Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Studying the molecular gas towards the R Coronae Australis dark cloud   The R Coronae Australis dark cloud is one of the closest star-forming regions
to the Sun. The cloud is known to be very active in star formation, harboring
many Herbig-Haro objects (HHs) and Molecular Hydrogen emission-line Objects
(MHOs). In this work we present results from molecular observations (a
$5.5^{'}\times5.5^{'}$ map of $^{12}$CO J$=3-2$ and HCO$^{+}$ J$=4-3$, and a
single spectrum of N$_{2}$H$^{+}$ J$=4-3$) obtained with the Atacama
Submillimeter Telescope Experiment (ASTE) towards the R CrA dark cloud with an
angular and spectral resolution of 22$^{"}$ and 0.11 km s$^{-1}$, respectively.
From the $^{12}$CO J$=3-2$ line we found kinematical spectral features strongly
suggesting the presence of outflows towards a region populated by several HHs
and MHOs. Moreover, most of these objects lie within an HCO$^{+}$ maximum,
suggesting that its emission arises from an increasement of its abundance due
to the chemistry triggered by the outflow activity. Additionally, we are
presenting the first reported detection of N$_{2}$H$^{+}$ in the J$=4-3$ line
towards the R CrA dark cloud.

17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat