The 1982 ultraviolet eclipse of the symbiotic binary AR Pav

Details The 1982 ultraviolet eclipse of the symbiotic binary AR Pav The 1982 ultraviolet eclipse of the symbiotic binary AR Pav

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...275..271h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 275, Dec. 1, 1983, p. 271-277. NASA-NSF-supported research.

Astronomy and Astrophysics

Astronomy

13

Companion Stars, Eclipsing Binary Stars, Hot Stars, M Stars, Stellar Spectra, Ultraviolet Astronomy, Giant Stars, Iue, Light Curve, Stellar Models

Scientific paper

Observations with the International Ultraviolet Explorer (IUE) of the symbiotic binary AR Pav through its 1982 eclipse show that the hot star is not eclipsed. The hot star is associated with an extended region of continuum emission which is partially eclipsed. The eclipsed radiation is hotter near to its center, with a maximum temperature of about 9000 K. The uneclipsed flux is hotter than this. UV emission lines are not measurably eclipsed and presumably arise in a much larger region than the continuum. These data provide new constraints on models of the system but also are apparently in contradiction to those based on ground-based data.

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