Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nebular metallicities in two isolated Local Void dwarf galaxies   Isolated dwarf galaxies, especially those situated in voids, may provide
insight into primordial conditions in the Universe and the physical processes
that govern star formation in undisturbed stellar systems. The metallicity of H
ii regions in such galaxies is key to investigating this possibility. From the
SIGRID sample of isolated dwarf galaxies, we have identified two exceptionally
isolated objects, the Local Void galaxy [KK98]246 (ESO 461-G036) and another
somewhat larger dwarf irregular on the edge of the Local Void, MCG-01-41-006
(HIPASS J1609- 04). We report our measurements of the nebular metallicities in
these objects. The first object has a single low luminosity Hii region, while
the second is in a more vigorous star forming phase with several bright H ii
regions. We find that the metallicities in both galaxies are typical for
galaxies of this size, and do not indicate the presence of any primordial gas,
despite (for [KK98]246) the known surrounding large reservoir of neutral
Hydrogen.

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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin