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Line profile variability and magnetic fields of Wolf-Rayet stars : WR 135 and WR 136. / Kholtygin, A. F.; Fabrika, S. N.; Rusomarov, N.; Hamann, W. R.; Kudryavtsev, D. O.; Oskinova, L. M.; Chountonov, G. A.

In: Astronomische Nachrichten, Vol. 332, No. 9-10, 01.12.2011, p. 1008-1011.

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

Harvard

Kholtygin, AF, Fabrika, SN, Rusomarov, N, Hamann, WR, Kudryavtsev, DO, Oskinova, LM & Chountonov, GA 2011, 'Line profile variability and magnetic fields of Wolf-Rayet stars: WR 135 and WR 136', Astronomische Nachrichten, vol. 332, no. 9-10, pp. 1008-1011. https://doi.org/10.1002/asna.201111595

APA

Kholtygin, A. F., Fabrika, S. N., Rusomarov, N., Hamann, W. R., Kudryavtsev, D. O., Oskinova, L. M., & Chountonov, G. A. (2011). Line profile variability and magnetic fields of Wolf-Rayet stars: WR 135 and WR 136. Astronomische Nachrichten, 332(9-10), 1008-1011. https://doi.org/10.1002/asna.201111595

Vancouver

Kholtygin AF, Fabrika SN, Rusomarov N, Hamann WR, Kudryavtsev DO, Oskinova LM et al. Line profile variability and magnetic fields of Wolf-Rayet stars: WR 135 and WR 136. Astronomische Nachrichten. 2011 Dec 1;332(9-10):1008-1011. https://doi.org/10.1002/asna.201111595

Author

Kholtygin, A. F. ; Fabrika, S. N. ; Rusomarov, N. ; Hamann, W. R. ; Kudryavtsev, D. O. ; Oskinova, L. M. ; Chountonov, G. A. / Line profile variability and magnetic fields of Wolf-Rayet stars : WR 135 and WR 136. In: Astronomische Nachrichten. 2011 ; Vol. 332, No. 9-10. pp. 1008-1011.

BibTeX

@article{271dd5fdecbe47ac852bb33daf17cb17,
title = "Line profile variability and magnetic fields of Wolf-Rayet stars: WR 135 and WR 136",
abstract = "We have obtained spectropolarimetric observations of two Wolf-Rayet stars, WR 135 (WC8) and W R136 (WN6), with the 6-m Russian telescope in July 2009 and July 2010. We have studied the He II 5412 {\AA} line region, which contains also the C IV 5469 {\AA} line (for WR 135 only). Our goals were to investigate the rapid line-profile variability (LPV) in WR star spectra and to search for magnetic fields. We find small amplitude emission peaks moving from the center of He II line to its wings during the night in spectra of both stars. These emission peaks are likely a signature of accelerating clumps in the stellar wind. We obtained upper limits of the magnetic field strength: ≈200 G for WR 135 and ≈50 G for WR 136.",
keywords = "Stars: atmospheres, Stars: magnetic fields, Stars: winds, Stars: Wolf-Rayet, Techniques: polarimetric",
author = "Kholtygin, {A. F.} and Fabrika, {S. N.} and N. Rusomarov and Hamann, {W. R.} and Kudryavtsev, {D. O.} and Oskinova, {L. M.} and Chountonov, {G. A.}",
year = "2011",
month = dec,
day = "1",
doi = "10.1002/asna.201111595",
language = "English",
volume = "332",
pages = "1008--1011",
journal = "Astronomische Nachrichten",
issn = "0004-6337",
publisher = "Wiley-Blackwell",
number = "9-10",

}

RIS

TY - JOUR

T1 - Line profile variability and magnetic fields of Wolf-Rayet stars

T2 - WR 135 and WR 136

AU - Kholtygin, A. F.

AU - Fabrika, S. N.

AU - Rusomarov, N.

AU - Hamann, W. R.

AU - Kudryavtsev, D. O.

AU - Oskinova, L. M.

AU - Chountonov, G. A.

PY - 2011/12/1

Y1 - 2011/12/1

N2 - We have obtained spectropolarimetric observations of two Wolf-Rayet stars, WR 135 (WC8) and W R136 (WN6), with the 6-m Russian telescope in July 2009 and July 2010. We have studied the He II 5412 Å line region, which contains also the C IV 5469 Å line (for WR 135 only). Our goals were to investigate the rapid line-profile variability (LPV) in WR star spectra and to search for magnetic fields. We find small amplitude emission peaks moving from the center of He II line to its wings during the night in spectra of both stars. These emission peaks are likely a signature of accelerating clumps in the stellar wind. We obtained upper limits of the magnetic field strength: ≈200 G for WR 135 and ≈50 G for WR 136.

AB - We have obtained spectropolarimetric observations of two Wolf-Rayet stars, WR 135 (WC8) and W R136 (WN6), with the 6-m Russian telescope in July 2009 and July 2010. We have studied the He II 5412 Å line region, which contains also the C IV 5469 Å line (for WR 135 only). Our goals were to investigate the rapid line-profile variability (LPV) in WR star spectra and to search for magnetic fields. We find small amplitude emission peaks moving from the center of He II line to its wings during the night in spectra of both stars. These emission peaks are likely a signature of accelerating clumps in the stellar wind. We obtained upper limits of the magnetic field strength: ≈200 G for WR 135 and ≈50 G for WR 136.

KW - Stars: atmospheres

KW - Stars: magnetic fields

KW - Stars: winds

KW - Stars: Wolf-Rayet

KW - Techniques: polarimetric

UR - http://www.scopus.com/inward/record.url?scp=83455196165&partnerID=8YFLogxK

U2 - 10.1002/asna.201111595

DO - 10.1002/asna.201111595

M3 - Article

AN - SCOPUS:83455196165

VL - 332

SP - 1008

EP - 1011

JO - Astronomische Nachrichten

JF - Astronomische Nachrichten

SN - 0004-6337

IS - 9-10

ER -

ID: 36160630