UDK 52 Астрономия. Геодезия
UDK 53 Физика
UDK 520 Инструменты, приборы и методы астрономических наблюдений, измерений и анализа
UDK 521 Теоретическая астрономия. Небесная механика. Фундаментальная астрономия. Теория динамической и позиционной астрономии
UDK 523 Солнечная система
UDK 524 Звезды и звездные системы. Вселенная Солнце и Солнечная система
UDK 52-1 Метод изучения
UDK 52-6 Излучение и связанные с ним процессы
GRNTI 41.00 АСТРОНОМИЯ
GRNTI 29.35 Радиофизика. Физические основы электроники
GRNTI 29.31 Оптика
GRNTI 29.33 Лазерная физика
GRNTI 29.27 Физика плазмы
GRNTI 29.05 Физика элементарных частиц. Теория полей. Физика высоких энергий
OKSO 03.06.01 Физика и астрономия
OKSO 03.05.01 Астрономия
OKSO 03.04.03 Радиофизика
BBK 2 ЕСТЕСТВЕННЫЕ НАУКИ
BBK 223 Физика
TBK 614 Астрономия
TBK 6135 Оптика
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
Globular clusters (GCs) are the oldest (ages up to 13.6 Gyr), but not the most metal-poor ( -2.9<[Fe/H]<0 dex) objects in the Universe. Studying properties of their stellar populations and comparing them with the properties of structural components of galaxies and stellar streams is necessary to understand the processes of nucleosynthesis and galaxy formation. We analyse integrated-light (IL) spectra of extragalactic GCs in order to determine the properties of their horizontal branch stars, ages and chemical composition. For this purpose, we compare the observed and synthetic spectra of clusters calculated using stellar atmosphere models. In this paper, we address the questions: 1) what signatures of multiple stellar populations can be inferred from the analysis of IL low-resolution spectra of GCs; and 2) what the origin of GCs is and their multiple stellar populations. For the second question, we consider only two sources of multiple stellar populations: asymptotic giant branch and rapidly rotating massive stars, and briefly consider the problems in this scientific area.
galaxies: abundances; galaxies: star clusters: general
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