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Star-formation masers in the Magellanic Clouds: A multibeam survey with new detections and maser abundance estimates

conference contribution
posted on 2023-05-23, 16:58 authored by Green, JA, Caswell, JL, Fuller, GA, Avison, A, Breen, SL, Brooks, K, Burton, MG, Chrysostomou, A, Cox, J, Diamond, PJ, Simon Ellingsen, Gray, MD, Hoare, MG, Masheder, MRW, McClure-Griffiths, N, Pestalozzi, M, Phillips, C, Quinn, L, Thompson, MA, Voronkov, MA, Walsh, A, Ward-Thompson, D, Wong-McSweeney, D, Yates, JA, Cohen, RJ
The results of the first complete survey for 6668-MHz CH3 OH and 6035-MHz excited-state OH masers in the Small and Large Magellanic Clouds are presented. A new 6668-MHz CH3 OH maser in the Large Magellanic Cloud has been detected towards the star-forming region N 160a, together with a new 6035-MHz excited-state OH maser detected towards N 157a. We also re-observed the previously known 6668-MHz CH3 OH masers and the single known 6035MHz OH maser. Neither maser transition was detected above ∼ 0.13 Jy in the Small Magellanic Cloud. All observations were initially made using the CH 3 OH Multibeam (MMB) survey receiver on the 64-m Parkes radio telescope as part of the overall MMB project. Accurate positions were measured with the Australia Telescope Compact Array (ATCA). In a comparison of the star formation maser populations in the Magellanic Clouds and our Galaxy, the LMC maser populations are demonstrated to be smaller than their Milky Way counterparts. CH3OH masers are under-abundant by a factor of ∼50, whilst OH and H2 O masers are a factor of ∼ 10 less abundant than our Galaxy. © 2009 International Astronomical Union.

History

Publication title

The Magellanic System: Stars, Gas and Galaxies Proceedings IAU Symposium No. 256

Volume

256

Editors

JT van Loon and JM Oliveira

Pagination

227-232

ISBN

978-0-521-88987-2

Department/School

School of Natural Sciences

Publisher

Cambridge University Press

Place of publication

UK

Event title

The Magellanic System: Stars, Gas and Galaxies

Event Venue

Keele University, Staffordshire

Date of Event (Start Date)

2008-07-28

Date of Event (End Date)

2008-08-01

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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