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    National Tsing Hua University Institutional Repository > 理學院 > 天文研究所 > 會議論文  >  The persistence of warps in massive halos


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/53734


    Title: The persistence of warps in massive halos
    Authors: Jiang IG;Dutta S;Binney J
    教師: 江瑛貴
    Date: 1998
    Relation: GALACTIC HALOS: A UC SANTA CRUZ WORKSHOP,Book Series: ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES,Volume: 136,Pages: 379-381,Published: 1998
    Keywords: warps
    massive halos
    Abstract: We study the persistence of warps in galactic discs in the presence of massive halos. A disc is approximated by a set of massive rings, while a halo is represented by a conventional n-body simulation. We confirm the conclusion of Nelson & Tremaine (1995) that a halo responds strongly to an embedded precessing disc. This response invalidates the approximations made in the derivation of classical 'modified tilt' modes. We show that the response of the halo causes the line of nodes of a disc that starts from a modified tilt mode to wind up within a few dynamical times. This result can be explained in terms of the probable spectrum of true normal modes of a combined disc-halo system (Binney et al. 1998).
    URI: http://adsabs.harvard.edu/full/1998ASPC..136..382J
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/53734
    Appears in Collections:[天文研究所] 會議論文

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