Spectral Analysis in the Virtual Observatory

TL;DR

This paper presents a Virtual Observatory service enabling access, comparison, and calculation of stellar synthetic energy distributions using static and expanding non-LTE models, integrating observational data with theoretical models.

Contribution

It introduces a VO service that allows users to access pre-calculated SEDs, compute new models, and customize atomic data for detailed stellar atmosphere analysis.

Findings

Integration of GAVO and AstroGrid-D enhances data access and computation.

Users can compare observed and theoretical SEDs efficiently.

The service supports detailed, customizable stellar atmosphere modeling.

Abstract

In a collaboration of the German Astrophysical Virtual Observatory (GAVO) and AstroGrid-D, the German Astronomy Community Grid (GACG), we provide a VO service for the access and the calculation of stellar synthetic energy distributions (SEDs) based on static as well as expanding non-LTE model atmospheres. At three levels, a VO user may directly compare observed and theoretical SEDs: The easiest and fastest way is to use pre-calculated SEDs from the GAVO database. For individual objects, grids of model atmospheres and SEDs can be calculated on the compute resources of AstroGrid-D within reasonable wallclock time. Experienced VO users may even create own atomic-data files for a more detailed analyses.