Efficiency of massive star formation in grand design spirals

Bibcode
1990Ap&SS.170..209C
DOI
10.1007/BF00652669
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 autores
2
Número de autores del IAC
0
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.
Tipo
Sin árbitro
Modelo de onda de densidad
Regiones H II
Galaxias espirales

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