Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SBS 0335-052W - a new, extremely low metallicity dwarf galaxy   We present Multiple Mirror Telescope (MMT) spectrophotometry and 3.5m Calar
Alto telescope R, I photometry of the western component of the extremely
low-metallicity blue compact galaxy SBS 0335-052. We argue that both
components, separated by 24 kpc, are members of an unique, physically connected
system. It is shown that SBS 0335-052W has the same redshift as SBS 0335-052
and has an extremely low oxygen abundance, 12 + log (O/H) = 7.45+-0.22,
comparable to those in I Zw 18 and SBS 0335--052. The (R-I) color profiles are
very blue in both galaxies due to the combined effect of ionized gas and a
young stellar population. We argue that SBS 0335--052W is likely to be a nearby
young dwarf galaxy with age not exceeding 10^8 yr. The implications of this
conclusion to the question of galaxy formation and to the properties of
primeval dwarf galaxies are discussed.

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The categories of this paper are: math
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The categories of this paper are: nucl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
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The categories of this paper are: eess
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: econ
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: hep-ex