Universität zu Köln

Leurini, S., Pillai, T., Stanke, T., Wyrowski, F., Testi, L., Schuller, F., Menten, K. M. and Thorwirth, S. (2011). The molecular distribution of the IRDC G351.77-0.51. Astron. Astrophys., 533. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

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Abstract

Context. Infrared dark clouds are massive, dense clouds seen in extinction against the IR Galactic background. Many of these objects appear to be on the verge of star and star cluster formation. Aims. Our aim is to understand the physical properties of IRDCs in very early evolutionary phases. We selected the filamentary IRDC G351.77-0.51, which is remarkably IR quiet at 8 mu m. Methods. As a first step, we observed mm dust continuum emission and rotational lines of moderate and dense gas tracers to characterise different condensations along the IRDC and study the velocity field of the filament. Results. Our initial study confirms coherent velocity distribution along the infrared dark cloud ruling out any coincidental projection effects. Excellent correlation between MIR extinction, mm continumm emission and gas distribution is found. Large-scale turbulence and line profiles throughout the filament is indicative of a shock in this cloud. Excellent correlation between line width and MIR brightness indicates turbulence driven by local star formation.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Leurini, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pillai, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stanke, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wyrowski, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Testi, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schuller, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Menten, K. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Thorwirth, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-490161
DOI:	10.1051/0004-6361/201016380
Journal or Publication Title:	Astron. Astrophys.
Volume:	533
Date:	2011
Publisher:	EDP SCIENCES S A
Place of Publication:	LES ULIS CEDEX A
ISSN:	1432-0746
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INFRARED-DARK CLOUDS; MASSIVE-STAR-FORMATION; HERBIG AE/BE STARS; H-II REGIONS; HII-REGIONS; PROTOSTELLAR CORES; INITIAL CONDITIONS; LINE OBSERVATIONS; FORMING REGIONS; IRAS 17233-3606 Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/49016