The UV spectrum of the binary system TY Pyx

Details The UV spectrum of the binary system TY Pyx The UV spectrum of the binary system TY Pyx

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.200...47d&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 200, no. 1, p. 47-65.

Astronomy and Astrophysics

Astronomy

1

Binary Stars, Stellar Spectrophotometry, Ultraviolet Astronomy, Ultraviolet Spectra, Absorption Spectra, Emission Spectra, Iue, Line Spectra

Scientific paper

A detailed list and analysis of line identifications of five UV spectra of the RS CVn-type binary system TY Pyxidis are presented. These spectra are recorded at different phases with the IUE. Two of them are in the wavelength range 1235-1950 A while the other three in the range 2700-3110 A. The FUV spectrum of TY Pyx is mainly an emission spectrum dominated by the emission lines of the ions: CI, OI, CII, SiII, HeII, AlII, and FeIII. We also pointed out the existence of a FeIII line in absorption. The UV spectrum between 2700-3110 A is dominated by weak absorption lines. Two satellite components are indicated for many lines, which correspond to the two stars of the system, in the two out of the three spectra (LWP 13386 and LWP 13347). Violet emission wings are observed for FeI, TiI, OIV, and Si III. The UV spectrum of TY Pyx is also characterized by the multistructure of MgII resonance lines.

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