Bibcode
Varela, A. M.; Beckman, J. E.; Cepa, J.; Munoz-Tunon, C.; Vilchez, J. M.
Bibliographical reference
(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. 305-310.
Advertised on:
8
1990
Citations
2
Refereed citations
1
Description
Evidence for circumnuclear starbursts in spiral galaxies can take the
form of a blue excess near the nucleus, but more frequently (because of
dust extinction) H I or radio continuum emission. Such bursts are quite
common, even in objects with no interacting companions. One consequence
of a burst is to sweep gas outward from the inner zone, so further
bursts (and perhaps the initial one) need to be resupplied with gas.
This can be effected via a nonaxisymmetric gravitational potential, not
necessarily a bar, in the nuclear bulge. Searching for these
nonaxisymmetric features, two-dimensional photometry has been obtained
from CCD maps in B, V, R, I, and Z bands, for a set of galaxies which
have undergone starburst activity.