English

Studying the molecular gas towards the R Coronae Australis dark cloud

Astrophysics of Galaxies 2016-03-16 v1

Abstract

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 5.5×5.55.5^{'}\times5.5^{'} map of 12^{12}CO J=32=3-2 and HCO+^{+} J=43=4-3, and a single spectrum of N2_{2}H+^{+} J=43=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 s1^{-1}, respectively. From the 12^{12}CO J=32=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 N2_{2}H+^{+} in the J=43=4-3 line towards the R CrA dark cloud.

Keywords

Cite

@article{arxiv.1603.04760,
  title  = {Studying the molecular gas towards the R Coronae Australis dark cloud},
  author = {S. Paron and M. Celis Peña and M. E. Ortega and M. Cunningham and P. A. Jones and M. Rubio},
  journal= {arXiv preprint arXiv:1603.04760},
  year   = {2016}
}

Comments

accepted for publication in Bolet\'in de la Asociaci\'on Argentina de Astronom\'ia (BAAA)