AAS 201st Meeting, January, 2003
Session 116. Galaxies - Activating
Poster, Thursday, January 9, 2003, 9:20am-4:00pm, Exhibit Hall AB

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[116.01] Dust Absorption in Spiral Galaxies from Counts of Background Objects.

B.W. Holwerda (STScI/Kapteyn Institute,RUG), R.J. Allen (STScI), P.C. van der Kruit (Kapteyn Institute, RUG), R.A. Gonzalez (Institute of Astronomy, UNAM)

The "synthetic field method" proposed by Gonzalez et. al. (1998) is designed to determine the dust opacities in nearby spirals and irregulars using the number of background galaxies detected through the foreground galaxy. These numbers are compared to those of simulated fields; the original field with an extincted Hubble Deep Field added.

We present preliminary results on cold dust absorption in arm and interarm regions and the radial distribution of absorption, based on a dataset of deep HST/WFPc2 exposures in V and I of the spiral arms of 25 relatively nearby spiral galaxies.

The author(s) of this abstract have provided an email address for comments about the abstract: holwerda@stsci.edu

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