Notes on the disentangling of spectra I. Enhancement in precision

Details Notes on the disentangling of spectra I. Enhancement in precision Notes on the disentangling of spectra I. Enhancement in precision

2009-01-27

arxiv.org/abs/0901.4262v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

2 figures

Scientific paper

10.1051/0004-6361:200810810

Context: The technique of disentangling has been applied to numerous high-precision studies of spectroscopic binaries and multiple stars. Although, its possibilities have not yet been fully understood and exploited. Aims: Theoretical background aspects of the method, its latest improvements and hints for its use in practice are explained in this series of papers. Methods: In this first paper of the series, we discuss spectral-resolution limitations due to a discrete representation of the observed spectra and introduce a new method how to achieve a precision higher than the step of input-data binning. Results: Based on this principle, the latest version of the KOREL code for Fourier disentangling achieves an increase in precision for an order of magnitude.

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