Bibcode
Cepa, J. P.; Beckman, J. E.
Referencia bibliográfica
(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640X), vol. 170, no. 1-2, Aug. 1990, p. 209-214.
Fecha de publicación:
8
1990
Número de citas
3
Número de citas referidas
3
Descripción
The present study estimates the efficiency ratio for massive star
formation between the arms and the interarm disks of three grand design
spirals. The estimate is based on H-alpha mapping observations of the H
II regions in the galaxies. It is found that this efficiency ratio is 10
or more in the zones between the Lindblad resonances and the radius
which is inferred to be corotation, dropping to values close to unity at
these three resonance radii. These results point to a dominant influence
of resonance structure in stimulating star formation in grand design
spirals.