Multiple monopolar outflows driven by massive protostars in IRAS 18162-2048
Abstract
In this paper we present Combined Array for Research in Millimeter-wave Astronomy (CARMA) 3.5 mm observations and SubMillimeter Array (SMA) 870 microns observations toward the high-mass star-forming region IRAS 1816-2048, the core of the HH 80/81/80N system. Molecular emission from HCN, HCO+ and SiO is tracing two molecular outflows (the so-called Northeast and Northwest outflows). These outflows have their origin in a region close to the position of MM2, a millimeter source known to harbor a couple protostars. We estimate for the first time the physical characteristics of these molecular outflows, which are similar to those of 1000-5000 Lo protostars, suggesting that MM2 harbors high-mass protostars. High-angular resolution CO observations show an additional outflow due southeast. We identify for the first time its driving source, MM2(E), and see evidence of precession. All three outflows have a monopolar appearance, but we link the NW and SE lobes, explaining their asymmetric shape as a consequence of possible deflection.
Keywords
Cite
@article{arxiv.1310.1011,
title = {Multiple monopolar outflows driven by massive protostars in IRAS 18162-2048},
author = {Manuel Fernández-López and Josep M. Girart and Salvador Curiel and Luis Alberto Zapata and Jose Pablo Fonfría and Keping Qiu},
journal= {arXiv preprint arXiv:1310.1011},
year = {2015}
}
Comments
Accepted in the ApJ, 11 pages,8 figures