The properties of dust ejecta from Comet Halley are studied on the basis of (a) evidence from the comet's past apparitions and (b) analogy with recent, physically similar comets. Specifically discussed are the light curve and spectrum, discrete phenomena in the head, the physical properties of the nucleus (size, albedo, rotation, surface temperature, and morphology), and an interaction between the nucleus and dust atmosphere. Also reviewed are constraints on the size and mass distributions of dust particles, information on submicron-size and submillimeter-size grains from the comet's dust tail and antitail, and the apparent existence of more than one particle type. Similarities between the jet patterns of Halley and the parent comet of the Perseid meteor stream are depicted, and effects of the surface heterogeneity (discrete active regions) on the dust flow are assessed. Current dust models for Halley are summarized and the existence of short-term variations in the dust content in the comet's atmosphere is suggested.


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    Titel :

    The Halley dust model


    Beteiligte:
    Sekanina, Z. (Autor:in)

    Erscheinungsdatum :

    1982-01-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    The Halley dust model

    Sekanina, Z. | Elsevier | 1983


    On the origin of P/Halley dust component

    Mukhin, L.M. / Grechinsky, A.D. / Ruzmaikina, T.V. | Elsevier | 1989




    A Halley subsidy model

    Engineering Index Backfile | 1925