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Detection of HC3N maser emission in NGC 253


Ellingsen, SP and Chen, X and Breen, SL and Qiao, H-h, Detection of HC3N maser emission in NGC 253, Astrophysical Journal Letters, 841, (1) Article L14. ISSN 2041-8205 (2017) [Refereed Article]


Copyright Statement

Copyright 2017 The American Astronomical Society

DOI: doi:10.3847/2041-8213/aa71a6


We report the detection of maser emission from the $J=4\mbox{--}3$ transition of ${{\rm{HC}}}_{3}{\rm{N}}$ at 36.4 GHz toward the nearby starburst galaxy NGC 253. This is the first detection of maser emission from this transition in either a Galactic or extragalactic source. The ${{\rm{HC}}}_{3}{\rm{N}}$ maser emission has a brightness temperature in excess of 2500 K and is offset from the center of the galaxy by approximately 18'' (300 pc), but close to a previously reported class I methanol maser. Both the ${{\rm{HC}}}_{3}{\rm{N}}$ and methanol masers appear to arise near the interface between the galactic bar and the central molecular zone, where it is thought that molecular gas is being transported inwards, producing a region of extensive low-velocity shocks.

Item Details

Item Type:Refereed Article
Keywords:galaxies: individual (NGC 253), galaxies: starburst, masers, radio lines: ISM
Research Division:Physical Sciences
Research Group:Astronomical and Space Sciences
Research Field:Cosmology and Extragalactic Astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
Author:Ellingsen, SP (Professor Simon Ellingsen)
ID Code:116819
Year Published:2017
Web of Science® Times Cited:2
Deposited By:Mathematics and Physics
Deposited On:2017-05-23
Last Modified:2017-12-06
Downloads:16 View Download Statistics

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