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A sensitive search for water masers associated with star formation regions in the Local Group Galaxy NGC 6822

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Flanagan, CJP, Ellingsen, SP ORCID: 0000-0002-1363-5457 and Cole, AA ORCID: 0000-0003-0303-3855 2022 , 'A sensitive search for water masers associated with star formation regions in the Local Group Galaxy NGC 6822' , Publications of the Astronomical Society of Australia, vol. 39 , pp. 1-6 , doi: 10.1017/pasa.2022.8.

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Abstract

We report the results of a sensitive search for water maser emission in the Local Group Galaxy NGC 6822 with the Karl G. Jansky Very Large Array. The observations provide tentative single-epoch detections of four candidates, associated with two infrared-bright star formation regions (Hubble I/III and Hubble IV). The candidate maser detections are all offset from the velocity range where strong emission from Hi neutral gas is observed towards NGC 6822, with the closest offset by ∼40kms-1. Our observations include the location of NL1K, a previous tentative water maser detection in NGC 6822. We do not detect any emission from this location with a sensitivity limit approximately a factor of 5 better than the original Sardina Radio Telescope observations.

Item Type: Article
Authors/Creators:Flanagan, CJP and Ellingsen, SP and Cole, AA
Keywords: masers; stars: formation; galaxies: individual (NGC 6822)
Journal or Publication Title: Publications of the Astronomical Society of Australia
Publisher: Cambridge University Press
ISSN: 1323-3580
DOI / ID Number: 10.1017/pasa.2022.8
Copyright Information:

Copyright 2022 The Author(s). Published by Cambridge University Press on behalf of the Astronomical Society of Australia.Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/

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