Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-03-13
Astrophys.J.555:301-321,2001
Astronomy and Astrophysics
Astrophysics
Will appear in July 1 ApJ. Abbreviated abstract. Postscript version available at http://www.astro.caltech.edu/~clm/
Scientific paper
10.1086/321452
We report the first results of a detailed study of the star formation law in a sample of 32 nearby spiral galaxies with well-measured rotation curves, HI and H$_2$ (as traced by CO) surface density profiles, and new \Ha CCD photometry. Our results strongly support the view that the formation of gravitationally bound interstellar clouds regulates the onset of widespread star formation -- at least in the outer regions of galactic disks.
Jr.
Kennicutt Robert C.
Martin Crystal L.
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