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New HST/ACS Observations of Dwarf Star-Forming Galaxies with Extreme Properties of Cosmological Relevance

Published online by Cambridge University Press:  01 August 2006

F. Annibali ,
A. Aloisi ,
R. Van der Marel ,
J. Mack  and
M. Tosi
F. Annibali
Affiliation:
Space Telescope Science Institute, Baltimore, USA
A. Aloisi
Affiliation:
ESA, Baltimore, USA
R. Van der Marel
Affiliation:
Space Telescope Science Institute, Baltimore, USA
J. Mack
Affiliation:
Space Telescope Science Institute, Baltimore, USA
M. Tosi
Affiliation:
INAF-Osservatorio Astronomico di Bologna, Bologna, Italy
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Abstract

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We present deep Color Magnitude Diagrams (CMDs), based on HST/ACS data, of two star-forming dwarf galaxies, NGC4449 and IZw18.

Keywords

galaxies: evolutiongalaxies: stellar contentgalaxies: individual (NGC449, IZw18)