Bibcode
DOI
Lazaro, C.; Martínez-País, I. G.; Arévalo, M. J.; Antonopoulou, E.
Bibliographical reference
Astronomical Journal v.113, p.1122
Advertised on:
3
1997
Citations
7
Refereed citations
7
Description
We present the first light curves in the infrared J, H, and K bands of
UX Her and analyze them together with published light curves in B and V
in order to determine the physical parameters of the system. Based on
the spectra of UX Her and standard stars in the region 8440-8870
Å, we classify the primary component of the binary as a type A2-3
V star. From the absolute radii of the stars that we derive from the
light-curve analysis, we find that none of the components of the binary
are filling their Roche lobes. Considering the contributions of the
secondary star to the total light given by the light-curve solutions,
and the measured B, V, J, H, and K magnitudes at maxima and during the
eclipses, we find good agreement with those predicted from stellar
atmosphere models for effective temperatures of the stellar components:
Teff,1≍9000 K and Teff.2˜4500 K, with
the system at a distance d≍280 pc.