КФУ. Карточка публикации. The determination of white dwarf parameters in dwarf novae by optical spectral modeling

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THE DETERMINATION OF WHITE DWARF PARAMETERS IN DWARF NOVAE BY OPTICAL SPECTRAL MODELING

Форма представления

Статьи в зарубежных журналах и сборниках

Год публикации

2021

Язык

английский

Авторы, сотрудники КФУ

Шиманский Владислав Владимирович, автор

Библиографическое описание на языке оригинала

Dudnik A.A, Mitrofanova A.A, Shimansky V.V, The determination of white dwarf parameters in dwarf novae by optical spectral modeling//Research in Astronomy and Astrophysics. - 2021. - Vol.21, Is.7. - Art. №158.

Аннотация

This paper presents the results of a model analysis of optical spectra and determination of theree individual SU UMa and WZ Sge type dwarf novae. The moderate resolution spectra of TY Psc, FL Psc and V455 And were obtained at the 6-m BTA of the SAO RAS in the low state of these systems with the determination of white dwarf radiation. The theoretical spectra were calculated using the grid models of hydrogen dwarf atmospheres of white dwarfs by varying the parameters (Teff and log g) to reach the best agreement with the observed ones. We highlight different effects of the parameters on the shape and intensity of the HI lines. Therefore, it is possible to unambiguously determine Teff and log g from the analysis of observations. The fundamental parameters of white dwarfs ( and ) were found by comparing the parameters of atmospheres with theoretical models of the internal structure. The obtained parameters of the primaries of TY Psc, FL Psc and V455 And are consistent with the average values for SU UMa and WZ Sge systems. As a result, we demonstrate the efficiency of the method for determining the parameters of such systems based on the analysis of a limited set of observed optical spectra.

Ключевые слова

techniques: spectroscopic, stars:variables: dwarf novae, stars: individual: TY Psc, stars: individual: FL Psc, stars: individual: V455 And

Название журнала

RESEARCH IN ASTRONOMY AND ASTROPHYSICS

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114997419&doi=10.1088%2f1674-4527%2f21%2f7%2f158&partnerID=40&md5=f80ff1cd6c4d183dccc924b6d9265ae8

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https://repository.kpfu.ru/?p_id=257060

Полная запись метаданных

Поле DC	Значение	Язык
dc.contributor.author	Шиманский Владислав Владимирович	ru_RU
dc.date.accessioned	2021-01-01T00:00:00Z	ru_RU
dc.date.available	2021-01-01T00:00:00Z	ru_RU
dc.date.issued	2021	ru_RU
dc.identifier.citation	Dudnik A.A, Mitrofanova A.A, Shimansky V.V, The determination of white dwarf parameters in dwarf novae by optical spectral modeling//Research in Astronomy and Astrophysics. - 2021. - Vol.21, Is.7. - Art. №158.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/?p_id=257060	ru_RU
dc.description.abstract	RESEARCH IN ASTRONOMY AND ASTROPHYSICS	ru_RU
dc.description.abstract	This paper presents the results of a model analysis of optical spectra and determination of theree individual SU UMa and WZ Sge type dwarf novae. The moderate resolution spectra of TY Psc, FL Psc and V455 And were obtained at the 6-m BTA of the SAO RAS in the low state of these systems with the determination of white dwarf radiation. The theoretical spectra were calculated using the grid models of hydrogen dwarf atmospheres of white dwarfs by varying the parameters (Teff and log g) to reach the best agreement with the observed ones. We highlight different effects of the parameters on the shape and intensity of the HI lines. Therefore, it is possible to unambiguously determine Teff and log g from the analysis of observations. The fundamental parameters of white dwarfs ( and ) were found by comparing the parameters of atmospheres with theoretical models of the internal structure. The obtained parameters of the primaries of TY Psc, FL Psc and V455 And are consistent with the average values for SU UMa and WZ Sge systems. As a result, we demonstrate the efficiency of the method for determining the parameters of such systems based on the analysis of a limited set of observed optical spectra.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	techniques: spectroscopic	ru_RU
dc.subject	stars:variables: dwarf novae	ru_RU
dc.subject	stars: individual: TY Psc	ru_RU
dc.subject	stars: individual: FL Psc	ru_RU
dc.subject	stars: individual: V455 And	ru_RU
dc.title	The determination of white dwarf parameters in dwarf novae by optical spectral modeling	ru_RU
dc.type	Статьи в зарубежных журналах и сборниках	ru_RU