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2010MNRAS.401..924R - Mon. Not. R. Astron. Soc., 401, 924-932 (2010/January-2)
The effect of dust extinction on the observed properties of galaxies in the near-infrared.
RIAD I.F., KRAAN-KORTEWEG R.C. and WOUDT P.A.
Abstract (from CDS):
While Galactic obscuration is less prominent in the NIR, it is not negligible. In this paper, we derive empirical relations to correct isophotal radii and magnitudes of galaxies observed in the NIR for foreground absorption. We simulate extinction in the J, H and Ks bands on 64 (unobscured) galaxies from the Two Micron All Sky Survey Large Galaxy Atlas. We propose two methods for the extinction correction, the first is optimized to provide the most accurate correction and the second provides a convenient statistical correction that works adequately in lower extinction regions. The optimized correction utilizes the galaxy surface brightness, either the disc central surface brightness, µ0, or the combined disc plus bulge central surface brightness, elliptical and disc/spiral Hubble types. A detailed comparison between the different methods and their accuracy is provided.
Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS
Journal keyword(s): dust, extinction - galaxies: photometry - infrared: galaxies
Simbad objects: 68
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