Numerical studies of instability of generalized polytropic models of stellar disks

Результат исследований: Научные публикации в периодических изданияхстатья в журнале по материалам конференции

Выдержка

The distribution function for generalized polytropic models has been used to construct a series of numerical models of anisotropic disks. It has been shown with the help of simulation that such systems are unstable with respect to bar formation at any degree of radial elongation of star orbits. The result is completely at variance with the conclusions of earlier works, where similar models were studied. The pattern speeds and amplitudes of the forming bar were found, and the initial distributions of orbit precession rates were calculated. Such systems have been shown to fulfill all conditions for the onset of radial orbit instability, responsible for the formation of a slow bar.

Язык оригиналаанглийский
Номер статьи012009
Число страниц7
ЖурналJournal of Physics: Conference Series
Том929
Номер выпуска1
DOI
СостояниеОпубликовано - 27 ноя 2017
СобытиеInternational Conference PhysicA.SPb 2016 - Saint-Petersburg, Российская Федерация
Продолжительность: 1 ноя 20163 ноя 2016

Отпечаток

orbits
precession
elongation
distribution functions
stars
simulation

Предметные области Scopus

  • Физика и астрономия (все)

Цитировать

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abstract = "The distribution function for generalized polytropic models has been used to construct a series of numerical models of anisotropic disks. It has been shown with the help of simulation that such systems are unstable with respect to bar formation at any degree of radial elongation of star orbits. The result is completely at variance with the conclusions of earlier works, where similar models were studied. The pattern speeds and amplitudes of the forming bar were found, and the initial distributions of orbit precession rates were calculated. Such systems have been shown to fulfill all conditions for the onset of radial orbit instability, responsible for the formation of a slow bar.",
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Numerical studies of instability of generalized polytropic models of stellar disks. / Sotnikova, N. Ya; Смирнов, Антон Александрович.

В: Journal of Physics: Conference Series, Том 929, № 1, 012009, 27.11.2017.

Результат исследований: Научные публикации в периодических изданияхстатья в журнале по материалам конференции

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AB - The distribution function for generalized polytropic models has been used to construct a series of numerical models of anisotropic disks. It has been shown with the help of simulation that such systems are unstable with respect to bar formation at any degree of radial elongation of star orbits. The result is completely at variance with the conclusions of earlier works, where similar models were studied. The pattern speeds and amplitudes of the forming bar were found, and the initial distributions of orbit precession rates were calculated. Such systems have been shown to fulfill all conditions for the onset of radial orbit instability, responsible for the formation of a slow bar.

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