An internal velocity study of the Rosette Nebula.
Abstract
Emission-line profiles of H-alpha were studied at about 700 points in the Rosette Nebula by using a multislit echelle spectrograph. Numerical analysis of the profiles indicates that variations in the line-of-sight velocity occur within the nebula, reaching about + or - 20 km/s in the inner regions. Evidence is presented that these highest velocities are more probably inward, favoring a model where the central cavity is due to a depletion resulting from rapid star formation
- Publication:
-
The Astrophysical Journal
- Pub Date:
- May 1979
- DOI:
- 10.1086/157031
- Bibcode:
- 1979ApJ...229..971F
- Keywords:
-
- Astronomical Spectroscopy;
- Emission Spectra;
- Line Shape;
- Nebulae;
- Echelette Gratings;
- Numerical Analysis;
- Stellar Evolution;
- Astrophysics;
- Gaseous Nebulae:H Alpha;
- Gaseous Nebulae:Internal Motions;
- Gaseous Nebulae:Line Profiles