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    National Tsing Hua University Institutional Repository > 理學院 > 天文研究所 > 期刊論文 >  Heated gaseous streamers and star formation in the Orion molecular cloud

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/53961

    Title: Heated gaseous streamers and star formation in the Orion molecular cloud
    Authors: Wiseman JJ;Ho PTP
    教師: 賀曾樸
    Date: 1996
    Publisher: Nature Publishing Group
    Relation: NATURE,Volume: 382,Issue: 6587,Pages: 139-141,Published: JUL 11 1996
    Abstract: THE Orion molecular cloud, which is obscured by the dust and ionized gas of the Orion nebula, is the nearest example of a giant molecular cloud, Massive stars are actively forming deep in the core of this cloud as a result of large-scale cloud instabilities, fragmentation and gravitational collapse, These young stars will inject a considerable amount of energy back into the surrounding environment through stellar winds and radiation(1), and they are thus expected to exert a major influence on the evolution of the cloud, Here we present a mosaic of ten high-resolution radio maps of the region of the cloud known as OMC-1; the maps were constructed from observations of two ammonia emission lines, which trace the densest regions of the gas while mitigating the obscuring effects of the dust, We find dense filaments of molecular gas with complex motions fanning out more than 0.5 parsec from the central core of the cloud, These filaments appear as long, bead-like chains, consisting of dense clumps of gas that may be the sites of future star formation, The outer sheaths of clumps and the edges of filaments may be heated as a direct result of radiation and outflows from young stars embedded in the central core.
    URI: http://www.nature.com/npg_/index_npg.html
    Appears in Collections:[天文研究所] 期刊論文

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