Heavy‐Element Abundances in Blue Compact Galaxies
نویسندگان
چکیده
منابع مشابه
Heavy Element Abundances in Blue Compact Galaxies
We present high-quality ground-based spectroscopic observations of 54 supergiant H II regions in 50 low-metallicity blue compact galaxies with oxygen abundances 12 + log O/H between 7.1 and 8.3. We use the data to determine abundances for the elements N, O, Ne, S, Ar and Fe. We also analyze Hubble Space Telescope (HST) Faint Object Spectrograph archival spectra of 10 supergiant H II regions to ...
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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: The Astrophysical Journal
سال: 1999
ISSN: 0004-637X,1538-4357
DOI: 10.1086/306708