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Time-Resolved Optical Spectroscopy of AM Her X-Ray Sources

Published online by Cambridge University Press:  12 April 2016

M. Mouchet ,
S.F. Van Amerongen ,
J.M. Bonnet-Bidaud  and
J.P. Osborne
M. Mouchet
Affiliation:
Observatoire de Meudon, France
S.F. Van Amerongen
Affiliation:
Astronomical Institute, University of Amsterdam, Netherlands
J.M. Bonnet-Bidaud
Affiliation:
Service d’Astrophysique, C.E.N. Saclay, France
J.P. Osborne
Affiliation:
EXOSAT Observatory, ESOC, Darmstadt, F.R.G.

Abstract

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We present high-time resolution spectroscopy of two AM Her sources E1405−451 and E1013−477. For E1405−451, the Balmer emission lines profiles can be divided into a narrow component and a broad one. The amplitudes of the radial velocity curves of these components are respectively 265±30 km/s and 390±50 km/s. The orientation of the column determined from polarimetry is not compatible with the broad component being formed in the lowest parts of the column. Photometric and spectroscopic results on E1013−477 do not confirm the previous reported 103 min. period. Rapid variability (<1.5h) as well as long term modulation (>3.3h) is present in these data.

Type
VI. Magnetic Cataclysmic Systems
Information
International Astronomical Union Colloquium , Volume 93: Cataclysmic Variables: Recent Multi-Frequency Observations and Theoretical Developments , 1987 , pp. 613 - 624
Copyright
Copyright © Reidel 1987

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