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Hα Doppler Tomography of AM Her: Evidence for Bipolar Accretion

Published online by Cambridge University Press:  12 April 2016

Christos Papadimitriou  and
Emilios Harlaftis
Christos Papadimitriou
Affiliation:
Department of Astrophysics, Astronomy and Mechanics, University of Athens, 157 84 Zografos, Athens, Greece Institute of Astronomy and Astrophysics, National Observatory of Athens, P. O. Box 20048, Athens 118 10, Greece
Emilios Harlaftis
Affiliation:
Institute of Astronomy and Astrophysics, National Observatory of Athens, P. O. Box 20048, Athens 118 10, Greece

Abstract

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We present Doppler maps of Halpha emission lines of AM Her from four differents epochs. The tomography shows a strong velocity “spot” emission at (−100,−100) km s−1 and a weaker “spot” emission at (−100,−400) km s−1 which is suggestive of bi-polar accretion onto the white dwarf with stronger emission from the main pole at phase φ=0.0.

Type
Part 5. Accretion Streams
Information
International Astronomical Union Colloquium , Volume 190: Magnetic Cataclysmic Variables , 2004 , pp. 274 - 275
Copyright
Copyright © Astronomical Society of the Pacific 2004

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