Intensity interferometry of P Cygni in the H$\alpha$ emission line: towards distance calibration of LBV supergiant stars

Rivet J. -P.,Siciak A.,de Almeida E. S. G.,Vakili F.,de Souza A. Domiciano, Fouché M.,Lai O., Vernet D.,Kaiser R.,Guerin W.

Monthly Notices of the Royal Astronomical Society（2020）

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摘要

We present intensity interferometry of the luminous blue variable P Cyg in the light of its H α emission performed with 1 m-class telescopes. We compare the measured visibility points to synthesized interferometric data based on the CMFGEN physical modelling of a high-resolution spectrum of P Cyg recorded almost simultaneously with our interferometry data. Tuning the stellar parameters of P Cyg an...

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techniques: interferometric,stars: distances,stars: massive,stars: winds, outflows

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