Creating and using large grids of pre-calculated model atmospheres for rapid analysis of stellar spectra
Janos Zsargo  1@  , Anabel Arrieta  2@  , Celia Rosa Fierro  3@  , Jaime Klapp  4@  , Lorena Arias  2@  , Desmond Hillier  5@  , Jurij Mendoza  6@  
1 : National Polytechnique Institute [Mexico]  (IPN)  -  Website
Av. Juan de Dios Batiz, Esq Miguel Othon de Mendizabal Col Nueva Vallejo industrielle C.P 07738 Mexico -  Mexico
2 : Universidad Iberoamericana  (Ibero)  -  Website
Prolongación Paseo de la Reforma 880, Colonia Lomas de Santa Fe, CP 01219, Ciudad de México -  Mexico
3 : Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional  (CINVESTAV)  -  Website
Avenida Politécnico Nacional 2508 Mexico-D.F. 07360 -  Mexico
4 : Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV)
5 : Department of Physics and Astronomy & Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh
6 : Institute Nacional Politecnico  (IPN)

Nowadays many sophisticated stellar atmosphere code exist for the analysis of massive star spectra. They model the full spectrum, and has been used to model OB stars, W-R stars, luminous blue variables, and even supernovae. However, they normally require the user to have substantial knowledge and experience in calculating synthetic spectra, and even then a complete analysis of a star can be very difficult and time-consuming.

Computations and modelling are greatly eased when suitable initial models are available. To expedite modelling, or to run a quick rudimentary analysis of the stellar spectra, we are undertaking a project to create a mega-grid of pre-calculated stellar atmosphere models (using the code CMFGEN) which will be available to the general astronomical community via internet. Tools are also being developed to use this database for analysis.


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