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Have Non-Magnetic Stars a Complex Geometry?

Published online by Cambridge University Press:  12 April 2016

Francesco A. Catalano
Francesco A. Catalano*
Affiliation:
Istituto di Astronomia and C.N.R.-G.N.A. Unità di Ricerca di Catania Città Universitaria, I-95125 Catania, Italia

Abstract

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The existence of non-magnetic CP stars among the ones in the CP2 and CP4 groups is discussed. Assuming to be non-magnetic a star in which the magnetic field has been measured but no value in excess of the 3σ level has been detected, the implications of the spectrum and/or light variability observed in some such stars are discussed. Since the overall properties of non-magnetic stars do not differ significantly from those of the magnetic ones and a similar variability phenomenology has been observed in several such stars, the probable presence of a weak large scale organized magnetic field is argued.

Type
III. Magnetic Versus Non-Magnetic Stars
Information
International Astronomical Union Colloquium , Volume 138: Peculiar versus Normal Phenomena in A-Type and Related Stars , 1993 , pp. 315 - 326
Copyright
Copyright © Astronomical Society of the Pacific 1993

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