Walsh, AJ, Beuther, H, Bihr, S et al. (14 more authors) (2016) A Survey for Hydroxyl in the THOR Pilot Region around W43. Monthly Notices of the Royal Astronomical Society, 455 (4). pp. 3494-3510. ISSN 0035-8711
Abstract
We report on observations of the hydroxyl radical (OH) within The HI, OH Recombination line survey (THOR) pilot region. The region is bounded approximately between Galactic coordinates l=29.2 to 31.5◦ and b=-1.0 to +1.0◦ and includes the high-mass star forming region W43. We identify 103 maser sites, including 72 with 1612MHz masers, 42 showing masers in either of the main line transitions at 1665 and 1667MHz and four showing 1720MHz masers. Most maser sites with either mainline or 1720MHz emission are associated with star formation, whereas most of the 1612MHz masers are associated with evolved stars. We find that nearly all of the main-line maser sites are co-spatial with an infrared source, detected by GLIMPSE. We also find diffuse OH emission, as well as OH in absorption towards selected unresolved or partially resolved sites. Extended OH absorption is found towards the well known star forming complex W43 Main.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Keywords: | masers – stars: formation – ISM: molecules |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Astrophysics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 03 Nov 2015 16:20 |
Last Modified: | 29 Apr 2016 15:56 |
Published Version: | http://dx.doi.org/10.1093/mnras/stv2446 |
Status: | Published |
Publisher: | Oxford University Press |
Identification Number: | 10.1093/mnras/stv2446 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:91175 |