A Global View on Star Formation: The GLOSTAR Galactic PlaneSurvey: V: 6.7 GHz Methanol Maser Catalogue

Nguyen, H, Rugel, M.R, Murugeshan, C., Menten, K.M., Brunthaler, A., Urquhart, J.S., Dokara, R., Dzib, S.A., Gong, Y., Khan, S., and others. (2022) A Global View on Star Formation: The GLOSTAR Galactic PlaneSurvey: V: 6.7 GHz Methanol Maser Catalogue. Astronomy & Astrophysics, 666 . Article Number A59. ISSN 0004-6361. (doi:10.1051/0004-6361/202244115) (KAR id:95918)

PDF Author's Accepted Manuscript Language: English This work is licensed under a Creative Commons Attribution 4.0 International License.
Download this file (PDF/9MB)	Preview
Request a format suitable for use with assistive technology e.g. a screenreader
Official URL: https://doi.org/10.1051/0004-6361/202244115

Abstract

Class II methanol (CH3OH) masers are amongst the clearest signposts of recent high-mass star formation (HMSF). A complete catalogue outlines the distribution of star formation in the Galaxy, the number of young star-forming cores, and the physical conditions of their environment. The Global View on Star Formation (GLOSTAR) survey, which is a blind survey in the radio regime of 4–8 GHz, maps the Galactic mid-plane in the radio continuum, 6.7 GHz methanol line, the 4.8 GHz formaldehyde line, and several radio recombination lines. We present the analysis of the observations of the 6.7 GHz CH3OH maser transition using data from the D-configuration of the Very Large Array (VLA). We analyse the data covering Galactic longitudes from −2 ◦ < l < 60◦ and Galactic latitudes of |b| < 1 ◦ . We detect a total of 554 methanol masers, out of which 84 are new, and catalogue their positions, velocity components, and integrated fluxes. With a typical noise level of ∼18 mJy beam−1 , this is the most sensitive unbiased methanol survey for methanol masers to date. We search for dust continuum and radio continuum associations, and find that 97% of the sources are associated with dust, and 12% are associated with radio continuum emission.

Item Type:	Article
DOI/Identification number:	10.1051/0004-6361/202244115
Uncontrolled keywords:	masers – surveys – ISM: molecules – radio continuum: ISM – radio lines: ISM – stars: formation – techniques: interferometric
Subjects:	Q Science > QB Astronomy
Divisions:	Divisions > Division of Natural Sciences > Physics and Astronomy
Funders:	University of Kent (https://ror.org/00xkeyj56)
Depositing User:	James Urquhart
Date Deposited:	26 Jul 2022 10:50 UTC
Last Modified:	19 Sep 2023 14:07 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/95918 (The current URI for this page, for reference purposes)

University of Kent Author Information

Urquhart, J.S..

Creator's ORCID:	https://orcid.org/0000-0002-1605-8050
CReDIT Contributor Roles:

Depositors only (login required):

Altmetric

Download Statistics

Total unique views for this document in KAR since July 2020. For more details click on the image.