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    National Tsing Hua University Institutional Repository > 歷任校長 > 徐遐生 (2002-2006) > 期刊論文 >  ON DENSITY-WAVE THEORY OF GALACTIC SPIRALS .1. SPIRAL STRUCTURE AS A NORMAL MODE OF OSCILLATION


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/81039


    Title: ON DENSITY-WAVE THEORY OF GALACTIC SPIRALS .1. SPIRAL STRUCTURE AS A NORMAL MODE OF OSCILLATION
    Authors: SHU, F.H.
    教師: 徐遐生
    Date: 1970
    Publisher: American Astronomical Society
    Relation: ASTROPHYSICAL JOURNAL, American Astronomical Society, Volume 160, Issue 1, 1970, Pages 89-97
    Keywords: GALACTIC SPIRALS
    NORMAL MODE
    OSCILLATION
    Abstract: An exact formulation of the linearized problem, including appropriate boundary conditions, is developed to explore whether extensive galactic density waves of spiral form are permissible normal modes of oscillation for a stellar disk. An “anti-spiral theorem,” of the type reported previously by Lynden-Bell and Ostriker for neutral modes in a gaseous disk, holds here with limited validity─namely, whenever the effects of stellar resonances can be ignored.
    Relation Link: http://aas.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/81039
    Appears in Collections:[ 徐遐生 (2002-2006)] 期刊論文
    [物理系] 期刊論文

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