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| Paper: |
The Recalibration of the UVES-POP Stellar Spectral Library |
| Volume: |
522, Astronomical Data Analysis Software and Systems XXVII |
| Page: |
591 |
| Authors: |
Borisov, S.; Chilingaria, I. V.; Rubtsov, E.; Ledoux, C.; Melo, C.; Grishin, K. |
| Abstract: |
We have re-reduced all spectra from the UVES-POP stellar spectral library
using the version 5.5.7 of the UVES pipeline and an algorithm we
designed, which allows us to remove ripples in regions where echelle orders
are stitched. These ripples are caused by the offset of a flat field with
respect to a science frame and under- or oversubtraction of scattered light.
We have also developed an approach to merge 6 UVES spectral chunks divided
by gaps in the spectral coverage by using synthetic
stellar atmospheres to predict the flux difference between the segments. At
the end, we improved the flux calibration quality to 2% or better for
85% of 430 spectra in the library. |
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