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H II Region Statistics in Barred and Non-Barred Galaxies

Published online by Cambridge University Press:  12 April 2016

M. Rozas ,
J. E. Beckman  and
J. H. Knapen
M. Rozas
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Canarias, Spain
J. E. Beckman
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Canarias, Spain
J. H. Knapen
Affiliation:
Université de Montréal, Dép. de Physique, C.P. 6128, Succ. Centre Ville, Montréal, Québec, H3C 3J7 Canada.

Abstract

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We present new high quality Ha continuum-subtracted images of the grand design galaxies NGC 157, NGC 3631, NGC 6764, and NGC 6951, two of them barred and two non-barred, and describe the statistical properties of the HII regions. We have determined the positions, angular sizes and fluxes of individual HII regions, and construct luminosity functions and diameter and density distributions. We find no significant differences between arm and interarm HII region properties, or between the barred and non-barred galaxies. This paper summarizes work described in more detail by Rozas et al. (1995a,b)

Type
Posters for Part I and Part II
Information
International Astronomical Union Colloquium , Volume 157: Barred Galaxies , 1996 , pp. 114 - 116
Copyright
Copyright © Astronomical Society of the Pacific 1996

References

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