Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A search for water masers associated with class II methanol masers - II.
  Longitude range 341$^{\circ}$ to 6$^{\circ}$   This is the second paper in a series of catalogues of 22-GHz water maser
observations towards the 6.7-GHz methanol masers from the Methanol Multibeam
(MMB) Survey. In this paper we present our water maser observations made with
the Australia Telescope Compact Array towards the masers from the MMB survey
between l = 341$^{\circ}$ through the Galactic centre to l = 6$^{\circ}$. Of
the 204 6.7-GHz methanol masers in this longitude range we found 101 to have
associated water maser emission (~ 50 per cent). We found no difference in the
6.7-GHz methanol maser luminosities of those with and without water masers. In
sources where both maser species are observed, the luminosities of the methanol
and water masers are weakly correlated. Studying the mid-infrared colours from
GLIMPSE we found no differences between the colours of those sources associated
with both methanol and water masers and those associated with just methanol.
Comparing the column density and dust mass calculated from the 870-micron
thermal dust emission observed by ATLASGAL, we found no differences between
those sources associated with both water and methanol masers and those with
methanol only. Since water masers are collisionally pumped and often show
emission further away from their accompanying YSO than the radiatively pumped
6.7-GHz methanol masers, it is likely water masers are not as tightly
correlated to the evolution of the parent YSO and so do not trace such a well
defined evolutionary state as 6.7-GHz methanol masers.

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The categories of this paper are: stat
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga