5 papers
Configuration of the Tau system constrained by multi-technique observations
M. Brož, P. Doležal, D. Vokrouhlický +8
Tau is one of the most compact multiple stellar systems, which is sufficiently close (67 pc) to be constrained by all kinds of observations. To better constrain its current co…
The Be star omicron Cas is indeed the primary of a triple system
Petr Harmanec, Stephenson Yang, Miroslav Slechta +3
Analysis of radial velocities of two narrow absorption components in the Mg II 4481 A line demonstrated that the secondary of the Be star omicron Cas is indeed a close binary syste…
Circini: A massive hierarchical triple system with an eclipsing binary
J. Å vrÄková, P. Harmanec, R. Klement +6
Circini is known to be a massive multiple system containing a 3.9 d inner eclipsing binary in a slightly elliptical orbit exhibiting slow apsidal motion and a distant tertiary…
Quadruple system HD 135160 in a unique 2+2 configuration
Michal Zummer, Petr Harmanec, Brad Barlow +2
Analysing a large body of observational data, we found that HD 135160 is a quadruple 2+2 system, composed of a massive ellipsoidal binary ('heartbeat' star) with components Aa and…
VLTI observations of the Orion Belt stars: I. eps Orionis
AlžbÄta OpliÅ¡tilová, Miroslav Brož, Christian A. Hummel +2
Massive stars play a decisive role in the evolution of the Universe. In order to constrain their current state and structure, we need sufficiently complex models, constrained by as…