Proceedings Of The XI Bulgarian-Serbian Astronomical Conference.pdf

The XI Bulgarian-Serbian Astronomical Conference was held in Belogradchik, Bulgaria, from May 14-18, 2018. It was organized by the Institute of Astronomy and National Astronomical Observatory, Bulgaria, and the Astronomical Observatory Belgrade, Serbia, under the auspices of the Bulgarian Academy of Sciences and the Ministry of Education, Science and Technological Development of Serbia. The conference proceedings were published by the Astronomical Society “Rudjer Bošković” and financially supported by the Serbian ministry.

Key aspects of the conference include:

- Invited Lectures:
- Rumen Bachev presented on "Blazar Optical Variability: 20 Years of Observations at Belogradchik Observatory."
- Goran Damljanović discussed "First Gaia Data Release – DR1 and Serbian-Bulgarian Astronomical Activities."
- Daniela Kirilova spoke about "BBN Cosmological Constraints on Physics Beyond the Standard Model."

- Contributed Papers:
- Aleksandra Bajić and Milan S. Dimitrijević presented "Felix Romuliana – An Archaeoastronomical Research."
- Ana Borisova et al. shared "Doppler Imaging of the Hertzsprung Gap Star OU Andromedae."
- Zorica Cvetković et al. presented "New Linear Solutions for 13 Double Stars."
- Tsvetan B. Georgiev discussed "The Broken Titius-Bode Law for the Solar Planets and for the Satellite Systems of the Jovian Planets."
- Svitlana Kashuba et al. presented "The Current State of the Odessa Collection of Astrophotonegatives."
- Nikolay Kirov and Milcho Tsvetkov shared "New Capabilities of the Software to Support Digitization of Astronomical Photographic Plates."

The conference was organized by a scientific committee and a local organizing committee, with Momchil Dechev serving as the chairman of the latter. The proceedings were produced by Skripta Internacional and published in 100 copies.