge, UK, 6-10 September 2004. Edited by R. de Grijs and R.M.

Astronomy and Astrophysics

Astrophysics

Scientific paper

A tiny fraction of blue compact dwarf (BCD) galaxies exhibits a nearly galaxy-wide starburst activity and no signatures of an old underlying 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 ˜ 1 Gyr and hence qualify as nearby young-galaxy candidates. Elaborated multi-wavelength investigations of such systems may therefore provide crucial insights into the formation and starburst-driven evolution of low-mass galaxies in the early Universe. We discuss the photometric structure of these rare systems and emphasize the crucial importance of a correction for extended nebular emission when studying their evolutionary state.

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