Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/external/misc/E6004/

The ADC has expanded its resources in order to better serve our users, we have developed a new category called "external" to complement our catalogs and journal table directories. You can access the data set described here through the URL:
http://cfaku5.harvard.edu/grids.html.

The following is an abbreviated "ReadMe" document that describes this external data set.
E/VI/4            Grids of model atmospheres    (Kurucz 1998)
================================================================================
Grids of Model atmospheres
   Kurucz R.L.
   <Harvard-Smithsonian Center for Astrophysics (1998)>
================================================================================
ADC_Keywords: Models, atmosphere; External catalog

Location: http://cfaku5.harvard.edu/grids.html

Description:  
   All of the models from the Kurucz CD-ROMs are here.  Some of the models 
   that are weakly convective and have zero convection at the last point have a
   programming error that produces a small error in the flux.  This error is
   detectable when computed photometry is compared to high quality observed
   photometry.  This error has been corrected and many of the convective models
   have been recomputed.  The newer models and fluxes and colors should be used
   instead of those from CDROMs 13, 16, 17, and 19 which files are labeled
   with an extension ending in CD such as .datCD.  Strongly convective models
   are not significantly affected.  New CDs will be published.
 
   All convective models use an overshooting approximation that moves
   flux higher in the atmosphere above the top of the nominal convection zone.
   Many people do not like this approximation and want a pure unphysical
   mixing-length convection instead of an impure unphysical mixing-length
   convection.  Anyone is welcome to take the ATLAS9 programs in
   [http://cfaku5.harvard.edu/programs.html] and the distribution function 
   opacities in [http://cfaku5.harvard.edu/opacities.html]
   and to compute models with another convective treatment.  Fiorella Castelli
   has done that and has computed pure mixing-length grids for a number of
   abundances.  Those are given in directories with names suffixed with NOVER.
   The user can decide for herself.

Acknowledgements:
   Robert L. Kurucz
   Harvard-Smithsonian Center for Astrophysics
   60 Garden Street
   Cambridge, MA 02138

   Telephone 617-495-7429
   Fax 617-495-7049
   Email RKURUCZ@CFA.HARVARD.EDU

References:
   Castelli, Grattton, and Kurucz 1997, A&A 318, 841 =1997A&A...318..841C
===============================================================================
(End)                         Gail L. Schneider [SSDOO/ADC]      24-Jun-1999
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