Bibcode
Cepa, J.; Beckman, J. E.
Referencia bibliográfica
(Instituto de Astrofisica de Canarias and Comision Interministerial de Ciencia y Tecnologia, Summer School on Evolutionary Phenomena in Galaxies, Puerto de la Cruz, Spain, July 4-15, 1988) Astrophysics and Space Science (ISSN 0004-640X), vol. 156, no. 1-2, June 1989, p. 289-293.
Fecha de publicación:
6
1989
Número de citas
5
Número de citas referidas
4
Descripción
The efficiency ratio of massive star formation in the arms of the spiral
NGC 628 to that in the interarm region has been determined from the
sizes and positions of its H II regions following the method described
in Cepa and Beckman (1989). The variation of this relative star
formation efficiency with radius shows a very similar behaviour for each
of the three arms of this galaxy, with a minimum at 100 arc sec from the
center, which can be identified with the corotation radius assuming a
pattern speed of 56 km/s kpc. The results support the hypothesis that
the spiral arms of NGC 628 are driven by a density wave which triggers
the star formation according to the spiral density wave theory.