The velocity structure of the core of the giant H II region NGC 3603
Open Access
- 1 April 1986
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 219 (4) , 895-902
- https://doi.org/10.1093/mnras/219.4.895
Abstract
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: (i) 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. (ii) 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 104 yr old. The larger bubble may be driven by a Wolf-Rayet star.Keywords
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