The molecular core and the powering source of the bipolar molecular outflow in NGC 2264G

DOI: 
Publication date: 
01/01/1994
Main author: 
Gómez J.F.
IAA authors: 
Gómez J.F.;Torrelles J.M.
Authors: 
Gómez J.F., Curiel S., Torrelles J.M., Rodríguez L.F., Anglada G., Girart J.M.
Journal: 
Astrophysical Journal
Publication type: 
Article
Volume: 
436
Pages: 
749-753
Number: 
Abstract: 
We present NH3(1, 1) and (2, 2) and radio observations toward the bipolar molecular outflow NGC 2264G. We detected a high-density NH3 core of 0.08 x 0.06 pc in size, M ≃ 6[XNH3/10-8]-1 M⊙, and TK ≃ 15 K, located almost midway between the blueshifted and redshifted CO lobes of the outflow. Neither the infrared sources detected so far (with the exception of IRAS 06384+0958) nor VLA 1, the radio continuum source previously detected in the area (and suggested as the powering source of the outflow), appears to be associated with the high-density molecular clump. However, we detected a new radio continuum source VLA 2, close to the maximum of NH3 emission. This continuum source shows a jetlike morphology elongated in the direction of the bipolar molecular outflow. We propose that VLA 2 is a deeply embedded low-mass star and the most likely powering source of the bipolar outflow in NGC 2264G We find that the mechanical luminosity of the wind from VLA 2 is of the same order as the mechanical luminosity of the outflow, and as the estimated stellar luminosity of the source. Thus, this remarkable source appears to provide a very efficient outflow acceleration mechanism.
Database: 
SCOPUS
Keywords: 
ISM: individual (NGC 2264G); ISM: jets and outflows; ISM: molecules; Stars: pre-main-sequence