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The paper continues the study of superfast line profile variations (LPV) in spectra of early-type stars. The multimode focal reducer SCORPIO at the 6-meter telescope (BTA) was used to obtain 1271 low-resolution spectra of ρ Leo (B1 Iab). Regular LPVs for H I, He I, Fe II, N II, O II, Si III, and other ion lines with periods from ̃ 2 to ̃ 90 minutes and an amplitude of 1-2% of the continuum level are detected. Nonregular LPVs were also detected at time intervals less then a minute. The harmonics of LPVs with periods less than 10 minutes appear to be variable. During 128 minutes of observation their periods can change by ̃ 40%. Possible causes of such fast spectral variations are discussed.
Язык оригиналаанглийский
Название основной публикацииPhysics of Magnetic Stars
Подзаголовок основной публикацииProceedings of a Conference Held at Special Astrophysical Observatory, Nizhny Arkhyz, Russia, 1-5 October 2018
РедакторыI.I. Romanyuk, I. A. Yakunin, D.O. Kudryavtsev
Место публикацииSan Francisco
ИздательAstronomical Society of the Pacific
Страницы151-153
ISBN (электронное издание)9781586819241
ISBN (печатное издание)9781583819234
СостояниеОпубликовано - 1 июл 2019
СобытиеInternational Conference "Physics of Magnetic Stars" - Nizhny Arkhyz, Российская Федерация
Продолжительность: 1 окт 20195 окт 2019

Серия публикаций

НазваниеAstronomical Society of the Pacific Conference Series
ИздательAstronomical Society of the Pacific
Том518
ISSN (электронное издание)1050-3390

конференция

конференцияInternational Conference "Physics of Magnetic Stars"
Страна/TерриторияРоссийская Федерация
ГородNizhny Arkhyz
Период1/10/195/10/19

    Предметные области Scopus

  • Физика и астрономия (все)

ID: 49301276