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Short Timescale Line Profile Variations in Spectra of OB Stars: the Case of ρ Leo. / Batrakov, A.A.; Kholtygin, A.F.; Fabrika, S.; Valeev, A.

Physics of Magnetic Stars: Proceedings of a Conference Held at Special Astrophysical Observatory, Nizhny Arkhyz, Russia, 1-5 October 2018. ed. / I.I. Romanyuk; I. A. Yakunin; D.O. Kudryavtsev. San Francisco : Astronomical Society of the Pacific, 2019. p. 151-153 (Astronomical Society of the Pacific Conference Series; Vol. 518).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Harvard

Batrakov, AA, Kholtygin, AF, Fabrika, S & Valeev, A 2019, Short Timescale Line Profile Variations in Spectra of OB Stars: the Case of ρ Leo. in II Romanyuk, IA Yakunin & DO Kudryavtsev (eds), Physics of Magnetic Stars: Proceedings of a Conference Held at Special Astrophysical Observatory, Nizhny Arkhyz, Russia, 1-5 October 2018. Astronomical Society of the Pacific Conference Series, vol. 518, Astronomical Society of the Pacific, San Francisco, pp. 151-153, International Conference "Physics of Magnetic Stars", Nizhny Arkhyz, Russian Federation, 1/10/19. <http://aspbooks.org/custom/publications/paper/518-0153.html>

APA

Batrakov, A. A., Kholtygin, A. F., Fabrika, S., & Valeev, A. (2019). Short Timescale Line Profile Variations in Spectra of OB Stars: the Case of ρ Leo. In I. I. Romanyuk, I. A. Yakunin, & D. O. Kudryavtsev (Eds.), Physics of Magnetic Stars: Proceedings of a Conference Held at Special Astrophysical Observatory, Nizhny Arkhyz, Russia, 1-5 October 2018 (pp. 151-153). (Astronomical Society of the Pacific Conference Series; Vol. 518). Astronomical Society of the Pacific. http://aspbooks.org/custom/publications/paper/518-0153.html

Vancouver

Batrakov AA, Kholtygin AF, Fabrika S, Valeev A. Short Timescale Line Profile Variations in Spectra of OB Stars: the Case of ρ Leo. In Romanyuk II, Yakunin IA, Kudryavtsev DO, editors, Physics of Magnetic Stars: Proceedings of a Conference Held at Special Astrophysical Observatory, Nizhny Arkhyz, Russia, 1-5 October 2018. San Francisco: Astronomical Society of the Pacific. 2019. p. 151-153. (Astronomical Society of the Pacific Conference Series).

Author

Batrakov, A.A. ; Kholtygin, A.F. ; Fabrika, S. ; Valeev, A. / Short Timescale Line Profile Variations in Spectra of OB Stars: the Case of ρ Leo. Physics of Magnetic Stars: Proceedings of a Conference Held at Special Astrophysical Observatory, Nizhny Arkhyz, Russia, 1-5 October 2018. editor / I.I. Romanyuk ; I. A. Yakunin ; D.O. Kudryavtsev. San Francisco : Astronomical Society of the Pacific, 2019. pp. 151-153 (Astronomical Society of the Pacific Conference Series).

BibTeX

@inproceedings{77cff914bbc9437cbe0e4f3a4a6826c1,
title = "Short Timescale Line Profile Variations in Spectra of OB Stars: the Case of ρ Leo",
abstract = "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.",
author = "A.A. Batrakov and A.F. Kholtygin and S. Fabrika and A. Valeev",
year = "2019",
month = jul,
day = "1",
language = "English",
isbn = "9781583819234",
series = "Astronomical Society of the Pacific Conference Series",
publisher = "Astronomical Society of the Pacific",
pages = "151--153",
editor = "Romanyuk, {I.I. } and Yakunin, {I. A.} and Kudryavtsev, {D.O. }",
booktitle = "Physics of Magnetic Stars",
address = "United States",
note = "International Conference {"}Physics of Magnetic Stars{"} ; Conference date: 01-10-2019 Through 05-10-2019",

}

RIS

TY - GEN

T1 - Short Timescale Line Profile Variations in Spectra of OB Stars: the Case of ρ Leo

AU - Batrakov, A.A.

AU - Kholtygin, A.F.

AU - Fabrika, S.

AU - Valeev, A.

PY - 2019/7/1

Y1 - 2019/7/1

N2 - 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.

AB - 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.

M3 - Conference contribution

SN - 9781583819234

T3 - Astronomical Society of the Pacific Conference Series

SP - 151

EP - 153

BT - Physics of Magnetic Stars

A2 - Romanyuk, I.I.

A2 - Yakunin, I. A.

A2 - Kudryavtsev, D.O.

PB - Astronomical Society of the Pacific

CY - San Francisco

T2 - International Conference "Physics of Magnetic Stars"

Y2 - 1 October 2019 through 5 October 2019

ER -

ID: 49301276