Sunset over the Atacama Desert
Before we start an observing night, twice a year we get to see this gem: a marvelous sunset captured from Observatory Cerro Murphy of the setting Sun, that illuminates four Unit Telescopes of Very...
Author: araucaria_admin
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.
Araucaria Meeting 2017, Kraków, Poland
The Araucaria Meeting took place at the end of September 2017 in Crocow, Poland, and was attended by 23 people from 11 scientific institutions in six countries.
New member of the Araucaria Project
We are delighted to present to you our new member Zbigniew Kołaczkowski.
Araucaria Project on YouTube
Araucaria is on YouTube! And we start with this amazing timelapse from Cerro Tololo Observatory. Available in English and in Polish. Enjoy!
Grzegorz Pietrzyński wins ERC grant
Professor Grzegorz Pietrzyński has received European Research Council Advanced grant of 2.4 million Euro for “A sub-percent distance scale from binaries and Cepheids” project.
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).
Speaking about measuring distances
If you understand Polish language, we have a treat for you. Araucaria starred in an episode of Astronarium series, the one about measuring distances in our Universe.
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.