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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..
Vise andre og tillknytning
2017 (engelsk)Inngår i: Stars: From Collapse To Collapse / [ed] Balega, YY Kudryavtsev, DO Romanyuk, II Yakunin, IA, 2017, Vol. 510, s. 220-223Konferansepaper, Publicerat paper (Fagfellevurdert)
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.

sted, utgiver, år, opplag, sider
2017. Vol. 510, s. 220-223
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-347313ISI: 000411770200054ISBN: 978-1-58381-904-3 (tryckt)OAI: oai:DiVA.org:uu-347313DiVA, id: diva2:1194158
Konferanse
Conference on Stars: From Collapse to Collapse. Special Astrophys Observ, Nizhny Arkhyz, RUSSIA, OCT 03-07, 2016
Tilgjengelig fra: 2018-03-29 Laget: 2018-03-29 Sist oppdatert: 2018-03-29bibliografisk kontrollert

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