Naslov
The eclipsing binary HD 92024 : 'Getting the orbit'

Autori
Freyhammer, L.M. ; Hensberge, H. ; Sterken, C. ; Pavlovski, K. ; Smette, A. ; Ilijić, S.

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

Izvornik
Workshop on Spectroscopically and Spatially Resolving the Components of Close Binary Stars : Abstract Book / - , 2003, 17-17

Skup
International Workshop 'Spectroscopically and Spatially Resolving the Components of Close Binary Stars'

Mjesto i datum
Dubrovnik, Hrvatska, 20.10.2003. - 24.10.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
eclipsing binary star; spectroscopic binary; HD 92024

Sažetak
HD92024 is an SB1 eclipsing binary system with a Beta Cephei star as primary component. We report on the progress of a combined photometric and spectroscopic investigation of this binary, being the only known one of its type in the southern hemisphere. Pulsating components of spectroscopic binaries often introduce substantial line-profile variations in the spectra, which hampers the determination of orbital radial-velocity amplitudes and thus the stellar masses. Here, in order to minimise the bias from line-profile variations on the orbital RVs, we use selected matched-profile RV differences to derive the orbital paramterers. The method is compared to straightforward cross-correlations of the spectra with an average spectrum.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA