IUE investigation of mass flow in the interacting binary U Sagittae

Details IUE investigation of mass flow in the interacting binary U Sagittae IUE investigation of mass flow in the interacting binary U Sagittae

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...378..281m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 378, Sept. 1, 1991, p. 281-285.

Astronomy and Astrophysics

Astrophysics

7

Eclipsing Binary Stars, Iue, Mass Flow, Resonance Lines, Ultraviolet Spectra, Carbon, High Resolution, Light Curve, Nitrogen, Silicon

Scientific paper

Fifteen far-UV and 13 mid-UV high-resolution spectra of the interacting Algol-type binary U Sagittae have been obtained with the IUE satellite. The resonance lines of Si IV and C IV are present in absorption of moderate strength at all phases. At several phases, weak absorption due to the N V resonance lines is present. The high-temperature pseudophotospheric region which is found surrounding the equatorial regions of the primary star in all active Algol-type binaries is present in U Sge, indicating that it is not as dormant as once believed. This is also consistent with recent ground-based studies.

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