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'''MOOG''' is an astronomical [[software]] package. It is an example of [[Fortran]] code that performs a variety of [[spectral line]] analysis and [[spectrum synthesis]] tasks under the assumption of [[Thermodynamic equilibrium#Local thermodynamic equilibrium|local thermodynamic equilibrium]]. Moog uses a [[model photosphere]] together with a list of [[Atomic electron transition|atomic]] or [[Molecular electronic transition|molecular]] transitions to generate an emergent [[spectrum]] by solving the [[Radiative transfer#The equation of radiative transfer|equation of radiative transfer]].

The typical use of MOOG is to assist in the determination of the [[Metallicity|chemical composition]] of a [[star]], e.g. Sneden (1973).<ref>{{citation |first = Christopher |last = Sneden |title = The nitrogen abundance of the very metal-poor star [[HD 122563]] |bibcode = 1973ApJ...184..839S |journal = Astrophysical Journal |volume = 184 |date = 1973 |pages = 839–849 |doi = 10.1086/152374}}</ref> This paper contains also the description of the first version of the code and has been cited about 240 times as of 2008-04-24 by publications in international journals studying the abundances of chemical elements in stars.

The software package has been developed and is maintained by Christopher Sneden, [[University of Texas]] at [[Austin, Texas|Austin]]. The current supported version of the code was released in August 2010 and is described in the MOOG User's Guide (see references below). Moog is written in [[Fortran#FORTRAN 77|FORTRAN 77]].

==Coding==
The coding is in various subroutines that are called from a few driver routines; these routines are written in standard FORTRAN. The standard MOOG version has been developed on unix, linux and macintosh computers.

==References==
{{reflist}}

== Further reading ==
*{{citation |first = Christopher |last = Sneden |title = The nitrogen abundance of the very metal-poor star HD 122563 |bibcode = 1973ApJ...184..839S |journal = Astrophysical Journal |volume = 184 |date = 1973 |pages = 839–849 |doi = 10.1086/152374}}
*{{citation |title = MOOG User's Guide |url = http://verdi.as.utexas.edu/codes/WRITEMOOG.ps |format = Postscript |url-status = dead |archiveurl = https://web.archive.org/web/20061230163208/http://verdi.as.utexas.edu/codes/WRITEMOOG.ps |archivedate = 2006-12-30 }}

==External links==
*[http://www.as.utexas.edu/~chris/moog.html MOOG homepage] maintained by developer Chris Sneden

[[Category:Astronomy software]]
[[Category:Fortran software]]

Moog (code) - Revision history

imported>Crouch, Swale: Disambiguating links to Austin (link changed to Austin, Texas) using DisamAssist.