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17 - ST16 and N113 in the Large Magellanic Cloud

from Part VI - External Galaxies

Published online by Cambridge University Press:  11 April 2023

Duncan MacKay ,
Mark Thompson  and
James Urquhart
Duncan MacKay
Affiliation:
University of Kent, Canterbury
Mark Thompson
Affiliation:
University of Leeds
James Urquhart
Affiliation:
University of Kent, Canterbury
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Summary

Within the Large Magellanic Cloud, a hot core is observed associated with the embedded high-mass YSO (IRAS 05195˗6911), known as ST16. Comparative observations with molecular abundances typical of Galactic hot cores are discussed, as is the evidence for a rotating protostellar envelope and outflow cavity. A second LMC source, the prominent star-formation region N113, shows centrally focused star formation with associated point-like mid-infrared emission, masers, and compact HII regions superimposed on extended emission. Gas and dust appear compressed by a complex structure of ionized gas bubbles (prominent in Hα detections) engendered by massive stars in several young clusters. In both ST16 and N113 low-metallicity sources, warm dust appears to inhibit COMs formation and survival, while reaction routes appear broadly comparable with Galactic models.

Keywords

MagellanicLMCYSOST16hot coreN113low metallicityCOMsrotating envelopeprotostellar
Type
Chapter
Information
Case Studies in Star Formation
A Molecular Astronomy Perspective
 , pp. 267 - 280
Publisher: Cambridge University Press
Print publication year: 2023

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