Towards an Understanding of Radial Velocity Shift in Uv Spectra of Symbiotic Stars

Details Towards an Understanding of Radial Velocity Shift in Uv Spectra of Symbiotic Stars Towards an Understanding of Radial Velocity Shift in Uv Spectra of Symbiotic Stars

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap%26ss.296..441m&link_type=abstract

Astrophysics and Space Science, Volume 296, Issue 1-4, pp. 441-444

Astronomy and Astrophysics

Astrophysics

1

Symbiotic Binaries, Circumstellar Matter, Mass Loss, Ci Cyg

Scientific paper

A systematic redshift of high ionization resonance emission lines relative to the intercombination lines was found by Friedjung et al. (1883, A & A 126, 4071983) in the UV spectra of a number of symbiotic binaries. The interpretation was not then clear. We present a study of archival IUE and GHRS/HST spectra of the symbiotic binary CI Cyg. The shift varies during the orbital cycle which can be understood in terms of the presence of strong circum-binary line absorption formed in an outer expanding region.

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