Shifts of Ultraviolet Lines of Symbiotic Binaries

Details Shifts of Ultraviolet Lines of Symbiotic Binaries Shifts of Ultraviolet Lines of Symbiotic Binaries

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..435..273f&link_type=abstract

Binaries - Key to Comprehension of the Universe. Proceedings of a conference held June 8-12, 2009 in Brno, Czech Republic. Edite

Astronomy and Astrophysics

Astronomy

Scientific paper

In a new study of UV emission lines of symbiotic binaries, we confirm the redshift of optically thick resonance lines of highly ionized atoms, compared with optically thin intercombination lines. We show that this is very probably due to P Cygni absorption on the short wavelength sides of the resonance lines usually with, lower velocity material in front of higher velocity material. Intercombination lines of more ionized atoms (especially of OIV]) appear to be also more redshifted with respect to corresponding lines from less ionized atoms. That might indicate downfall on to parts of an accretion disk.

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