Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2011-12-13
Proceedings of EURO-VO Workshop Astronomical Spectroscopy and Virtual Observatory, ESAC, 21-23 March 2007, Villafranca del Cas
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
Paper presented as an invited lecture at the EURO-VO workshop Astronomical Spectroscopy and Virtual Observatory, ESAC, Spain,
Scientific paper
The proper scientific analysis of a large amount of stellar spectra requires certain capabilities of the analysing tool (e.g. precise semi-automatic fitting for normalisation of the continuum or line-list assisted measurement of spectral lines) as well as flexible list-driven datafile handling. While most astronomical legacy packages comprise powerful analysing and data management features allowing rapid processing of quite complex data, current VO tools are lacking support of even basic capabilities commonly used in stellar spectroscopy. Especially the high resolution optical spectroscopy of stars with rapid line profile variations or of those with complicated emission profiles benefits from a number of specific methods unsupported in todays Virtual Observatory (VO) tools and even lacking definition in VO spectral protocols. In our contribution we identify these techniques, describe their possible implementations and finally give a short overview of several VO-compatible tools emphasising their deficiencies and comparing with the capabilities of common legacy packages.
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