Naslov
The eclipsing binary HD 92024: getting the orbit

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

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Spectroscopically and Spatially Resolving the Components of the Close Binary Stars / Hilditch, R. W. ; Hensberge, H. ; Pavlovski, K. - San Francisco (CA) : Astronomical Society of the Pacific (ASP), 2004, 334-337

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

Mjesto i datum
Dubrovnik, Hrvatska, 20.10.2003. - 24.10.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
close binary stars; Beta Cephei pulsations; eclipsing binary

Sažetak
HD 92024 (=V381 Car) 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 one of its kind known in the southern hemisphere. Pulsating components of spectroscopic binaries often introduce substantial line-profile variations in the spectra that hamper the determination of orbital radial-velocity amplitudes, and thus also of 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 parameters. The method is compared to straightforward cross-correlation with an averaged spectrum.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA