PHOTOMETRIC AND SPECTROSCOPIC PECULIARITIES OF THE UNIQUE HERBIG BE STAR HD 52721 -AN ECLIPSING CLOSE BINARY SYSTEM

Authors

  • M. A. Pogodin
  • N. G. Beskrovnaya
  • S. E. Pavlovskiy
  • I. S. Guseva
  • V. V. Kuprianov
  • D. I. Gorshanov
  • O. V. Ezhkova
  • N. R. Ikhsanov
  • G. G. Valyavin

Keywords:

Eclipsing binary systems, Herbig Ae/Be stars, Circumstellar envelope

Abstract

Accurate reduction of former observational data as well as results of the newphotometric study of the Herbig Be star HD 52721 carried out in 2010 - 2013 at the Kislovodsk Mountain station of the Pulkovo Observatory showed that the period P = 1.610 days is the true orbital period of the eclipsing binary system containing two B-type components with similar parameters. This fact was completely confirmed by results of the spectroscopic investigation of this object carried out in 2009 - 2010 at two observatories (Crimean AO and OAN SPM observatory in Mexico). Azimuthal circumstellar inhomogeneities rotating rigidly with the system's components have been revealed in the internal and also in the external envelopes of the system. Possible origin of these features
is discussed.

Downloads

Published

2024-03-05

Issue

Vol. 15 No. 1 (2020)

Section

Articles