Karolina Bąkowska

Nicolaus Copernicus University

Session X: Poster session

Thursday 14th September 2023 12:00 – 13:00

abstract:
We report the results of the polarimetric and photometric monitoring of the best-known A-type supergiant Deneb. The photometric data include the 9-years of observations (2003-2011) from the SMEI instrument aboard the Coriolis satellite and measurements provided by the TESS satellite (sector 41).
To detect periodicities and determine the frequencies of the most prominent peaks, together with their amplitude and phase, Fourier transforms (FT) of the collected light curves were performed. Polarimetric observations were obtained with the POLISH2 polarimeter at the Lick Observatory. We measured linear polarization (Stokes q and u) and detected mysterious signals at 130 and 43 days, respectively.