Eclipse mapping of the hot circumstellar plasma in Algol binaries

Details Eclipse mapping of the hot circumstellar plasma in Algol binaries Eclipse mapping of the hot circumstellar plasma in Algol binaries

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004an....325..225p&link_type=abstract

Astronomische Nachrichten, Vol.325, Issue 3, p.225-228

Astronomy and Astrophysics

Astronomy

8

Stars: Binaries: Eclipsing, Stars: Individual (V356 Sgr, Tt Hya, Ry Per), Ultraviolet Emission

Scientific paper

Phase-resolved FUV observations of three Algol-type interacting binaries (V356 Sgr, TT Hya, and RY Per) have been made during totality with the Far Ultraviolet Spectroscopic Explorer to map the location of the hot circumstellar plasma that produces emission lines of O VI, Si III,IV S IV, C III, and N II. Since O VI shows very little variation in profile, strength, and velocity as the disk of the secondary occults the line formation region, we conclude that the emission originates in material that has a substantial flow perpendicular to the orbital plane (perhaps a bipolar jet). The behavior of the emission lines from the moderate-ionization species suggests that the plasma producing these emission features has a large equatorial component.

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