5 papers
From gas to starburst and AGN
Johan H. Knapen
Although it is clear that the circumnuclear regions of galaxies are intimately related to their host galaxies, most directly through their bars, it remains unclear what exactly ini…
Kinematics in the Central Kiloparsec of Spiral Galaxies
Johan H. Knapen
Results from kinematic observations of the central regions of spiral galaxies are reviewed, with particular emphasis on starburst and AGN hosts. While morphological studies lead to…
Molecular gas observations and enhanced massive star formation efficiencies in M100
J. H. Knapen, J. E. Beckman, J. Cepa +1
We present new J=1-0 12-CO observations along the northern spiral arm of the grand-design spiral galaxy M100 (NGC 4321), and study the distribution of molecular hydrogen as derived…
Statistics and properties of HII regions in a sample of grand design galaxies I. Luminosity functions
M. Rozas, J. E. Beckman, J. H. Knapen
We present new high quality continuum-subtracted H alpha images of the grand-design galaxies NGC 157, NGC 3631, NGC 6764 and NGC 6951. We have determined the positions, angular siz…
The extinction by dust in the outer parts of spiral galaxies
R. F. Peletier, E. A. Valentijn, A. F. M. Moorwood +3
To investigate the distribution of dust in Sb and Sc galaxies we have analyzed near-infrared and optical surface photometry for an unbiased sample of 37 galaxies. Since light in th…