Universität zu Köln

Urquhart, J. S., Figura, C., Cross, J. R., Wells, M. R. A., Moore, T. J. T., Eden, D. J., Ragan, S. E., Pettitt, A. R., Duarte-Cabral, A., Colombo, D., Schuller, E., Csengeri, T., Mattern, M., Beuther, H., Menten, K. M., Wyrowski, F., Anderson, L. D., Barnes, P. J., Beltran, M. T., Billington, S. J., Bronfman, L., Giannetti, A., Kainulainen, J., Kauffmann, J., Lee, M-Y, Leurini, S., Medina, S-N X., Montenegro-Montes, F. M., Riener, M., Rigby, A. J., Sanchez-Monge, A., Schilke, P., Schisano, E., Traficante, A. and Wieneri, M. (2021). SEDIGISM-ATLASGAL: dense gas fraction and star formation efficiency across the Galactic disc. Mon. Not. Roy. Astron. Soc., 500 (3). S. 3050 - 3064. OXFORD: OXFORD UNIV PRESS. ISSN 1365-2966

Full text not available from this repository.

Abstract

By combining two surveys covering a large fraction of the molecular material in the Galactic disc, we investigate the role spiral arms play in the star formation process. We have matched clumps identified by APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) with their parental giant molecular clouds (GMCs) as identified by SEDIGISM, and use these GMC masses, the bolometric luminosities, and integrated clump masses obtained in a concurrent paper to estimate the dense gas fractions (DGF(gmc) = Sigma M-clump/M-gmc) and the instantaneous star formation efficiencies (i.e. SFEgmc = Sigma L-clump/M-gmc). We find that the molecular material associated with ATLASGAL clumps is concentrated in the spiral arms (similar to 60 per cent found within +/- 10 km s(-1) of an arm). We have searched for variations in the values of these physical parameters with respect to their proximity to the spiral arms, but find no evidence for any enhancement that might be attributable to the spiral arms. The combined results from a number of similar studies based on different surveys indicate that, while spiral-arm location plays a role in cloud formation and HI to H-2 conversion, the subsequent star formation processes appear to depend more on local environment effects. This leads us to conclude that the enhanced star formation activity seen towards the spiral arms is the result of source crowding rather than the consequence of any physical process.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Urquhart, J. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Figura, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cross, J. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wells, M. R. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Moore, T. J. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Eden, D. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ragan, S. E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pettitt, A. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Duarte-Cabral, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Colombo, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schuller, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Csengeri, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mattern, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Beuther, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Menten, K. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wyrowski, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Anderson, L. D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Barnes, P. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Beltran, M. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Billington, S. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bronfman, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Giannetti, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kainulainen, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kauffmann, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lee, M-Y UNSPECIFIED UNSPECIFIED UNSPECIFIED Leurini, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Medina, S-N X. UNSPECIFIED UNSPECIFIED UNSPECIFIED Montenegro-Montes, F. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Riener, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rigby, A. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sanchez-Monge, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schilke, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schisano, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Traficante, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wieneri, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-605863
DOI:	10.1093/mnras/staa2512
Journal or Publication Title:	Mon. Not. Roy. Astron. Soc.
Volume:	500
Number:	3
Page Range:	S. 3050 - 3064
Date:	2021
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1365-2966
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CANDIDATE MASSIVE YSOS; MOLECULAR CLOUDS; MILKY-WAY; SPIRAL ARMS; (CO)-C-13 OBSERVATIONS; PHYSICAL-PROPERTIES; FORMATION RATES; RMS SURVEY; CATALOG; INNER Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/60586