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150743 - A sensitive search for water masers associated with star formation regions in the Local Group Galaxy NGC 6822.pdf (913.16 kB)

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

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posted on 2023-05-21, 08:57 authored by Conor FlanaganConor Flanagan, Simon EllingsenSimon Ellingsen, Andrew ColeAndrew Cole
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.

History

Publication title

Publications of the Astronomical Society of Australia

Volume

39

Article number

e022

Number

e022

Pagination

1-6

ISSN

1323-3580

Department/School

School of Natural Sciences

Publisher

Cambridge University Press

Place of publication

United Kingdom

Rights statement

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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  • Open

Socio-economic Objectives

Expanding knowledge in the physical sciences

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