The Opacity of Spiral Galaxies from Counts of Distant Background Galaxies

2); (2) Kapteyn Institute Groningen; (3) Centro de Radioastronomia y Astrofisica; B. W. Holwerda (1; Mexico); P. C. van der Kruit (2) ((1) STScI; R. A. Gonzalez (3); R. J. Allen (1)

arxiv: astro-ph/0309183 · v1 · submitted 2003-09-05 · 🌌 astro-ph

The Opacity of Spiral Galaxies from Counts of Distant Background Galaxies

B. W. Holwerda (1 , 2) , R. A. Gonzalez (3) , R. J. Allen (1) , P. C. van der Kruit (2) ((1) STScI , (2) Kapteyn Institute Groningen , (3) Centro de Radioastronomia y Astrofisica , Mexico) This is my paper

classification 🌌 astro-ph

keywords galaxiesopacityabsorptionappliedbackgroundcoldcountsdependence

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We have applied the "Synthetic Field Method" on a sample of ~20 nearby galaxies in order to determine the opacity of their disks. We present preliminary results on the radial dependence of cold dust absorption for 3 examples. The spirals NGC4535 and NGC4725 show significant absorption at a half-light radius. UGC2302, a LSB galaxy, shows much less opacity.

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The Opacity of Spiral Galaxies from Counts of Distant Background Galaxies

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