Open AccessObservational studies of early‐type binary stars: VV Orionis
Author(s) -
Terrell Dirk,
Munari Ulisse,
Siviero Alessandro
Publication year - 2007
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2006.11162.x
Subject(s) - physics , astrophysics , radius , binary number , light curve , stars , radial velocity , binary star , astronomy , spectral line , computer security , arithmetic , mathematics , computer science
New and previously published observations of the bright eclipsing binary VV Orionis are analyzed. We present new radial velocities and interstellar reddening measurements from high‐resolution spectra of this detached, short‐period ( P = 1.48 d) binary. We discuss the validity of prior claims for the existence of a third body and show that our new velocities and light‐curve solution cast doubt on them. The components of VV Ori are shown to be a B1 V primary with a mass M 1 = 10.9 ± 0.1 M ⊙ and a radius R 1 = 4.98 ± 0.02 R ⊙ and a B4.5 V secondary with a mass M 2 = 4.09 ± 0.05 M ⊙ and a radius R 2 = 2.41 ± 0.01 R ⊙ .