Ionized gas in dwarf galaxies: Abundance indicators
نویسندگان
چکیده
منابع مشابه
Dust-to-gas Ratio and Metal Abundance in Dwarf Galaxies
We have compared the metallicity (represented by oxygen abundance), Xo, and the dust-to-gas ratio, D, in a sample of dwarf galaxies. For dwarf irregulars (dIrrs) we find a good correlation between the two quantities, with a power-law index 0.52± 0.25. Blue Compact Dwarf (BCD) galaxies do not show such a good correlation; in addition both the dust-to-gas ratio and the metallicity tend to be high...
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Blue compact dwarf galaxies (BCDGs) are currently undergoing strong bursts of star formation. Nevertheless, only a few of them have been clearly detected in CO, which is thought to trace the ”fuel” of star formation: H2. In this paper we present a deep search for CO J = 1 → 0 and J = 2 → 1 emission lines in a sample of 8 BCDGs and two companions. Only 2 of them (Haro 2 and UM465) are detected. ...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2008
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921308025106