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3D
of BCDs
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Blue compact dwarf galaxies are low luminosity, compact objects,
showing optical spectra similar to those presentes by HII regions.
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They are metal deficient galaxies with the metallicities
of their ionised gas ranging from Z/50 to Z/2.
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BCDs are gas rich dwarf in which recurrent starburst semm
to occur over an older stellar population.
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In recent years, BCDs have attracted a great deal of interest,
as they have been shown to be key objects for solving several astrophysical
problems:
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Characterization of the ongoing star-forming process allows
us to study the mechanism that trigger and regulate the star-formation
activity in low mass and metal-poor systems.
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The charcterisation of a possible underlying component is
fundamental for understanding how BCDs formed and evolved.
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The comparison of theirs properties (structural parameters,
mean colours and colour gradient) with those characterising other dwarfs
(dE, dI, LBS) is crutial for deriving a coherent picture for dwarf galaies
in general.
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