IRAS 22198+6336: Discovery of an Intermediate-Mass Hot Core
Abstract
We present new SMA and PdBI observations of the intermediate-mass object IRAS 22198+6336 in the millimeter continuum and in several molecular line transitions. The millimeter continuum emission reveals a strong and compact source with a mass of around 5 Msun and with properties of Class 0 objects. CO emission shows an outflow with a quadrupolar morphology centered on the position of the dust condensation. The CO outflow emission seems to come from two distinct outflows, one of them associated with SiO outflow emission. A large set of molecular lines has been detected toward a compact dense core clearly coincident with the compact millimeter source, and showing a velocity gradient perpendicular to the outflow traced by CO and SiO. The chemically rich spectrum and the rotational temperatures derived from CHCN and CHOH (100-150 K) indicate that IRAS 22198+6336 is harbouring one the few intermediate-mass hot cores known at present.
Keywords
Cite
@article{arxiv.1007.5258,
title = {IRAS 22198+6336: Discovery of an Intermediate-Mass Hot Core},
author = {Alvaro Sanchez-Monge and Aina Palau and Robert Estalella and Stan Kurtz and Qizhou Zhang and James Di Francesco and Debra Shepherd},
journal= {arXiv preprint arXiv:1007.5258},
year = {2015}
}
Comments
Accepted for publication in The Astrophysical Journal Letters [5 pages, 4 figures, 1 table]