Simulations of slow bars in anisotropic disk systems

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Abstract

The instability of anisotropic disk systems with elongated stellar orbits has been investigated. N-body generalized polytropic models of stellar disks have been constructed. They are shown to be unstable with respect to the bar formation at any degree of anisotropy. This result differs from the results of the studies of such models by other authors. The bar pattern speed and amplitude have been found. The initial distribution of precession rates and the adiabatic invariants of stellar orbits have been calculated. A bar is shown to be formed in such systems due to the radial orbit instability.
Original languageEnglish
Pages (from-to)61-74
Number of pages14
JournalAstronomy Letters
Volume43
DOIs
StatePublished - 2017

Keywords

    Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    @article{d1cdba2787e34fa4860f07216886dbf4,
    title = "Simulations of slow bars in anisotropic disk systems",
    abstract = "The instability of anisotropic disk systems with elongated stellar orbits has been investigated. N-body generalized polytropic models of stellar disks have been constructed. They are shown to be unstable with respect to the bar formation at any degree of anisotropy. This result differs from the results of the studies of such models by other authors. The bar pattern speed and amplitude have been found. The initial distribution of precession rates and the adiabatic invariants of stellar orbits have been calculated. A bar is shown to be formed in such systems due to the radial orbit instability.",
    keywords = "galaxies, instability, stellar dynamics, simulations",
    author = "Сотникова, {Наталья Яковлевна} and Смирнов, {Антон Александрович} and Кошкин, {А. А.}",
    year = "2017",
    doi = "10.1134/S1063773717020062",
    language = "English",
    volume = "43",
    pages = "61--74",
    journal = "Astronomy Letters",
    issn = "1063-7737",
    publisher = "МАИК {"}Наука/Интерпериодика{"}",

    }

    Simulations of slow bars in anisotropic disk systems. / Сотникова, Наталья Яковлевна; Смирнов, Антон Александрович; Кошкин, А. А.

    In: Astronomy Letters, Vol. 43, 2017, p. 61-74.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Simulations of slow bars in anisotropic disk systems

    AU - Сотникова, Наталья Яковлевна

    AU - Смирнов, Антон Александрович

    AU - Кошкин, А. А.

    PY - 2017

    Y1 - 2017

    N2 - The instability of anisotropic disk systems with elongated stellar orbits has been investigated. N-body generalized polytropic models of stellar disks have been constructed. They are shown to be unstable with respect to the bar formation at any degree of anisotropy. This result differs from the results of the studies of such models by other authors. The bar pattern speed and amplitude have been found. The initial distribution of precession rates and the adiabatic invariants of stellar orbits have been calculated. A bar is shown to be formed in such systems due to the radial orbit instability.

    AB - The instability of anisotropic disk systems with elongated stellar orbits has been investigated. N-body generalized polytropic models of stellar disks have been constructed. They are shown to be unstable with respect to the bar formation at any degree of anisotropy. This result differs from the results of the studies of such models by other authors. The bar pattern speed and amplitude have been found. The initial distribution of precession rates and the adiabatic invariants of stellar orbits have been calculated. A bar is shown to be formed in such systems due to the radial orbit instability.

    KW - galaxies, instability, stellar dynamics, simulations

    U2 - 10.1134/S1063773717020062

    DO - 10.1134/S1063773717020062

    M3 - Article

    VL - 43

    SP - 61

    EP - 74

    JO - Astronomy Letters

    JF - Astronomy Letters

    SN - 1063-7737

    ER -