The velocity structure of the core of the giant H II region NGC 3603

Details The velocity structure of the core of the giant H II region NGC 3603 The velocity structure of the core of the giant H II region NGC 3603

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.219..895c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 219, April 15, 1986, p. 895-902.

Astronomy and Astrophysics

Astronomy

31

Galactic Structure, H Ii Regions, Molecular Clouds, Velocity Distribution, Astronomical Spectroscopy, H Alpha Line, Milky Way Galaxy, Stellar Evolution, Supernovae, Wolf-Rayet Stars

Scientific paper

Hα and [N II] line profiles have been obtained along two lines across the core of the giant H II region NGC 3603. The main features detected and their likely origins are as follows: (1) Several continuous components are visible across the entire region observed, with peak-to-peak velocity differences of up to 150 km s-1. These large-scale motions were most probably set up before the formation of the central cluster, possibly by the action of earlier supernovae. (2) Two smaller shell-like structures have also been detected and one of these is visible on photographs of NGC 3603. These shells are believed to be wind-driven bubbles of order 104yr old. The larger bubble may be driven by a Wolf-Rayet star.

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