Astrophysics and Space Science

, Volume 130, Issue 1–2, pp 91–102 | Cite as

Continuum distributions and line profiles of UX UMa-type novalike systems

II. Radio, IR and Optical Observations

Abstract

Combined UV, optical and, in part, IR continuum distributions of the UX UMa-systems CPD-48°1577, V3885 Sgr, RW Sex and of the recently discovered cataclysmic system PHL 227 were determined from multi-wavelength spectroscopic and photometric data to search for general characteristics of these systems. The observed variations of the UV to IR spectroal indices are qualitatively very similar for all systems, whereas the absolute values show significant differences in the far and near UV ranges. The wavelength dependence of the optical and IR spectral indices as well as the variations of the Balmer line profiles lie within the range of model spectra of optically thick and stationary accretion disks with stellar atmosphere characteristics. The different behavior of the far UV spectral indices can be explained by the excess radiation from an extended and optically thick boundary layer, which depends mainly on the orbital inclination.

Keywords

Boundary Layer Spectral Index Line Profile Accretion Disk Continuum Distribution 

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References

  1. Brown, A., Kilkenny, D.: 1979, Monthly Notices Roy. Astron. Soc.187, 823Google Scholar
  2. Bruch, A.: 1984, Astron. Astrophys. Suppl. Ser.56, 441Google Scholar
  3. Burkert, A., Hensler, G.: 1985, inProc. ESA Workshop: Recent Results on Cataclysmic Variables, Bamberg, ESA SP-236, p67Google Scholar
  4. Cowley, A.P., Crampton, D., Hesser, J.E.: 1977, Publ. Astron. Soc. Pacific89, 716Google Scholar
  5. Epchtein, N.: 1985, private communicationGoogle Scholar
  6. Greenstein, J.L., Oke, J.B.: 1982, Astrophys. J.258, 209Google Scholar
  7. Haug, K., Drechsel, H.: 1985, Astron. Astrophys.151, 157Google Scholar
  8. Herter, T., Lacasse, M.G., Wesemael, F., Winget, D.E.: 1979, Astrophys. J. Suppl.39, 513Google Scholar
  9. Hunger, K., Heber, U., Koester, D.: 1985, Astron. Astrophys.149, L4Google Scholar
  10. La Dous, C.: 1985, inProc. ESA Workshop: Recent Results on Cataclysmic Variables, Bamberg, ESA SP-236, p217Google Scholar
  11. La Dous, C.: 1986, inSynthetische Spektren stationaerer Akkretionsscheiben, PhD-thesis, Ludwig-Maximilians-Universitaet, Munich, F.R.G.Google Scholar
  12. Panek, R.J.: 1979, Astrophys. J.234, 1016Google Scholar
  13. Wargau, W., Drechsel, H., Rahe, J., Bruch, A.: 1983, Monthly Notices Roy. Astron. Soc.204, 35pGoogle Scholar

Copyright information

© D. Reidel Publishing Company 1987

Authors and Affiliations

  • K. Haug
    • 1
  1. 1.Dr. Remeis Observatory BambergAstronomical Institute of the University Erlangen-NürnbergBambergF.R.G.

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