Stellar Spectra SIG
by
Šarūnas Mykolaitis
—
last modified
Dec 22, 2008 05:03 AM
The main objectives of Stellar Spectra SIG are calculations of normalized to the continuum stellar spectra that serves for determination of chemical composition of stars, their effective temperatures, surface gravity and turbulence motions in stellar atmospheres
SERVICES
APPLICATIONS
- SYNTSPEC
code’s main objectives are calculations of normalized to the
continuum stellar spectra that serves for determination of chemical
composition of stars, their effective temperatures, surface gravity
and turbulence motions in stellar atmospheres. The code was
originally developed at the Uppsala Astronomical Observatory in
Sweden.
- Within the framework of the BalticGrid project the Stellar Spectroscopy group of the Institute of Theoretical Physics and Astronomy of Vilnius university has upgraded and gridified a program package for the synthetic spectra modeling and is using it for:
- Chemical analysis of Galactic Red clump stars
- Chemical analysis of open clusters in the Galactic disk
- Investigation of chemical evolution of the Galactic thick disk
- Chemical analysis of stars in neighboring galaxies
- Analysis of chromospherically active stars
- The SYNTSPEC is a good example of an application that benefits usage of the Grid because of the need of powerful computing resources and high network throughput. In our future plan is the analysis of stellar spectra to be provided in great numbers by the GAIA space mission of the European Space Agency (ESA).
- The SYNTSPEC application provides a possibility to calculate stellar synthetic spectra. It requires to select several input parameters for calculations: the number of spectra to be calculated, stellar atmosphere model, input file of atomic data, range of the spectrum, parameters of the instrumental profile convolution, the compiler (g77 or Ifort), etc. The user should not care about technical SH and JDL files.
- For the preparation of the grid input files the generation script is used. The job submission is provided by the submission script. It automatically submits any number of processes to the provided clusters. An output of the application is the ASCII file that is downloaded by the traditional grid commands.
In order to joint this SIG contact the following person:
Gražina Tautvaišienė, taut (at) itpa.lt , phone: +37052610959
Institute of Theoretical Physics and Astronomy
Vilnius, Lithuania
To subscribe to the mailing list of this SIG please send empty e-mail with text "SUBSCRIBE" in a subject field to the address:
