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On the Nature of Rotation Period Variability of Magnetic Stars
Masaryk Univ, Brno, Czech Republic..
Masaryk Univ, Brno, Czech Republic..
Masaryk Univ, Brno, Czech Republic..
Tennessee State Univ, Nashville, TN 37203 USA..
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2017 (English)In: Stars: From Collapse To Collapse / [ed] Balega, YY Kudryavtsev, DO Romanyuk, II Yakunin, IA, 2017, Vol. 510, p. 220-223Conference paper, Published paper (Refereed)
Abstract [en]

The magnetic chemically peculiar (mCP) stars of the upper main sequence exhibit periodic light, magnetic, radio, and spectroscopic variations that can be adequately explained by a model of a rigidly rotating magnetized star with persistent surface structures. The majority of mCP stars rotate at strictly constant periods. However, there are a few mCP stars whose rotation periods vary on timescales of decades while the shape of their phase curves remains unchanged. In the case of CU Vir and V901 Ori, we have detected cyclic period variations. We demonstrate that the period oscillations of CU Vir may be a consequence of the interaction of the internal magnetic field and differential rotation.

Place, publisher, year, edition, pages
2017. Vol. 510, p. 220-223
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-347313ISI: 000411770200054ISBN: 978-1-58381-904-3 OAI: oai:DiVA.org:uu-347313DiVA, id: diva2:1194158
Conference
Conference on Stars: From Collapse to Collapse. Special Astrophys Observ, Nizhny Arkhyz, RUSSIA, OCT 03-07, 2016
Available from: 2018-03-29 Created: 2018-03-29 Last updated: 2018-03-29Bibliographically approved

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Shultz, Matthew

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