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EXTINCT: A computerized model of large-scale visual interstellar
extinction
Jon Hakkila,
Jeannette M. Myers, & Brett J. Stidham
Minnesota State University, Mankato
Dieter H. Hartmann
Clemson University
Abstract:
The program EXTINCT.FOR is a FORTRAN subroutine summarizing a
three-dimensional visual Galactic extinction model, based on a number of
published studies. INPUTS: Galactic latitude (degrees), Galactic
longitude (degrees), and source distance (kpc). OUTPUTS (magnitudes):
Extinction, extinction error, a statistical correction term, and an
array containing extinction and extinction error from each subroutine.
The model is useful for correcting visual magnitudes of Galactic sources
(particularly in statistical models), and has been used to find Galactic
extinction of extragalactic sources. The model's limited angular
resolution (subroutine-dependent, but with a minimum resolution of
roughly 2 degrees) is necessitated by its ability to describe
three-dimensional structure. Statistical biases are described in more
detail in AJ 114, 2043 (1997).
Subject headings: ISM: dust, extinction -- Galaxy: structure
Latest Version: 2.0.5
Submitted: 1999 June 2
Paper:
Hakkila, J., Myers, J. M., Stidman, B. J., Hartmann, D. H. 1997AJ....114.2043H
Preprint: None available
Language: Fortran 77
Platform: All
Canned Routines Called: SIND, COSD, TAND
External Explanatory Page:
extinct.html
Source Code:
extinct.for