Volume 382, Number 2, FebruaryI 2002
|Page(s)||752 - 757|
|Section||Numerical methods and codes|
|Published online||15 February 2002|
An optimal extraction of spatially blended spectra
Department of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK
Corresponding author: firstname.lastname@example.org
Accepted: 21 November 2001
We describe an algorithm to optimally extract individual spectra of blended sources from a long slit spectrum. A semi-analytic model for the spatial profile is used: a Voigt profile for the undersampled core with a numerical correction applied to the wings. This is derived from an isolated source which must also be placed on the slit. fitting is used to separate the blended components with maximum weight given to the best data. We demonstrate the successful application of the algorithm to data on two X-ray binaries in crowded fields: XTE J2012+381 and V404 Cyg.
Key words: techniques: spectroscopic
© ESO, 2002
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