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astro-ph1995
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…
astro-ph1995
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…
astro-ph1995
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…