DOI

  • 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.

Язык оригиналаанглийский
Страницы (с-по)220-231
Число страниц12
ЖурналAstronomy Reports
Том50
Номер выпуска3
DOI
СостояниеОпубликовано - 1 мар 2006

    Предметные области Scopus

  • Астрономия и астрофизика
  • Космические науки и планетоведение

ID: 36161658