Radiative transfer problem in dusty galaxies: photometric effects of dusty spiral arms

Details Radiative transfer problem in dusty galaxies: photometric effects of dusty spiral arms Radiative transfer problem in dusty galaxies: photometric effects of dusty spiral arms

2007-01-25

arxiv.org/abs/astro-ph/0701753v1

Astronomy and Astrophysics

Astrophysics

19 pages, 11 figures, published in Baltic Astronomy

Scientific paper

We study the effects of dusty spiral arms on the photometric properties of disk galaxies using a series of 2D radiative transfer models, approximating the arms with axially symmetrical rings. We find that dusty arms, as well as dusty disks, have a significant influence on the aperture photometry and surface brightness profiles altering colors of model galaxies. We suggest that, in addition to the conventionally modeled diffuse absorbing layers or disks, the dusty arms should be taken into account in spiral galaxy extinction studies.

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