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: http://www.arcetri.astro.it/~sbianchi/attenuation.html
Дата изменения: Fri Mar 29 11:40:32 2002 Дата индексирования: Tue Oct 2 03:00:33 2012 Кодировка: Поисковые слова: reflection nebula |
Abstract: We present an extensive study of the radiative
transfer in dusty galaxies based on Monte Carlo simulations. The main output
of these simulations are the attenuation curves A_l (i.e. the ratio between
the observed, dust extinguished, total intensity to the intrinsic unexstinguished
one of the galaxy as a function of wavelength). We have explored the dependence
of A_l on a conspicuous set of quantities (Hubble type, inclination, dust
optical thickness, dust distribution and extinction properties) for a large
wavelength interval, ranging from 1250A to the K band, thus finally providing
a comprehensive atlas of dust extinction in galaxies, which is electronically
available. This study is particularly suitable for inclusion into galaxy
formation evolution models and to directly interpret observational data
on high redshift galaxies. (The ApJS electronic version of the paper is
available
here
)
Description of the data files: in each of the
attenuation law files [att] or absorbed energy files [abs], the basic table
element gives values of the attenuation law and fraction of total energy
absorbed, respectively, as a function of wavelength and optical depth of
the model in the V-band. e.g. a basic table element:
lambda (A)----> tauV 1250 1515 1775 1995 2215 2480 2895 3605 4413 5512 6594 8059 12369 21578 0.1 1.00 1.00 1.01 1.00 0.99 1.00 1.01 1.01 1.01 1.01 1.01 1.01 1.01 1.00 | 0.5 0.95 0.98 0.98 0.95 0.91 0.97 0.98 1.00 1.00 1.00 1.00 1.00 1.01 1.00 | 1.0 0.88 0.93 0.93 0.88 0.83 0.90 0.94 0.97 0.98 0.99 0.99 1.00 1.00 1.01 | 2.0 0.77 0.85 0.85 0.76 0.71 0.81 0.86 0.91 0.92 0.94 0.97 0.99 1.00 1.01 | 5.0 0.61 0.68 0.68 0.61 0.54 0.64 0.70 0.77 0.79 0.82 0.86 0.92 0.96 1.00 \/ 10.0 0.49 0.56 0.56 0.48 0.43 0.52 0.57 0.64 0.66 0.70 0.74 0.81 0.89 0.97 20.0 0.38 0.44 0.44 0.38 0.34 0.41 0.46 0.52 0.53 0.57 0.61 0.69 0.77 0.93 50.0 0.28 0.32 0.32 0.27 0.24 0.30 0.33 0.38 0.39 0.42 0.46 0.52 0.61 0.80
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