Analysis of the light variations of the Wolf-Rayet star WR16

Details Analysis of the light variations of the Wolf-Rayet star WR16 Analysis of the light variations of the Wolf-Rayet star WR16

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26as...84..377g&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 84, no. 2, Aug. 1990, p. 377-396. Research supported by FNRS

Statistics

Computation

12

Stellar Spectrophotometry, Variable Stars, Wolf-Rayet Stars, Autocorrelation, Computational Astrophysics, Polarimetry, Power Spectra, Stellar Magnitude

Scientific paper

This paper presents new data sets of Stromgren differential photometry observations of the Wolf-Rayet star WR16, collected at the ESO (La Silla, Chile). Results of detailed data analyses support previous findings concerning the variability of WR16, with dominating power at frequencies below 1.5/d. The variations were found to be positively correlated on time lags up to about two days, a characteristic delay larger than the time of replacement of a typical WR star wind. A simple stochastic model is developed for the low frequency variability of the star, which is able to explain the available observations.

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