Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Microvariability of line profiles in the spectrum of the star ι Her. / Kholtygin, A. F.; Galazutdinov, G. A.; Burlakova, T. E.; Valyavin, G. G.; Fabrika, S. N.; Lee, B. C.
в: Astronomy Reports, Том 50, № 3, 01.03.2006, стр. 220-231.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Microvariability of line profiles in the spectrum of the star ι Her
AU - Kholtygin, A. F.
AU - Galazutdinov, G. A.
AU - Burlakova, T. E.
AU - Valyavin, G. G.
AU - Fabrika, S. N.
AU - Lee, B. C.
PY - 2006/3/1
Y1 - 2006/3/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=33645127586&partnerID=8YFLogxK
U2 - 10.1134/S1063772906030061
DO - 10.1134/S1063772906030061
M3 - Article
AN - SCOPUS:33645127586
VL - 50
SP - 220
EP - 231
JO - Astronomy Reports
JF - Astronomy Reports
SN - 1063-7729
IS - 3
ER -
ID: 36161658