National Tsing Hua University Institutional Repository:Synthetic images and long-slit spectra of protostellar jets
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 54367/62174 (87%)
Visitors : 13689696      Online Users : 43
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTHU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    NTHUR > Presidents > Shu, Frank Hsia-San (2002-2006 ) > SFHS Journal / Magazine Articles >  Synthetic images and long-slit spectra of protostellar jets


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/80952


    Title: Synthetic images and long-slit spectra of protostellar jets
    Authors: Shang, H.;Shu, F.H.;Glassgold, A.E.
    Teacher: 徐遐生
    Date: 1998
    Publisher: American Astronomical Society
    Relation: ASTROPHYSICAL JOURNAL, American Astronomical Society, Volume 493, Issue 2, Part 2, FEB 1 1998, Pages L91-L94
    Keywords: line: profiles
    stars: pre-main sequence
    ISM: jets and outflows
    Abstract: We construct synthetic images and long-slit spectra of protostellar jets modeled as steady state X-winds. Assuming uniform ionization fractions and electron temperatures, we calculate non-LTE level populations for five-level atoms. Synthetic images in the [S II] lambda 6716/lambda 6731 and [O I] lambda 6300/lambda 6364 lines have roughly the same surface brightness as observed jets if we ignore their knotty structure. Long-slit spectra taken with the slit placed along the central axis of the jet, or slightly displaced laterally from it, provide strong evidence in support of the X-wind theory. In both the models and the actual objects, wide line profiles, containing both large positive and negative velocities, are often seen at the base of the flow, indicative of a wide angle wind. As one progresses up the length of the slit, the line profiles narrow to straddle the projected velocity of a highly collimated jet.
    Relation Link: http://aas.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/80952
    Appears in Collections:[Shu, Frank Hsia-San (2002-2006 )] SFHS Journal / Magazine Articles
    [Department of Physics] PHYS Journal / Magazine Articles

    Files in This Item:

    File SizeFormat
    48.pdf513KbAdobe PDF173View/Open


    在NTHUR中所有的資料項目都受到原著作權保護,僅提供學術研究及教育使用,敬請尊重著作權人之權益。若須利用於商業或營利,請先取得著作權人授權。
    若發現本網站收錄之內容有侵害著作權人權益之情事,請權利人通知本網站管理者(smluo@lib.nthu.edu.tw),管理者將立即採取移除該內容等補救措施。

    SFX Query

    與系統管理員聯絡

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback