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Superfast Line Profile Variability in the Spectra of ρ Leo : New Results. / Kholtygin, A. F.; Ikonnikova, N. P.; Dodin, A. V.; Tsiopa, O. A.

In: Astronomy Letters, Vol. 46, No. 3, 01.03.2020, p. 168-176.

Research output: Contribution to journal › Article › peer-review

Harvard

Kholtygin, AF, Ikonnikova, NP, Dodin, AV & Tsiopa, OA 2020, 'Superfast Line Profile Variability in the Spectra of ρ Leo: New Results', Astronomy Letters, vol. 46, no. 3, pp. 168-176. https://doi.org/10.1134/S1063773720030020

APA

Kholtygin, A. F., Ikonnikova, N. P., Dodin, A. V., & Tsiopa, O. A. (2020). Superfast Line Profile Variability in the Spectra of ρ Leo: New Results. Astronomy Letters, 46(3), 168-176. https://doi.org/10.1134/S1063773720030020

Vancouver

Kholtygin AF, Ikonnikova NP, Dodin AV, Tsiopa OA. Superfast Line Profile Variability in the Spectra of ρ Leo: New Results. Astronomy Letters. 2020 Mar 1;46(3):168-176. https://doi.org/10.1134/S1063773720030020

Author

Kholtygin, A. F. ; Ikonnikova, N. P. ; Dodin, A. V. ; Tsiopa, O. A. / Superfast Line Profile Variability in the Spectra of ρ Leo : New Results. In: Astronomy Letters. 2020 ; Vol. 46, No. 3. pp. 168-176.

BibTeX

@article{ede9e426ece34699b9b41515c1f52223,
title = "Superfast Line Profile Variability in the Spectra of ρ Leo: New Results",
abstract = "Abstract: The results of ultrahigh-time-resolution (ΔT ~ 12 s) observations of the B1 Iab supergiant ρ Leo with the 1.25-m telescope at the Crimean Astronomical Station of the SAI MSU are presented. Regular line profile variations with periods of 15–30 min have been revealed. Significant changes in the average line profiles on time intervals of 1–3 days have been detected. Evidence for the existence of short-period line profile variations on time scales of 15–25 min is provided. The nature of the short-period line profile variations is discussed. The possibility of studying the fast variations in the profiles of broad lines (mostly the Balmer hydrogen and He I lines) using low-resolution spectrographs with R=1000{-}2000 at 1–2-m telescopes is pointed out.",
keywords = "individual, ρ Leo, spectra, line profiles, stars, variability, spectra, individual, line profiles, rho Leo, SEARCH, SPECTROSCOPY, TIME-SERIES, MICROVARIABILITY, OB STARS",
author = "Kholtygin, {A. F.} and Ikonnikova, {N. P.} and Dodin, {A. V.} and Tsiopa, {O. A.}",
note = "Funding Information: This study was supported by the Russian Foundation for Basic Research (project no. 19-02-00311 A). We are grateful to the referee of the remarks that contributed to an improvement of the text of the paper. Publisher Copyright: {\textcopyright} 2020, Pleiades Publishing, Inc. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",
year = "2020",
month = mar,
day = "1",
doi = "10.1134/S1063773720030020",
language = "English",
volume = "46",
pages = "168--176",
journal = "Astronomy Letters",
issn = "1063-7737",
publisher = "МАИК {"}Наука/Интерпериодика{"}",
number = "3",

}

RIS

TY - JOUR

T1 - Superfast Line Profile Variability in the Spectra of ρ Leo

T2 - New Results

AU - Kholtygin, A. F.

AU - Ikonnikova, N. P.

AU - Dodin, A. V.

AU - Tsiopa, O. A.

N1 - Funding Information: This study was supported by the Russian Foundation for Basic Research (project no. 19-02-00311 A). We are grateful to the referee of the remarks that contributed to an improvement of the text of the paper. Publisher Copyright: © 2020, Pleiades Publishing, Inc. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/3/1

Y1 - 2020/3/1

N2 - Abstract: The results of ultrahigh-time-resolution (ΔT ~ 12 s) observations of the B1 Iab supergiant ρ Leo with the 1.25-m telescope at the Crimean Astronomical Station of the SAI MSU are presented. Regular line profile variations with periods of 15–30 min have been revealed. Significant changes in the average line profiles on time intervals of 1–3 days have been detected. Evidence for the existence of short-period line profile variations on time scales of 15–25 min is provided. The nature of the short-period line profile variations is discussed. The possibility of studying the fast variations in the profiles of broad lines (mostly the Balmer hydrogen and He I lines) using low-resolution spectrographs with R=1000{-}2000 at 1–2-m telescopes is pointed out.

AB - Abstract: The results of ultrahigh-time-resolution (ΔT ~ 12 s) observations of the B1 Iab supergiant ρ Leo with the 1.25-m telescope at the Crimean Astronomical Station of the SAI MSU are presented. Regular line profile variations with periods of 15–30 min have been revealed. Significant changes in the average line profiles on time intervals of 1–3 days have been detected. Evidence for the existence of short-period line profile variations on time scales of 15–25 min is provided. The nature of the short-period line profile variations is discussed. The possibility of studying the fast variations in the profiles of broad lines (mostly the Balmer hydrogen and He I lines) using low-resolution spectrographs with R=1000{-}2000 at 1–2-m telescopes is pointed out.

KW - individual, ρ Leo

KW - spectra, line profiles

KW - stars

KW - variability

KW - spectra

KW - individual

KW - line profiles

KW - rho Leo

KW - SEARCH

KW - SPECTROSCOPY

KW - TIME-SERIES

KW - MICROVARIABILITY

KW - OB STARS

UR - http://www.scopus.com/inward/record.url?scp=85089983700&partnerID=8YFLogxK

U2 - 10.1134/S1063773720030020

DO - 10.1134/S1063773720030020

M3 - Article

AN - SCOPUS:85089983700

VL - 46

SP - 168

EP - 176

JO - Astronomy Letters

JF - Astronomy Letters

SN - 1063-7737

IS - 3

ER -

ID: 71415105