Cross-correlation and maximum-likelihood analysis: A new approach to combining cross-correlation functions

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Abstract

This paper presents a new approach to combining cross-correlation functions. The combination is based on a maximum-likelihood approach and uses a non-linear combination scheme. It can be effective for radial velocity analysis of multi-order spectra, or for analysis of multiple exposures of the same object. Simulations are presented to show the potential of the suggested combination scheme. The technique has already been used to detect a very faint companion of HD 41004.

Original languageEnglish
Pages (from-to)1291-1298
Number of pages8
JournalMonthly Notices of the Royal Astronomical Society
Volume342
Issue number4
DOIs
StatePublished - 11 Jul 2003

Keywords

  • Methods: data analysis
  • Methods: statistical
  • Techniques: radial velocities
  • Techniques: spectroscopic

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