National Tsing Hua University Institutional Repository:A Massive Protobinary System in the Hot Core W3(H2O)
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 54367/62174 (87%)
造访人次 : 14544427      在线人数 : 82
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTHU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻
    National Tsing Hua University Institutional Repository > 理學院 > 天文研究所 > 會議論文  >  A Massive Protobinary System in the Hot Core W3(H2O)


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/53740


    题名: A Massive Protobinary System in the Hot Core W3(H2O)
    作者: Chen, Huei-Ru;Welch, William J.;Wilner, David J.;Sutton, Edmund C.
    教師: 陳惠茹
    日期: 2006
    關聯: Revealing the Molecular Universe: One Antenna is Never Enough - IN HONOR OF THE ACADEMIC RETIREMENT OF JACK WELCH,Book Series: ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES,Volume: 356 Pages: 270-274,Published: 2006
    关键词: H2O MASER SOURCE
    W3(OH)
    摘要: We used the BIMA array to observe the hot molecular core W3(E2O). Our continuum maps at wavelengths of 1.4mm and 2.8mm both achieve sub-aresecond angular resolutions and show a double-peaked morphology. The angular separation of the two sources is 1."19 corresponding to 2.43 x 10(3) AU at the source distance of 2.04 kpc. The flux densities of the two sources at lambda lambda 1.4nnn and 2.8mm have a spectral index of 3, translating to an opacity law of kappa(v) alpha v. The small spectral indices suggest that grain growth has begun in the hot core. We have also observed 5 of the K-components of the methyl cyanide (CH3CN) J = 12-11 transition. A radial velocity difference of 2.81 km s(-1) is found for the gas in the two continuum peaks. Interpreting these two sources as binary components in orbit about one another, we find a minimum mass of 22 M-circle dot for the system. Power-law density distributions close to the free-fall value, r(-1.5), are found for both components, suggesting continuing accretion. The derived luminosities suggest the two sources have equivalent zero-age main sequence (ZAMS) spectral type 130.5 - B0. A velocity gradient previously detected. may be explained by unresolved binary rotation with a small velocity difference.
    URI: http://adsabs.harvard.edu/abs/2006ASPC..356..270C
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/53740
    显示于类别:[天文研究所] 會議論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML691检视/开启


    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 ©   - 回馈