• A. F. Kholtygin
  • G. A. Galazutdinov
  • T. E. Burlakova
  • G. G. Valyavin
  • S. N. Fabrika
  • B. C. Lee

We present the results of a search for and analysis of line-profile variations in the spectrum of the star ι Her. The observations were acquired with the 1.8 m telescope of the Bohyunsan Optical Astronomy Observatory (Republic of Korea) in May-June 2004. We obtained 69 spectra of the star with signal-to-noise ratios ≈300 and a time resolution of 5-7 min. Profile variability was revealed for six lines of HI, HeI, and SiIII, in the central parts of the lines. The variability amplitude is ≈(1-2)% in units of the intensity of the adjacent continuum. Evidence was found for cyclic variations of the lines, with periods from ≈7h to ≈2.9d. We conclude that ι Her belongs to the group of slowly pulsating stars.

Original languageEnglish
Pages (from-to)220-231
Number of pages12
JournalAstronomy Reports
Volume50
Issue number3
DOIs
StatePublished - 1 Mar 2006

    Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

ID: 36161658