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Photometric Variability of Luminous Blue Variable Stars on Different Time-Scales

Published online by Cambridge University Press:  29 August 2019

G. Gantchev  and
P. Nedialkov
G. Gantchev
Affiliation:
Department of Astronomy, University of Sofia, Bulgaria email: g_gantchev@phys.uni-sofia.bg
P. Nedialkov
Affiliation:
Department of Astronomy, University of Sofia, Bulgaria email: g_gantchev@phys.uni-sofia.bg
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Abstract

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We have compiled historical observations, spanning ∼100 years, for a dozen of the best-studied LBVs in the Local Group. We described how we prepared structure functions for their light-curves and calculated two parameters (the structure function slope and the characteristic time-scale) to describe the behaviour of the LBVs. The sensitivity of those parameters to the variability behaviour of the stars was tested with a number of photometric data sets. The slope of the structure function may anticorrelate with the time-scale. These types of variable stellar objects are crucial to studies of stellar variability and the final stages of stellar evolution.

Keywords

Luminous Blue Variablesstructure functiontime-scale
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S339: Southern Horizons in Time-Domain Astronomy , November 2017 , pp. 87 - 90
Copyright
© International Astronomical Union 2019 

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