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Star formation in Galactic spiral arms and the interarm regions

Eden, DJ, Moore, TJT, Morgan, LK, Thompson, MA and Urquhart, JS (2013) Star formation in Galactic spiral arms and the interarm regions. Monthly Notices of the Royal Astronomical Society, 431 (2). pp. 1587-1595. ISSN 0035-8711

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Abstract

The line of sight through the Galactic plane between longitudes l = 37°83 and 42°50 allows for the separation of Galactic Ring Survey molecular clouds into those that fall within the spiral arms and those located in the interarm regions. By matching these clouds in both position and velocity with dense clumps detected in the mm continuum by the Bolocam Galactic Plane Survey, we are able to look for changes in the clump formation efficiency (CFE), the ratio of clump to cloud mass, with Galactic environment. We find no evidence of any difference in the CFE between the interarm and spiral-arm regions along this line of sight. This is further evidence that, outside the Galactic Centre region, the large-scale structures of the Galaxy play little part in changing the dense, potentially star-forming structures within molecular clouds. © 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.

Item Type: Article
Additional Information: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Uncontrolled Keywords: 0201 Astronomical And Space Sciences
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: Oxford University Press
Related URLs:
Date Deposited: 08 Mar 2018 11:59
Last Modified: 08 Mar 2018 11:59
DOI or Identification number: 10.1093/mnras/stt279
URI: http://researchonline.ljmu.ac.uk/id/eprint/8230

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