Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A candidate circumbinary Keplerian disk in G35.20-0.74 N: A study with
  ALMA   We report on ALMA observations of continuum and molecular line emission with
0.4" resolution towards the high-mass star forming region G35.20-0.74 N. Two
dense cores are detected in typical hot-core tracers, such as CH3CN, which
reveal velocity gradients. In one of these cores, the velocity field can be
fitted with an almost edge-on Keplerian disk rotating about a central mass of
18 Msun. This finding is consistent with the results of a recent study of the
CO first overtone bandhead emission at 2.3mum towards G35.20-0.74 N. The disk
radius and mass are >2500 au and 3 Msun. To reconcile the observed bolometric
luminosity (3x10^4 Lsun) with the estimated stellar mass of 18 Msun, we propose
that the latter is the total mass of a binary system.

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The categories of this paper are: cond-mat
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The categories of this paper are: cmp-lg
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The categories of this paper are: physics
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-alg
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
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The categories of this paper are: supr-con
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The categories of this paper are: quant-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas