Spectroscopic orbit determination of two metal-weak dwarf stars: HD64491 and HD141851

Autor(en)

Grigor Boykov Nikolov, E. Atanasova, Ilian Kh. Iliev, Ernst Paunzen, Ina S. Barzova

Abstrakt

Based on high-resolution CCD spectra, radial velocity curves of HD64491 and HD141851 have been studied. Both stars are SB1 spectroscopic binaries with metal-weak characteristics. The PHOEBE code was used to derive the spectroscopic orbit solutions. The following parameters have been calculated for HD64491: Porb = 187.8 days, e = 0.5, a sin i = 0.39AU, q = m2/m1 &lid; 0.65. For the other star HD141851 we have obtained: Porb = 1073 days, e = 0.7, a sin i = 1.15AU, and q = m2/m1 &lid; 0.5.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

Sofia University "St. Kliment Ohridski", Bulgarian Academy of Sciences (BAS)

Journal

Contributions of the Astronomical Observatory Skalnaté Pleso

Seiten

433-434

Anzahl der Seiten

2

ISSN

1335-1842

Publikationsdatum

2008

ÖFOS 2012

1030 Physik, Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/dda45e04-08ab-465b-afd2-51e497825e33