Marsakov Vladimir Andreevich General data:
Born: 09.05.1947
Place of birth: Zaporozhye city, Zaporozhye region, Ukrainian SSR
Studied in: Rostov State University (since 2006, the Pedagogical Institute of the Federal State Technical University of the South Russian Federal University, Rostov-on-Don city) (1970);
Key interests: astrophysics, Galaxy structure. ScD Thesis: The structure and evolution of the subsystems of the Galaxy (2007 Special Astrophysical Observatory of the Russian Academy of Sciences);
Biography:
He was born on May 9, 1947 in the Zaporozhye city of Zaporozhye region of the Ukrainian SSR.
In 1970 he graduated from Rostov State University.
Since 1972, after serving in the army, he has been working at the Research Institute of Physics
Rostov State University. In start he worked as a junior researcher, then as a researcher, and since 2006 as a senior researcher.
Since 2003 he worked part-time as an associate professor, and since 2008-2015 as a professor at the Faculty of Physics of the Southern Federal University in Rostov-on-Don city.
In 2007 he defended at the Special Astrophysical Observatory of the Russian Academy of Sciences his doctoral dissertation in the specialty "astrophysics and radio astronomy" on the topic "Structure and evolution of subsystems of the Galaxy".
In 2010 he was awarded the title of professor.
Field of activity: a comprehensive statistical study of the chemical and spatial-kinematic properties of stellar populations in order to restore the history of star formation and the formation of subsystems in the Galaxy. He is the author of more than a hundred scientific papers, monographs and co-author with A. V. Loktin textbook on stellar astronomy.
In the 1970s, in collaboration with A. A. Suchkov, he proposed a model of active phases in the evolution of the Galaxy, which explains the formation of its multicomponent structure and the distribution of heavy elements in the stars of its various subsystems. They were the first to find evidence of a subsystem in the Galaxy, later called the "thick disk".
In the 1980s and 1990s, he showed that, contrary to popular belief in the galaxy's thin disk at the time, the connection between metallicity and age is ambiguous, and there is a real variance in chemical composition among stars of the same age. In addition, the content of heavy elements in the stars of the thin disk began to increase sharply 4-5 billion years ago, while previously the enrichment of the interstellar medium occurred only at the stage of formation halo and thick disk of the Galaxy, ie more than 10-12 billion years ago.
Since the 2000s, he has been studying the history of star formation in the Galaxy based on data on the content of chemical elements produced in various processes of nuclear fusion in stellar objects of various subsystems of the Galaxy. He found evidence that a significant number of non-metallic objects now belonging to our Galaxy were formed outside it and that the properties of stellar populations of both disk and spherical subsystems of the Galaxy are largely due to the influence of close satellite galaxies that lose under its influence tidal forces interstellar matter, individual stars and globular clusters. He found evidence that some of the scattered clusters in the Galaxy formed as a result of high-velocity clouds interacting with interstellar thin disk matter and resulted in abnormally low metallic disk fields and/or galactic orbits characteristic of older Galaxy subsystems.
In different years he created and taught at the Strasbourg Center for Star Data.
ten unique consolidated catalogs of the contents of several chemical elements, fundamental astrophysical parameters and elements of galactic orbits for stellar objects in the Galaxy.
Five candidate dissertations were defended under his scientific supervision.
Main publications:
1. В. А. Марсаков, М. Л. Гожа, “Природа рассеянных звездных скоплений в Галактике”, Вестн. Удмуртск. ун-та. Матем. Мех. Компьют. науки, 2013, 2, 92–106
2. М. Л. Гожа, В. А. Марсаков, “Пространственное распределение металличности в окрестностях солнца по данным о молодых рассеянных скоплениях и цефеидах поля”, Вестн. Удмуртск. ун-та. Матем. Мех. Компьют. науки, 2013, 1, 99–108
3. Особенности содержаний некоторых химических элементов в богатых металлами переменных звездах типа RR Лиры поля/Гожа М. Л., Марсаков В. А., Коваль В. В.//Современная звездная астрономия – 2019, 14 с
4. М. Л. Гожа, В. А. Марсаков, “Пространственное распределение металличности в окрестностях солнца по данным о молодых рассеянных скоплениях и цефеидах поля”, Вестн. Удмуртск. ун-та. Матем. Мех. Компьют. науки, 2013, 1, 99–108
Sources:
1 Астрономы России 1917-2017/ науч. ред. А.М.Черепащук, Казань, Казан. фед. ун-т, 2017.- 568с- C. 297
