The influence of large-scale perturbations in a circumstellar disk on the linear polarization of UX Ori stars is considered. We show that the position angle of the intrinsic linear polarization of a star surrounded by a geometrically thin flared disk cannot change significantly after the passage through the photometric minimum due to perturbations in the disk. In contrast, perturbations in a disk puffed up in the dust sublimation zone can give deflections of the plane of linear polarization of the system’s radiation up to 60°. This model allows the unusual changes in linear polarization observed in UX Ori and WW Vul after prolonged photometric minima to be explained.

Translated title of the contributionВлияние крупномасштабных возмущений в околозвездных дисках на параметры линейной поляризации звезд типа UX Ori
Original languageEnglish
Pages (from-to)664-676
Number of pages13
JournalAstronomy Letters
Volume45
Issue number10
DOIs
StatePublished - 1 Oct 2019

    Research areas

  • circumstellar environment, Herbig Ae/Be, polarization, radiative transfer, variable stars: T Tauri

    Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

ID: 87425255