Stellar energy flux modelling under gridified software SYNTSPEC

Institute of Theoretical Physics and Astronomy, Vilnius University, Gostauto 12, LT-01108 Vilnius, Lithuania
e-mail: sarunas.mikolaitis@tfai.vu.lt & grazina.tautvaisiene@tfai.vu.lt

Abstract

We present a gridified stellar energy flux modelling software SYNTSPEC for stellar spectra analysis. It is an example of data- and compute-intensive application running on the testbed of the Enabling Grids for E-sciencE (EGEE) Grid compatible infrastructure, which brings the new quality to the research in astrophysics. The multi job application is running within the GRIDCOM system – a user friendly interface that allows a virtual work of a physically spread scientific group. The SYNTSPEC software calculates stellar energy fluxes and normalized to the continuum spectra that are applied for stellar classification and determination of chemical compositions, effective temperatures, surface gravities and other parameters of stars. The SYNTSPEC application benefits from usage of large computing resources, which makes possible calculations of synthetic stellar spectra for significant wavelength ranges and numbers of stellar parameter combinations. The specific energy flux modelling will be used for the analysis of data, which will be produced by the European Space Agency‘s Gaia space observatory.