Studying the molecular gas towards the R Coronae Australis dark cloud

PARON, S.; CELIS PEÑA, M.; ORTEGA, M. E.; CUNNINGHAM, M.; JONES, P. A.; RUBIO, M.

La Plata

Congreso; Reunión Anual de la Asociación Argentina de Astronomía; 2015

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 map of 12CO J=3-2 and HCO+ J=4-3, and a single spectrum of N2H+ 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, respectively. From the 12CO 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 N2H+ in the J=4-3 line towards the R CrA dark cloud.