KFU. Card publication. Modeling and analysis of medium-resolution integrated-light spectra of globular clusters in dwarf galaxies

KAZAN
FEDERAL UNIVERSITY

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MODELING AND ANALYSIS OF MEDIUM-RESOLUTION INTEGRATED-LIGHT SPECTRA OF GLOBULAR CLUSTERS IN DWARF GALAXIES

Form of presentation

Articles in international journals and collections

Year of publication

2020

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Authors, employees of KFU

Shimanskiy Vladislav Vladimirovich, author

Bibliographic description in the original language

Sharina M.E.Modeling and analysis of medium-resolution integrated-light spectra of globular clusters in dwarf galaxies / M.E. Sharina, V.V. Shimansky // Proc. of the International Astronomical Union. - 2020. - V.351. - P.165-169.

Annotation

The study of ages, helium mass fraction (Y) and chemical composition of globular clusters in dwarf galaxies is important for understanding the physical conditions at the main evolutionary stages of the host galaxies and for constraining the build-up histories of large galaxies. We present the analysis of integrated-light spectra of 8 extragalactic and 20 Galactic globular clusters (GCs) using our population synthesis method. We calculate synthetic spectra of GCs according to the defined stellar mass functions using model atmospheres and stellar parameters ([Fe/H], Teff, and logg) set by theoretical isochrones. The main advantage of our method is the ability to determine not only chemical composition but also the age and mean Y in a cluster by modelling and analysis of Balmer absorption lines. The knowledge of Y and anomalies of light elements in star clusters is one of the key points for understanding the phenomenon of multiple stellar populations.

Keywords

galaxies: individual (M31; M33; NGC147; KKs3; ESO269-66); galaxies: star clusters: individual (CBF98; CBF28; MayallII; MGC1; Bol298; GC1; ESO269-66; SD09; GC7); galaxies: abundances;

The name of the journal

Proceedings of the International Astronomical Union

URL

https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=234852&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Shimanskiy Vladislav Vladimirovich	ru_RU
dc.date.accessioned	2020-01-01T00:00:00Z	ru_RU
dc.date.available	2020-01-01T00:00:00Z	ru_RU
dc.date.issued	2020	ru_RU
dc.identifier.citation	Sharina M.E.Modeling and analysis of medium-resolution integrated-light spectra of globular clusters in dwarf galaxies / M.E. Sharina, V.V. Shimansky // Proc. of the International Astronomical Union. - 2020. - V.351. - P.165-169.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=234852&p_lang=2	ru_RU
dc.description.abstract	Proceedings of the International Astronomical Union	ru_RU
dc.description.abstract	The study of ages, helium mass fraction (Y) and chemical composition of globular clusters in dwarf galaxies is important for understanding the physical conditions at the main evolutionary stages of the host galaxies and for constraining the build-up histories of large galaxies. We present the analysis of integrated-light spectra of 8 extragalactic and 20 Galactic globular clusters (GCs) using our population synthesis method. We calculate synthetic spectra of GCs according to the defined stellar mass functions using model atmospheres and stellar parameters ([Fe/H], Teff, and logg) set by theoretical isochrones. The main advantage of our method is the ability to determine not only chemical composition but also the age and mean Y in a cluster by modelling and analysis of Balmer absorption lines. The knowledge of Y and anomalies of light elements in star clusters is one of the key points for understanding the phenomenon of multiple stellar populations.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	Modeling and analysis of medium-resolution integrated-light spectra of globular clusters in dwarf galaxies	ru_RU
dc.type	Articles in international journals and collections	ru_RU