학술논문
Infrared peak in HZ Herculis prior to X-ray eclipse
Document Type
Journal Article
Author
Source
Sov. Astron. Lett. (Engl. Transl.); (United States); 12
Subject
Language
English
Abstract
In the summer and autumn of 1984, HZ Her (one of the stars in the Hercules X-1 binary system) was observed in the IR (J, H, and K bands) with the 125-cm AZT-11 telescope of the Crimean Astrophysical Observatory. The observations of the star disclosed a sharp IR peak at orbital phase phi = 0.91, shortly before an X-ray eclipse, reaching a power greater than about 10 to the 36th erg/s. Although several hypotheses are suggested to provide an interpretation of this phenomenon, none of the proposed mechanisms can fully explain the peculiarities in the object's light curves close to eclipse. 16 references.