The Opacity of Spiral Galaxies from Counts of Distant Background Galaxies
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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.
2 pages; Proceedings, Poster presented at IAU, Sidney, July 22, 2003
2 pages; Proceedings, Poster presented at IAU, Sidney, July 22, 2003