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| Paper: |
The Reliability of Echelle Spectroscopy in Hot Rotating Star Research |
| Volume: |
310, Variable Stars in the Local Group (IAU Colloquium 193) |
| Page: |
571 |
| Authors: |
Skoda, P.; Slechta, M. |
| Abstract: |
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. |
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