Phenomenological modelling of light curves of non-eclipsing
double stars

D 2017

Phenomenological modelling of light curves of non-eclipsing double stars

MIKULÁŠEK, Zdeněk; Theodor PRIBULLA; Miloslav ZEJDA a Martin VAŇKO

Základní údaje

Originální název

Phenomenological modelling of light curves of non-eclipsing double stars

Autoři

MIKULÁŠEK, Zdeněk; Theodor PRIBULLA; Miloslav ZEJDA a Martin VAŇKO

Vydání

Praha, od s. 40-40, 1 s. 2017

Nakladatel

Variable Stars and Exoplanet Section, Czech Astronomical Society

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10308 Astronomy

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

elektronická verze "online"

Odkazy

URL

Organizační jednotka

Přírodovědecká fakulta

ISSN

Klíčová slova anglicky

(non)eclipsing binaries; phenomenological modelling

Příznaky

Mezinárodní význam

Změněno: 9. 1. 2018 16:07, doc. RNDr. Miloslav Zejda, Ph.D.

Anotace

V originále

The brightness of close non-eclipsing binary systems and eclipsing binaries besides eclipses themselves is changing due to proximity effects which are the result of the mutual interaction between components. Although the shape of resulting light curves or their segments is smooth and rather simple, the physics of proximity effects, including the deformation of components caused by tides and mutual warming and illumination, is considerably complex and untransparent. It represents one of the chief reasons that the solution of close binary star light curve modelling is a tedious process. That is why we are aiming at the building of the pertinent phenomenological light curve models that are much swifter and more flexible than the physical ones. Using our new phenomenological model we are now able to fit light curves of non-eclipsing binary simulated by the most advanced physical binary model software as a Roche or Phoebe with the accuracy of 0.0003 mag. The phenomenological model can be applied for binaries with both the circular and the elliptical orbits. The model enables to determine the eccentricity and the orientation of the elliptical orbit of the binary; as well it is apt also for the analysis of the possible apsidal motion in such systems. Obtained phenomenological model of elliptical variables provides an effective instrument for distinguishing of their light curves from double-wave ones of magnetic chemical peculiar stars. The full paper will be published elsewhere soon.

Citovat

MIKULÁŠEK, Zdeněk; Theodor PRIBULLA; Miloslav ZEJDA a Martin VAŇKO. Phenomenological modelling of light curves of non-eclipsing double stars. Online. Praha: Variable Stars and Exoplanet Section, Czech Astronomical Society, 2017, s. 40-40. ISSN 1801-5964.

@inproceedings{1401981,
   author = {Mikulášek, Zdeněk and Pribulla, Theodor and Zejda, Miloslav and Vaňko, Martin},
   address = {Praha},
   editor = {Radek Kocián},
   keywords = {(non)eclipsing binaries; phenomenological modelling},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Praha},
   pages = {40-40},
   publisher = {Variable Stars and Exoplanet Section, Czech Astronomical Society},
   title = {Phenomenological modelling of light curves of non-eclipsing double stars},
   url = {http://var.astro.cz/oejv/issues/oejv0180.pdf},
   year = {2017}
}

TY  - CONF
ID  - 1401981
AU  - Mikulášek, Zdeněk - Pribulla, Theodor - Zejda, Miloslav - Vaňko, Martin
PY  - 2017
TI  - Phenomenological modelling of light curves of non-eclipsing double stars
PB  - Variable Stars and Exoplanet Section, Czech Astronomical Society
CY  - Praha
KW  - (non)eclipsing binaries
KW  - phenomenological modelling
UR  - http://var.astro.cz/oejv/issues/oejv0180.pdf
N2  - The brightness of close non-eclipsing binary systems and eclipsing binaries besides eclipses themselves is changing due to proximity effects which are the result of the mutual interaction between components. Although the shape of resulting light curves or their segments is smooth and rather simple, the physics of proximity effects, including the deformation of components caused by tides and mutual warming and illumination, is considerably complex and untransparent. It represents one of the chief reasons that the solution of close binary star light curve modelling is a tedious process. That is why we are aiming at the building of the pertinent phenomenological light curve models that are much swifter and more flexible than the physical ones. Using our new phenomenological model we are now able to fit light curves of non-eclipsing binary simulated by the most advanced physical binary model software as a Roche or Phoebe with the accuracy of 0.0003 mag. The phenomenological model can be applied for binaries with both the circular and the elliptical orbits. The model enables to determine the eccentricity and the orientation of the elliptical orbit of the binary; as well it is apt also for the analysis of the possible apsidal motion in such systems. Obtained phenomenological model of elliptical variables provides an effective instrument for distinguishing of their light curves from double-wave ones of magnetic chemical peculiar stars. The full paper will be published elsewhere soon.
ER  -

MIKULÁŠEK, Zdeněk; Theodor PRIBULLA; Miloslav ZEJDA a Martin VAŇKO. \textit{Phenomenological modelling of light curves of non-eclipsing double stars}. Online. Praha: Variable Stars and Exoplanet Section, Czech Astronomical Society, 2017, s.~40-40. ISSN~1801-5964.

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