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High-mass eclipsing binaries: a testbed for models of interior structure and evolution -- Accurate fundamental properties and surface chemical composition for V1034 Sco, GL Car, V573 Car and V346 Cen
K. Pavlovski, J. Southworth, A. Tkachenko +2
The surface chemical compositions of stars are affected by physical processes which bring the products of thermonuclear burning to the surface. Despite their potential in understan…
Physical properties and CNO abundances for high-mass stars in four main-sequence detached eclipsing binaries: V478 Cyg, AH Cep, V453 Cyg and V578 Mon
K. Pavlovski, J. Southworth, E. Tamajo
A prerequisite for probing theortical evolutionary models for high-mass stars is the determination of stellar physical properties with a high accuracy. We do this for three binary…
Asiago eclipsing binaries program. IV. SZ Camelopardalis, a beta Cephei pulsator in a quadruple, eclipsing system
E. Tamajo, U. Munari, A. Siviero +2
We present a spectroscopic and photometric analysis of the multiple system and early-type eclipsing binary SZ Cam (O9IV + B0.5V), which consists of an eclipsing SB2 pair of orbital…
Absolute dimensions of detached eclipsing binaries. II. The metallic-lined system XY Ceti
John Southworth, K. Pavlovski, E. Tamajo +3
We present phase-resolved spectroscopy and extensive survey photometry of the detached eclipsing binary system XY Cet, which is composed of two metallic-lined stars. We measure the…
Constrained fitting of disentangled binary spectra: application to V615 Per in the open cluster h Persei
E. Tamajo, K. Pavlovski, J. Southworth
Using the technique of spectral disentangling, it is possible to determine the individual spectra of the components of a multiple star system from composite spectra observed at a r…
Observational approach to the chemical evolution of high-mass binaries
K. Pavlovski, J. Southworth, E. Tamajo +1
The complexity of composite spectra of close binaries makes the study of the individual stellar spectra extremely difficult. For this reason there exists very little information on…
Chemical evolution of high-mass stars in close binaries. II. The evolved component of the eclipsing binary V380 Cygni
K. Pavlovski, E. Tamajo, P. Koubsky +3
The eclipsing and double-lined spectroscopic binary V380 Cyg is an extremely important probe of stellar evolution: its primary component is a high-mass star at the brink of leaving…