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Super-Fast Line-Profile Variability in the Spectra of OBA Stars. II. A0 Star α2 CVn. / Kholtygin, A. F.; Batrakov, A. A.; Fabrika, S. N.; Valeev, A. F.; Kostenkov, A. E.; Tsiopa, O. A.

In: Astrophysical Bulletin, Vol. 75, No. 3, 01.07.2020, p. 278-283.

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

Harvard

Kholtygin, AF, Batrakov, AA, Fabrika, SN, Valeev, AF, Kostenkov, AE & Tsiopa, OA 2020, 'Super-Fast Line-Profile Variability in the Spectra of OBA Stars. II. A0 Star α2 CVn', Astrophysical Bulletin, vol. 75, no. 3, pp. 278-283. https://doi.org/10.1134/S1990341320030074

APA

Kholtygin, A. F., Batrakov, A. A., Fabrika, S. N., Valeev, A. F., Kostenkov, A. E., & Tsiopa, O. A. (2020). Super-Fast Line-Profile Variability in the Spectra of OBA Stars. II. A0 Star α2 CVn. Astrophysical Bulletin, 75(3), 278-283. https://doi.org/10.1134/S1990341320030074

Vancouver

Kholtygin AF, Batrakov AA, Fabrika SN, Valeev AF, Kostenkov AE, Tsiopa OA. Super-Fast Line-Profile Variability in the Spectra of OBA Stars. II. A0 Star α2 CVn. Astrophysical Bulletin. 2020 Jul 1;75(3):278-283. https://doi.org/10.1134/S1990341320030074

Author

Kholtygin, A. F. ; Batrakov, A. A. ; Fabrika, S. N. ; Valeev, A. F. ; Kostenkov, A. E. ; Tsiopa, O. A. / Super-Fast Line-Profile Variability in the Spectra of OBA Stars. II. A0 Star α2 CVn. In: Astrophysical Bulletin. 2020 ; Vol. 75, No. 3. pp. 278-283.

BibTeX

@article{85173be27cce4270bd6f1c2ea04ea381,
title = "Super-Fast Line-Profile Variability in the Spectra of OBA Stars. II. A0 Star α2 CVn",
abstract = "Abstract—This study continues the investigation of the super-fast variability of line profiles in the spectra of stars of early spectral classes performed in 2017 and 2018. We investigated the variability of line profiles in the spectra of OBA stars with the SCORPIO multi-mode focal reducer at the 6-m SAO RAS telescope (BTA). Short-period regular variations of the H and He lines were detected in the spectra of the chemically peculiar A0Vp star α2 CVn with periods ranging from approximately 30 to 135 minutes. Using the windowed Fourier transform let us detect the transient quasi-regular variations in the Balmer-line profiles with periods of 3–6 minutes. We discuss a possible origin of fast spectral variations.",
keywords = "stars: chemically peculiar, stars: individual: α CVn, stars: magnetic field, MCP STARS, stars: individual: alpha(2) CVn, SPECTROSCOPY, VOLUME-LIMITED SURVEY, stars: magnetic field, stars: chemically peculiar, 100 PC",
author = "Kholtygin, {A. F.} and Batrakov, {A. A.} and Fabrika, {S. N.} and Valeev, {A. F.} and Kostenkov, {A. E.} and Tsiopa, {O. A.}",
note = "Funding Information: This study is partially supported by RFBR grant 19-02-00311 A. Observations with the SAO RAS telescopes are supported by the Ministry of Science and Higher Education of the Russian Federation (including agreement No. 05.619.21.0016, project ID RFMEFI61919X0016). Publisher Copyright: {\textcopyright} 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",
year = "2020",
month = jul,
day = "1",
doi = "10.1134/S1990341320030074",
language = "English",
volume = "75",
pages = "278--283",
journal = "Astrophysical Bulletin",
issn = "1990-3413",
publisher = "МАИК {"}Наука/Интерпериодика{"}",
number = "3",

}

RIS

TY - JOUR

T1 - Super-Fast Line-Profile Variability in the Spectra of OBA Stars. II. A0 Star α2 CVn

AU - Kholtygin, A. F.

AU - Batrakov, A. A.

AU - Fabrika, S. N.

AU - Valeev, A. F.

AU - Kostenkov, A. E.

AU - Tsiopa, O. A.

N1 - Funding Information: This study is partially supported by RFBR grant 19-02-00311 A. Observations with the SAO RAS telescopes are supported by the Ministry of Science and Higher Education of the Russian Federation (including agreement No. 05.619.21.0016, project ID RFMEFI61919X0016). Publisher Copyright: © 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/7/1

Y1 - 2020/7/1

N2 - Abstract—This study continues the investigation of the super-fast variability of line profiles in the spectra of stars of early spectral classes performed in 2017 and 2018. We investigated the variability of line profiles in the spectra of OBA stars with the SCORPIO multi-mode focal reducer at the 6-m SAO RAS telescope (BTA). Short-period regular variations of the H and He lines were detected in the spectra of the chemically peculiar A0Vp star α2 CVn with periods ranging from approximately 30 to 135 minutes. Using the windowed Fourier transform let us detect the transient quasi-regular variations in the Balmer-line profiles with periods of 3–6 minutes. We discuss a possible origin of fast spectral variations.

AB - Abstract—This study continues the investigation of the super-fast variability of line profiles in the spectra of stars of early spectral classes performed in 2017 and 2018. We investigated the variability of line profiles in the spectra of OBA stars with the SCORPIO multi-mode focal reducer at the 6-m SAO RAS telescope (BTA). Short-period regular variations of the H and He lines were detected in the spectra of the chemically peculiar A0Vp star α2 CVn with periods ranging from approximately 30 to 135 minutes. Using the windowed Fourier transform let us detect the transient quasi-regular variations in the Balmer-line profiles with periods of 3–6 minutes. We discuss a possible origin of fast spectral variations.

KW - stars: chemically peculiar

KW - stars: individual: α CVn

KW - stars: magnetic field

KW - MCP STARS

KW - stars: individual: alpha(2) CVn

KW - SPECTROSCOPY

KW - VOLUME-LIMITED SURVEY

KW - stars: magnetic field, stars: chemically peculiar

KW - 100 PC

UR - http://www.scopus.com/inward/record.url?scp=85091275820&partnerID=8YFLogxK

U2 - 10.1134/S1990341320030074

DO - 10.1134/S1990341320030074

M3 - Article

AN - SCOPUS:85091275820

VL - 75

SP - 278

EP - 283

JO - Astrophysical Bulletin

JF - Astrophysical Bulletin

SN - 1990-3413

IS - 3

ER -

ID: 71414879