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The Reliability of Echelle Spectroscopy in Hot Rotating Star Research

Published online by Cambridge University Press:  12 April 2016

Petr Škoda  and
Miroslav Šlechta
Petr Škoda
Affiliation:
Astronomical Institute of the Academy of Sciences, 251 65 Ondrejov, Czech Republic
Miroslav Šlechta
Affiliation:
Astronomical Institute of the Academy of Sciences, 251 65 Ondrejov, Czech Republic

Abstract

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For hot and rapidly rotating stars, the considerably wide line profile is spread over several echelle orders and thus a precise data reduction before merging several spectral orders together is required to obtain reliable results. As we show, the usage of automatic pipelines or wrong application of general reduction procedures may result in periodic ripple disturbances in the shape of the apparent stellar continuum and by this way introduce considerable errors into the determination of fundamental astrophysical quantities as gravity and mass of the stars.

Information

Type
Part 11. Data analysis and reduction techniques
Information
International Astronomical Union Colloquium , Volume 193: Variable Stars in the Local Group , 2004 , pp. 571 - 574
Copyright
Copyright © Astronomical Society of the Pacific 2004

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