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Pipeline Reduction of Binary Light Curves from Large–Scale Surveys

Published online by Cambridge University Press:  12 July 2007

Andrej Prša  and
Tomaž Zwitter
Andrej Prša
Affiliation:
Villanova University, Dept. of Astronomy, 800 Lancaster Ave, Villanova, PA 19085, USA University of Ljubljana, Dept. of Physics, Jadranska 19, SI-1000 Ljubljana, EU emails: [email protected], [email protected]
Tomaž Zwitter
Affiliation:
University of Ljubljana, Dept. of Physics, Jadranska 19, SI-1000 Ljubljana, EU emails: [email protected], [email protected]
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Abstract

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One of the most important changes in observational astronomy of the 21st Century is a rapid shift from classical object-by-object observations to extensive automatic surveys. As CCD detectors are getting better and their prices are getting lower, more and more small and medium-size observatories are refocusing their attention to detection of stellar variability through systematic sky-scanning missions. This trend is aditionally powered by the success of pioneering surveys such as ASAS, DENIS, OGLE, TASS, their space counterpart Hipparcos and others. Such surveys produce massive amounts of data and it is not at all clear how these data are to be reduced and analysed. This is especially striking in the eclipsing binary (EB) field, where most frequently used tools are optimized for object-by-object analysis. A clear need for thorough, reliable and fully automated approaches to modeling and analysis of EB data is thus obvious. This task is very difficult because of limited data quality, non-uniform phase coverage and solution degeneracy. This paper reviews recent advancements in putting together semi-automatic and fully automatic pipelines for EB data processing. Automatic procedures have already been used to process Hipparcos data, LMC/SMC observations, OGLE and ASAS catalogs etc. We discuss the advantages and shortcomings of these procedures.

Keywords

methods: data analysisnumerical; cataloguessurveys; binaries: closeeclipsingfundamental parameters; techniques: photometricspectroscopic
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S240: Binary Stars as Critical Tools & Tests in Contemporary Astrophysics , August 2006 , pp. 217 - 229
Copyright
Copyright © International Astronomical Union 2007

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