Properties of the most metal-poor gas-rich LSB dwarf galaxies SDSS J0015+0104 and J2354−0005 residing in the Eridanus void
نویسندگان
چکیده
منابع مشابه
The Most Metal-Poor Galaxies
Metallicity is a key parameter that controls many aspects in the formation and evolution of stars and galaxies. In this review we focus on the metal deficient galaxies, in particular the most metal-poor ones, because they play a crucial rôle in the cosmic scenery. We first set the stage by discussing the difficult problem of defining a global metallicity and how this quantity can be measured fo...
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The optical and H I properties for a sample of low surface brightness (LSB) dwarf galaxies, cataloged from the Second Palomar Sky Survey, is presented. Gas mass fractions for LSB dwarfs reach the highest levels of any know galaxy type (fg =95%) confirming that their low stellar densities are due to inefficient conversion of gas mass into stellar mass. Comparison with star formation models indic...
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We have identified a sample of 41 low-mass high–oxygen abundance outliers from the mass–metallicity relation of star-forming galaxies measured by Tremonti et al. (2004). These galaxies, which have 8.6 < 12 + log(O/H) < 9.3 over a range of −14.4 > MB > −19.1 and 7.4 < log(M⋆/M⊙) < 10, are surprisingly non-pathological. They have typical specific star formation rates, they are fairly isolated and...
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15 صفحه اولWhere Are the Nearby Gas-rich Lsb Galaxies?
The Fisher-Tully " 10 Mpc Catalog of Late-Type Galaxies " (FT, 1981) is remarkably complete. Despite the considerable effort that has been spent searching for and cataloging low surface brightness (LSB) galaxies, almost no new HI-rich galaxies have been added to the volume to which the FT observations were both sensitive (d < 10(M HI /10 8.2 M ⊙) 5/12 Mpc) and intended to be complete (d < 10 Mp...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2013
ISSN: 1365-2966,0035-8711
DOI: 10.1093/mnras/stt609