3 papers
astro-ph.SR2025
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…
astro-ph.SR2025
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…
astro-ph.SR2025
Spectroscopic orbit and variability of the Be star V1624 Cyg = 28 Cyg
P. Harmanec, S. Yang, P. Koubský +8
In recent years the idea, first formulated many decades ago, that the Be phenomenon could be causally related to the duplicity of Be stars, has been repeatedly reconsidered from va…