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Period Analyses Without O-C Diagrams

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MIKULÁŠEK Zdeněk ZEJDA Miloslav JANÍK Jan

Rok publikování 2012
Druh Článek ve sborníku
Konference FROM INTERACTING BINARIES TO EXOPLANETS: ESSENTIAL MODELING TOOLS
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Doi http://dx.doi.org/10.1017/S1743921311027888
Obor Astronomie a nebeská mechanika, astrofyzika
Klíčová slova methods: statistical; binaries: eclipsing; variable stars: other
Popis We present a versatile method appropriate for the period analyses of observations containing phase information of all kinds of periodic or nearly periodic variable stars on the basis of phenomenological modelling of their phase curves and phase functions. The approach is based on rigorous application of a non-linear weighted least-squares method exploiting all available observational data and does not need an O-C diagram as an intermediate stage for period analyses. However, this approach enables us to determine precise times of extrema of light curves, to calculate ephemerides and construct plausible O-C diagrams. We substantiate the general applicability of the method on eclipsing binaries research.
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