4 papers
Refined reduction and standardisation of 53 years of UBV photometry at Hvar
Hrvoje BožiÄ, Hrvoje Božić, BožiÄ Hrvoje +48
Emission-line stars classified as Be exhibit light and colour variability on various timescales, ranging from days to decades. Their evolution must be constrained by long-term obse…
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…
PLATOSpec: a precise spectrograph in support of space missions
P. Kabáth, M. Skarka, A. Hatzes +42
The upcoming space missions that will characterize exoplanets, such as PLATO and Ariel, will collect huge amounts of data that will need to be complemented with ground-based observ…
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…