IUE observations of accretion columns in two Zeta Aurigae-type systems

Details IUE observations of accretion columns in two Zeta Aurigae-type systems IUE observations of accretion columns in two Zeta Aurigae-type systems

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...301..275a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 301, Feb. 1, 1986, p. 275-285.

Astronomy and Astrophysics

Astronomy

11

Eclipsing Binary Stars, Secular Variations, Spaceborne Astronomy, Stellar Mass Accretion, Ultraviolet Spectra, Absorption Spectra, Emission Spectra, Iue, Plasma Density, Spectral Line Width

Scientific paper

This paper reports the existence of an accretion column in 32 Cyg. It also confirms the presence of the accretion column in ζ Aur and reports the detection of secular variations. Mg II observations support the parameters derived by Ahmad, Chapman, and Kondo for ζ Aur but suggest that the column may be curved. A C IV and Si IV emission component is seen in ζ Aur but not in 32 Cyg. Resonance line equivalent widths have been calculated and the implications for flow geometry, secular variability, and plasma density are discussed.

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