Universität zu Köln

Russeil, D., Tige, J., Adami, C., Anderson, L. D., Schneider, N., Zavagno, A., Samal, M. R., Amram, P., Guennou, L., Le Coarer, E., Walsh, A., Longmore, S. N. and Purcell, C. (2016). NGC 6334 and NGC 6357: H alpha kinematics and the nature of the H II regions. Astron. Astrophys., 587. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

Full text not available from this repository.

Abstract

Aims. NGC 6334 and NGC 6357 are amongst the most active, optically visible Galactic star-forming complexes. They are composed of several El 11 regions that have a significant impact on their surrounding. The aim of this paper is to present a kinematic study of the optical H II regions that belong to NGC 6334 and NGC 6357. Methods. We use Fabry-Perot interferometer observations of the H alpha line, which cover NGC 6334 and NGC 6357. These observations allow us to analyse the H alpha line profiles to probe the kinematics of the ionised gas of both regions. We complement the H alpha observations with multi-wavelength data to specify the nature of the H II regions. Results. We determine the dynamical nature of the optical H II regions that belongs to NGC 6334 and NGC 6357. In NGC 6334, GUM 61 is an expanding wind shell-like H II region, GUM 64b exhibits a champagne flow, GM1-24 is the H alpha counterpart of two larger regions and H II 351.2+0.5 is, in fact, composed of two H II regions. In NGC 6357, H II 353.08+0.28 and H II 353.09+0.63 are probably stellar wind-shaped bubble 11 II regions, while H II 353.42+0.45 is a classical photo-ionised 11 II region. We suggest that, at large scale, star-formation seems to be triggered where large/old 1111 regions intersect. Inversely, stellar formation seems to have already started in the NGC 6334 north-east filament, irrespective of any evident external H II region impact. While NGC 6357 shows more complicated kinematics, NGC 6334 is characterised by a more active stellar formation.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Russeil, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tige, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Adami, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Anderson, L. D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schneider, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zavagno, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Samal, M. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Amram, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Guennou, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Le Coarer, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Walsh, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Longmore, S. N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Purcell, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-283590
DOI:	10.1051/0004-6361/201424484
Journal or Publication Title:	Astron. Astrophys.
Volume:	587
Date:	2016
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 STAR-FORMING REGION; GALACTIC PLANE SURVEY; RADIO-CONTINUUM OBSERVATIONS; HIGH ANGULAR RESOLUTION; HII-REGIONS; MILKY-WAY; MASSIVE STARS; CO SURVEY; DYNAMICAL EVOLUTION; PILLAR FORMATION Multiple languages Astronomy & Astrophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/28359