Publication details

Emission activity of the Be star 60 Cygni



Year of publication 2017
Type Article in Periodical
Magazine / Source Serbian Astronomical Journal
MU Faculty or unit

Faculty of Science

Web článek
Field Astronomy and astrophysics
Keywords emission line; Be stars; 60 Cygni
Description In this paper we present results of spectroscopic analysis of the H® line profile of the Be star 60 Cygni. We present time evolution of the equivalent width of the H® line profiles during years 1992 - 2016 and V=R variation during years 1995 - 2016. We analyzed data from Ondřejov Observatory and from BeSS Database. The circumstellar disk of the star was present twice during years 1992 - 2016 and the second cycle shows stronger emission activity. We found out that the formation of the disk takes longer time than the disk extinction (the extinction is much steeper than the formation) and that there is no evident period of changes in the V=R variation.
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