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Measurements of the magnetic field in WD 1658+441

Published online by Cambridge University Press:  07 August 2014

J. Ramírez Vélez ,
D. Hiriart ,
G. Valyavin ,
J. Valdez ,
F. Quiroz ,
B. Martínez ,
S. Plachinda  and
E. Iñiguez-Garín
J. Ramírez Vélez
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México. Km. 103 Carretera Tijuana Ensenada, CP 22860, México. email: julio@astrosen.unam.mx
D. Hiriart
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México. Km. 103 Carretera Tijuana Ensenada, CP 22860, México. email: julio@astrosen.unam.mx
G. Valyavin
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Karachai-Cherkessian, Russia369167
J. Valdez
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México. Km. 103 Carretera Tijuana Ensenada, CP 22860, México. email: julio@astrosen.unam.mx
F. Quiroz
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México. Km. 103 Carretera Tijuana Ensenada, CP 22860, México. email: julio@astrosen.unam.mx
B. Martínez
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México. Km. 103 Carretera Tijuana Ensenada, CP 22860, México. email: julio@astrosen.unam.mx
S. Plachinda
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Karachai-Cherkessian, Russia369167
E. Iñiguez-Garín
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México. Km. 103 Carretera Tijuana Ensenada, CP 22860, México. email: julio@astrosen.unam.mx
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Abstract

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We present the preliminary results of the measurements of longitudinal magnetic field of the massive white dwarf 1658+441. This star have an hydrogen pure atmosphere (e.g. Dupuis & Chayer, 2003). We have observed the target in a total of 18 hrs during 3 consecutive nights in June 2010 and one more in May 2011. The data was acquired with a prototypical spectropolarimeter at the San Pedro Martir Telescope in Mexico. We have tested the magnetic field measurements with our instrument using the famous Babcock's star obtaining consistent results with previous studies. For our object of study, the WD 1658+441, we have measured variable intensities of the longitudinal magnetic field of Blong = 720 kG that oscillates with an amplitude of 130 kG.

Keywords

WD1658+441HD215441stellar magnetic fieldsspectropolarimetry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S302: Magnetic Fields throughout Stellar Evolution , August 2013 , pp. 402 - 403
Copyright
Copyright © International Astronomical Union 2014 

References

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