Naslov
An observational test of tidally induced mixing in a massive binary system
(An observational test of tidally induced mixing in a massive binary)

Autori
Pavlovski, Krešimir ; Hensberge, Herman

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
24th General Assembly IAU, Abstract Book / - Manchester : IAU, 2000, 162-162

Skup
JD5 Mixing and Diffusion in Stars: Theoretical prediction and Observational Constraints, 24th IAU General Assembly

Mjesto i datum
Manchester, Ujedinjeno Kraljevstvo, 07.08.2000. - 18.08.2000

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
mixing; abundances; binary stars

Sažetak
A detailed study of the double-lined eclisping binary V578 Mon belonging to the young open cluster NGC 2244 in the Rosette Nebula is undertaken. The physical properties and evolutionary status of the components are derived from the analysis of the new high-precision light curve and high-resolution echelle spectra secured at ESO. The individual spectra of both components are recovered by applying a novel Fourier disentangling technique. These spectra are then analyzed as if it were single star spectra, enabling to derive the temperature spectroscopically and to perform an abundance study for each component separately. The binary consists of two young early-B type stars well inside their critical Roche volume. They move in an eccentric orbit. The position of the primary in the HR diagram is fully consistent with the evolutionary tracks for single stars, but the secondary is slightly overluminous. Possible indications for strong internal mixing in the secondary, due to motions induced by the proximity of the primary, will be discussed in relation with the derived abundances.

Izvorni jezik
Hrvatski

Znanstvena područja
Fizika

POVEZANOST RADA