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Magnetic field of the classical Cepheid η Aql: new results

Published online by Cambridge University Press:  07 August 2014

V. Butkovskaya ,
S. Plachinda ,
D. Baklanova  and
V. Butkovskyi
V. Butkovskaya
Affiliation:
Crimean Astrophysical Observatory of Taras Shevchenko National University of Kyiv, 98409, Nauchny, Crimea, Ukraine, email: varya@crao.crimea.ua
S. Plachinda
Affiliation:
Crimean Astrophysical Observatory of Taras Shevchenko National University of Kyiv, 98409, Nauchny, Crimea, Ukraine, email: varya@crao.crimea.ua
D. Baklanova
Affiliation:
Crimean Astrophysical Observatory of Taras Shevchenko National University of Kyiv, 98409, Nauchny, Crimea, Ukraine, email: varya@crao.crimea.ua
V. Butkovskyi
Affiliation:
Taurida National V. I.Vernadsky University, 95007, Vernadskogo str. 4, Simferopol, Crimea, Ukraine
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Abstract

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We present the results of the spectropolarimetric study of the classical Cepheid η Aql in 2002, 2004, 2010, and 2012. The longitudinal magnetic field of η Aql was found to be variable with the pulsation cycle of 7.176726 day. The amplitude, phase, and mean value of the field vary from year to year presumably due to stellar rotation or dynamo mechanisms.

Keywords

stars: magnetic fieldsstars: oscillationsstars: individual (η Aql)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S302: Magnetic Fields throughout Stellar Evolution , August 2013 , pp. 381 - 382
Copyright
Copyright © International Astronomical Union 2014 

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