Hostname: page-component-848d4c4894-p2v8j Total loading time: 0.001 Render date: 2024-05-26T23:23:30.987Z Has data issue: false hasContentIssue false
  • English
  • Français

Absorption by Cyclotron Harmonics in the Optical Spectrum of VV Puppis

Published online by Cambridge University Press:  12 April 2016

H.S. Stockman ,
James Liebert  and
Howard E. Bond
H.S. Stockman
Affiliation:
Steward Observatory, University of Arizona
James Liebert
Affiliation:
Steward Observatory, University of Arizona
Howard E. Bond
Affiliation:
Department of Physics and Astronomy, Louisiana State University

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Most theoretical models of the AM Her variables (AM Her, AN UMa, W Pup and 2A0311-22) rely on strong cyclotron emission at the fundamental cyclotron frequency and higher harmonics to produce the observed, strongly-polarized optical continuum (e.g. Lamb and Masters 1979). The cyclotron lines, which presumably originate in the hot, isothermal accretion shock at the surface of the white dwarf (kT ≳ 10 keV, h/R* ≲ 0.1), should be blurred into a continuous spectrum by both optical depth effects and electron Doppler broadening. Thus the lack of even weak cyclotron features in the optical spectra of these objects is still compatible with a cyclotron origin.

Type
Colloquium Session V
Information
International Astronomical Union Colloquium , Volume 53: White Dwarfs and Variable Degenerate Stars , August 1979 , pp. 334 - 340
Copyright
Copyright © The University of Rochester 1979

References

Chamnugam, G. and Wagner, R.L. 1978, Ap.J., 222, 641.CrossRefGoogle Scholar
Greenstein, J.L., Sargent, W.L.W., Boroson, T.A. and Boksenberg, A. 1977, Ap.J. (Letters), 218, L121.CrossRefGoogle Scholar
Lamb, D.Q., and Masters, A.R. 1979, Ap.J. (Letters), in press.Google Scholar
Liebert, J., Stockman, H.S., Angel, J.R.P., Woolf, N.J., Hege, E.K., and Margon, B. 1978, Ap.J., 225, 201.Google Scholar
Liebert, J. and Stockman, H.S. 1979, Ap.J., 229, 652.Google Scholar
Masters, A.R., Pringle, J.E., Fabian, A.C. and Rees, M.J. 1977, Mon. Not. R.A.S., 178, 501.Google Scholar
Stockman, H.S., Schmidt, G.D., Angel, J.R.F., Liebert, J., Tapia, S., and Beaver, E.A. 1977, Ap.J., 217, 815.Google Scholar
Visvanathan, N. and Wickramasinghe, D.T. 1979, IAU Circ. No. 3340.Google Scholar
Wickramasinghe, D.T. and Visvanathan, N. 1979 preprint. (WV)Google Scholar