Numerous population of binary Cepheids with giant companions
A bold hypothesis that outliers above the period-luminosity relation of Classical Cepheids are binaries brings a discovery of 16 new binary Cepheids with giant companions in the LMC.
Tagged: binary
Habilitation title for Darek Graczyk
Today we are celebrating with our colleague Darek Graczyk, who obtained the title of doctor habilitated!
Even more accurate benchmark for cosmic distances
An international team of astronomers within the Araucaria Project measured the distance to the Large Magellanic Cloud (LMC) with an exceptional accuracy of 1%.
LL Aqr – an eclipsing binary with a solar twin companion
We present analysis of eclipsing binary star LL Aqr which contains a solar twin component.
Peculiar W Vir type Cepheid mass determination
We present the results of a study of the type II Cepheid in the eclipsing binary system OGLE-LMC-T2CEP-098.
Occurrence of BEPs
Synthetic simulation of low-mass binary stars shows that 5% of them can cross the instability strip as Binary Evolution Pulsators (BEPs).
Mass determination for classical FU Cepheid
Precise mass determination for a classical Cepheid in the double-lined, highly eccentric eclipsing binary system OGLE-LMC562.05.9009.
First-overtone Cepheid mass determination
First determination of the mass and the projection factor for the first-overtone Cepheid OGLE-LMC-CEP-2532 in a binary system.
Binary system of two Cepheids
Binary system OGLE-LMC-CEP-1718 composed of two classical FO Cepheids confirmed spectroscopically and analized.
Distance to the LMC
LMC distance determined with the accuracy of 2% using binary systems composed of giants.