Kinematics of Star Forming Regions
Abstract
The cubic approximation of a general two-dimensional velocity field is used to study the radial velocities of 218 star forming regions up to 10 kpc from the sun. It is found that departures from the Galactic circular flow are generally related to complexes of star forming regions 1-2 kpc in size. It is suggested that complexes are a consequence of clumped star formation and subsequent expansion of multisupernova remnants. The results imply that the negative departure from circular motion observed in complexes P(1)-P(4) may be due to the influence of the Perseus spiral arm.
- Publication:
-
Bulletin of the Astronomical Institutes of Czechoslovakia
- Pub Date:
- February 1989
- Bibcode:
- 1989BAICz..40...42A
- Keywords:
-
- H Ii Regions;
- Interstellar Matter;
- Kinematics;
- Radial Velocity;
- Star Formation;
- Supernova Remnants;
- Galactic Nuclei;
- Gas Ionization;
- Molecular Clouds;
- Molecular Gases;
- Astrophysics