Bibcode
Mazzuca, Lisa M.; Knapen, Johan H.; Regan, Michael W.; Böker, Torsten
Referencia bibliográfica
The Central Kiloparsec of Starbursts and AGN: The La Palma Connection, ASP Conference Proceedings Vol. 249. Edited by J. H. Knapen, J. E. Beckman, I. Shlosman, and T. J. Mahoney. ISBN: 1-58381-089-7. San Francisco: Astronomical Society of the Pacific, 2001, p. 573.
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2001
Número de citas
1
Número de citas referidas
1
Descripción
Nuclear rings in barred spiral galaxies offer an opportunity to study
starburst properties, as well as the evolution of star formation in the
central regions of galaxies. To further our understanding in these
areas, a large imaging survey of over 80 galaxies with previous evidence
for the existence of nuclear ring structure has been performed in the
Hα emission line and the B and I broad bands using the William
Herschel Telescope. Here, we present images of a subset of these
galaxies, which reveal well-resolved nuclear rings in Hα. The
rings consist of numerous ``hotspots'' (i.e., Hα-bright
star-forming regions). For each hotspot we calculate Hα equivalent
widths and compare the results to population synthesis models to obtain
age estimates. Typical cluster ages are no more than 10 Myr.