Methanol masers in HII regions Virtual Observatory Resource

Authors
  1. Farmer H.
  2. Published by
    CDS
Abstract

As the recent publication by Breen et al. (2013MNRAS.435..524B) found, Class II methanol masers are exclusively associated with high mass star forming regions. Based on the positions of the Class I and II methanol and H_2_O masers, UC HII regions and 4.5um infrared sources, and the center velocities (vLSR) of the Class I methanol and H_2_O masers, compared to the vLSR of the Class II methanol masers, we propose three disk-outflow models that may be traced by methanol masers. In all three models, we have located the Class II methanol maser near the protostar, and the Class I methanol maser in the outflow, as is known from observations during the last twenty years. In our first model, the H_2_O masers trace the linear extent of the outflow. In our second model, the H_2_O masers are located in a circumstellar disk. In our third model, the H_2_O masers are located in one or more outflows near the terminating shock where the outflow impacts the ambient interstellar medium. Together, these models reiterate the utility of coordinated high angular resolution observations of high mass star forming regions in maser lines and associated star formation tracers.

Keywords
  1. h-ii-regions
  2. astrophysical-masers
  3. radio-astronomy
Bibliographic source Bibcode
2014IJAA....4..571F
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/IJAA/4.571
IVOA Identifier IVOID
ivo://CDS.VizieR/J/other/IJAA/4.571

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History

2014-12-23T08:38:12Z
Resource record created
2014-12-23T08:38:12Z
Created
2015-05-22T14:02:28Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr