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Title:
Observational studies of early-type binary stars: VV Orionis
Authors:
Terrell, Dirk; Munari, Ulisse; Siviero, Alessandro
Affiliation:
AA(Department of Space Studies, Southwest Research Institute, 1050 Walnut St., Suite 400, Boulder, CO 80302, USA), AB(Osservatorio Astronomico di Padova, Sede di Asiago, I-36032 Asiago (VI), Italy), AC(Osservatorio Astronomico di Padova, Sede di Asiago, I-36032 Asiago (VI), Italy)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 374, Issue 2, pp. 530-534. (MNRAS Homepage)
Publication Date:
01/2007
Origin:
MNRAS
MNRAS Keywords:
binaries: eclipsing , binaries: spectroscopic
Abstract Copyright:
(c) 2006 The Authors. Journal compilation © 2006 RAS
DOI:
10.1111/j.1365-2966.2006.11162.x
Bibliographic Code:
2007MNRAS.374..530T

Abstract

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 M1 = 10.9 +/- 0.1Msolar and a radius R1 = 4.98 +/- 0.02Rsolar and a B4.5 V secondary with a mass M2 = 4.09 +/- 0.05Msolar and a radius R2 = 2.41 +/- 0.01Rsolar.
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