The symposium was organized by the Astronomical Council of the Academy of Sciences of USSR, Commission on Physics of Stars and Nebulae and Byurakan Observatory. It was convened in honour of 60th anniversary of Academician V.A. Ambartsumian and devoted to the discussion of research in following three directions:

• radiation transfer theory
• physics of non-stable stars and nebulae
• physics of galaxies

Problems discussed at the symposium concerned those in which a great role belonged to V.A. Ambartsumian, i.e. the problem of light scattering, non-stable stars and active phenomena in galaxies.

Scientific Organizing Committee (SOC):

Local Organizing Committee (LOC):

About 100 scientists took part in the symposium – representatives of various observatories of the Soviet Union (such as V.V. Sobolev, I.S. Shklovsky, S.B. Pikelner, V.G. Gorbatsky, A.B. Severny, and V.A. Dombrovsky), as well as Poland and DDR.

Byurakan Observatory research workers took an active part in the symposium. They had 11 talks (V.A. Ambartsumian, R.A. Vardanian, E.S. Kazarian, A.T. Kalloghlian, L.V. Mirzoyan, A.G. Nikoghossian, V.S. Oskanian, V.Yu. Terebizh, H.M. Tovmassian, E.Ye. Khachikian, and H.S. Chavushian). Altogether 42 talks were presented.

V.A. Ambartsumian had a report on statistics of flare stars, where showed for the first time that a large amount of dwarf stars in the aggregates are flare ones.

Proceedings: Stars, Nebulae, Galaxies, Proceedings of a Symposium held in Byurakan on September 16-19, 1968, Eds. V.V. Sobolev, Academy of Sciences of Armenian SSR, Yerevan 1969, 296 p. (in Russian).

Full List of Participants

Aivazian G.M., ?Byurakan Astrophysical Observatory (BAO), USSR
Ambartsumian V.A., Byurakan Astrophysical Observatory (BAO), USSR
Azimov S.M., Shemakha Astrophysical Observatory, Azerbaijan, USSR
Boyarchuk A.A., Crimean Astrophysical Observatory (CrAO), USSR
Chavushian H.S., Byurakan Astrophysical Observatory (BAO), USSR
?Chubarian E.V., Byurakan Astrophysical Observatory (BAO), USSR
?Chuvaev K.K., Crimean Astrophysical Observatory (CrAO), USSR
Dibay E.A., Crimean Station, GAISh, Moscow, USSR
Dombrovsky V.A., Astronomical Observatory, Leningrad State University (LSU), USSR
Gershberg R.E., Crimean Astrophysical Observatory (CrAO), USSR
Glushkov Yu.I., Astrophysical Institute, Acad. Sci., Kazakhstan, USSR
Gorbatsky V.G., Leningrad State University (LSU), USSR
Gurzadyan G.A., Byurakan Astrophysical Observatory (BAO), USSR
Hagen-Thorn V.A., Leningrad State University (LSU), USSR
Ismailov Z.A., Shemakha Astrophysical Observatory, Azerbaijan, USSR
Ivanov V.V., Leningrad State University (LSU), USSR
Kalloghlian A.T., Byurakan Astrophysical Observatory (BAO), USSR
?Kaplan S.A., Radiophysical Research Institute, Gorki University, USSR
Kazarian E.S., Byurakan Astrophysical Observatory (BAO), USSR
Khachikian E.Ye., Byurakan Astrophysical Observatory (BAO), USSR
Kipper A.Ja., Institute of Physics and Astronomy, Acad. Sci., Estonia, USSR
Klimishin I.A., Astronomical Observatory, Lvov State University, Ukraine, USSR
Kolesnik I.G., USSR
Komberg B.V., USSR
Masevich A.G., Astronomical Council, Moscow, USSR
Melnikov O.A., Principal Astronomical Observatory, Pulkovo, USSR
Minin I.N., Leningrad State University (LSU), USSR
Mirzoyan L.V., Byurakan Astrophysical Observatory (BAO), USSR
Mustel E.R., USSR
Nagirner D.I., Leningrad State University (LSU), USSR
Nikoghossian A.G., Byurakan Astrophysical Observatory (BAO), USSR
Oskanian V.S., Byurakan Astrophysical Observatory (BAO), USSR
Ozernoy L.M., USSR
?Papoyan V.V., Byurakan Astrophysical Observatory (BAO), USSR
Parsamian E.S., Byurakan Astrophysical Observatory (BAO), USSR
Pikelner S.B., Sternberg State Astronomical Institute (GAISh), Moscow, USSR
Piotrowski S.Z., University Observatory, Warsaw, Poland
Pronik I.I., Crimean Astrophysical Observatory (CrAO), USSR
Pronik V.I., Crimean Astrophysical Observatory (CrAO), USSR
Rozhkovski D.A., Astrophysical Institute, Acad. Sci., Kazakhstan, USSR
Sabashvili Sh.A., Abastumani Astrophysical Observatory, Georgia, USSR
Sedrakian D.M., Byurakan Astrophysical Observatory (BAO), USSR
Severny A.B., Crimean Astrophysical Observatory (CrAO), USSR
Shklovsky I.S., Sternberg State Astronomical Institute (GAISh), Moscow, USSR
Sobolev V.V., Leningrad State University (LSU), USSR
Terebizh V.Yu., Byurakan Astrophysical Observatory (BAO), USSR
Tovmassian H.M., Byurakan Astrophysical Observatory (BAO), USSR
?Tsytovich V.N., Physical Institute after P.N. Lebedev, Acad. Sci., USSR
Vardanian R.A., Byurakan Astrophysical Observatory (BAO), USSR
Yanovitski E.G., Principal Astronomical Observatory, Acad. Sci., Ukraine, USSR
Yengibarian N.B., Institute of Mathematics and Mechanics, Acad. Sci., Yerevan, Armenia, USSR
…….