Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...284..799b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 284, Sept. 15, 1984, p. 799-805.
Astronomy and Astrophysics
Astrophysics
26
Companion Stars, Eclipsing Binary Stars, Infrared Stars, Stellar Spectrophotometry, Supermassive Stars, F Stars, Stellar Envelopes, Stellar Luminosity, Stellar Models, Supergiant Stars
Scientific paper
The secondary object in the eclipsing binary system ɛ Aur has been directly detected at 5, 10, and 20 μm. During eclipse, an opacity that is wavelength-independent from 0.4 to 20 μm removes 48% of the F0 Ia primary's light. The flux from the cool secondary remains visible as the eclipse proceeds. The flux from the secondary corresponds to a blackbody at 500K with size 8×10-16sr. The secondary probably has the structure of a compact mass of stellar dimensions surrounded by a comparatively large, optically thick cloud; however, the observed bolometric luminosity of the secondary is less than 10-2 of the luminosity expected for a stellar object with the secondary's dynamical mass (>14 M_sun;).
Backman Dana E.
Becklin Eric E.
Cruikshank Dale P.
Joyce Richard R.
Simon Theodore
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