A search for massive young stellar objects towards 98 CH$_{3}$OH maser sources
Abstract
Using the 13.7 m telescope of Purple Mountain Observatory (PMO), a survey of J=1-0 lines of CO and its isotopes was carried out towards 98 methanol maser sources in January 2008. Eighty-five sources have infrared counterparts within one arcmin. In the survey, except 43 sources showing complex or multiple-peak profiles, almost all the CO line profiles of the other 55 sources have large line widths of 4.5 km s on average and are usually asymmetric. Fifty corresponding Infrared Astronomical Satellite (IRAS) sources of these 55 sources are with larger than , which can be identified as possible high-mass young stellar sources. Statistics show that the CO line widths correlate with the bolometric luminosity of the associated IRAS sources. We also report the mapping results of two sources: IRAS 06117+1350 and IRAS 07299-1651 here. Two cores were found in IRAS 06117+1350 and one core was detected in IRAS 07299-1651. The northwest core in IRAS 06117+1350 and the core in IRAS 07299-1651 can be identified as precursors of UC\simH{\sc ii} regions or high-mass protostellar objects (HMPOs). The southeast core of IRAS 06117+1350 has no infrared counterpart, seeming to be on younger stages than pre-UC\simH{\sc ii} phase.
Keywords
Cite
@article{arxiv.1203.5389,
title = {A search for massive young stellar objects towards 98 CH$_{3}$OH maser sources},
author = {Tie Liu and Yue-Fang Wu and Ke Wang},
journal= {arXiv preprint arXiv:1203.5389},
year = {2015}
}
Comments
A search for massive young stellar objects. Accepted to RAA in 2010