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2005 Fiscal Year Final Research Report Summary

Line survey observation of circumstellar envelope of late type stars

Research Project

Project/Area Number 16540214
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionNagoya University

Principal Investigator

HIRAHARA Yasuhiro  Nagoya University, Graduate School of Environmental Studies, Associate Professor, 大学院・環境学研究科, 助教授 (30252224)

Co-Investigator(Kenkyū-buntansha) KAWAGUCHI Kentarou  Okayama University, Faculty of Schience, Professor, 理学部, 教授 (40158861)
Project Period (FY) 2004 – 2005
KeywordsInterstellar molecules / Vibration-Rotation Spectra / Circumstellar envelope of late type stars / Echelle Spectrograph / Immersion Grating / High-dispersion Spectroscopy
Research Abstract

We have developed the "mid-infrared high dispersion spectrograph" (IRHS), a cryogenic echelle spectrometer designed for Nasmyth focus stage of NAOJ Subaru 8.2m telescope, which operate at 8-13μm in wavelength with the resolving power λ/Δλ of 〜44,000 at 10μm. In order to achieve high dispersion, broad bandwidth and high sensitivity, two key devices are employed : a single crystal germanium immersion echelle grating (30 x 30 x 72mm) and a Si:As IBC (Impurity band conductor) array detector (412 x 512 pixels, unit pixel size 30μm) operated at 5K. The germanium immersion echelle grating for collimated beam size of 28mmφ was fabricated by utilizing ultra precision micro-grinding method coupled with "ELectrolytic In-process Dressing" (ELID) technique. To reduce thermal radiation of the instrument, all optics of IRHS is arranged on the cold optical base plate (〜30K) of the cryostat with the diameter of 80cm. The simple optical design will enable rapid wavelength scan in 8-13μm region, and will be most powerful equipment for the detailed astronomical search of new interstellar molecular spectra.
In April 2005, we carried out the first light observation of IRHS at MITAKA 1.5m telescope of NAOJ, Tokyo. By conducting the long-term continues observations (〜1 month) of 19 infrared bright objects, the performance of slit viewer optics was evaluated. As a result of the evaluations, the limited magnitude and the efficiency were estimated to be 7.1mag. (1.0 sec, S/N=10, Seeing:1.0 arcsec) and 50% respectively.

  • Research Products

    (10 results)

All 2005 2004

All Journal Article (10 results)

  • [Journal Article] Search for CCH^-, NCO~-, and NCS^- negative ions in molecular clouds2005

    • Author(s)
      Y.Morisawa, K.Kawaguchi, et al.
    • Journal Title

      Publ. Astron. Soc. Japan 57(2)

      Pages: 325-334

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] High angular resolution obserbations of the (J,K)=(1,1),(2,2), and (3,3) transitions of ammonis in NGC 2532005

    • Author(s)
      S.Takano, K.Kawaguchi, et al.
    • Journal Title

      Publ. Astron. Soc. Japan 57(4)

      Pages: 549-561

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Search for C_2^- in Diffuse Clouds2005

    • Author(s)
      Y.Hosaki, K.Kawaguchi, et al.
    • Journal Title

      Publ. Astron. Soc. Japan 57(4)

      Pages: 605-609

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Search for CCH^-, NCO^-, and NCS^- negative ions in molecular clouds2005

    • Author(s)
      Y.Morisawa, H.Hoshina, Y.Kato, Z.Simizu, S.Kuma, N.Sogoshi, M.Fushitani, S.Watanabe, Y.Miyamoto, T.Momose, Y.Kasai, K.Kawaguchi
    • Journal Title

      Publ.Astron.Soc.Japan 57

      Pages: 325-334

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] High angular resolution observations of the (J,K)=(1,1), (2,2), and (3,3) transitions of ammonia in NGC 2532005

    • Author(s)
      Takano, P.Hofner, G.Winnewisser, N.Nakai, K.Kawaguchi
    • Journal Title

      Publ.Astron.Soc.Japan 57

      Pages: 549-561

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Search for C_2^- in Diffuse Clouds2005

    • Author(s)
      S.Civis, Y.Hosaki, E.Kagi, H.Izumiura, K.Yanagisawa, T.Sedivcova, K.Kawaguchi
    • Journal Title

      Publ.Astron.Soc.Japan 57

      Pages: 605-609

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 中間赤外線高分散エシェル分光観測装置2004

    • Author(s)
      平原 靖大
    • Journal Title

      砥粒加工学会誌 48(4)

      Pages: 182-185

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Observations of cyclopropenylidene (cyclic-C_3H_2) in the external galaxies NGC 253 and M 82,2004

    • Author(s)
      T.Oike, K.Kawaguchi, et al.
    • Journal Title

      Publ. Astron. Soc. Japan 56(3)

      Pages: 431-438

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Mid-Infrared high-dispersion echelle spectrograph2004

    • Author(s)
      Y.Hirahara
    • Journal Title

      Publ.Japan Soc.of Abrasive Technology 48(4)

      Pages: 182-185

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Observations of cyclopropenylidene (cyclic-C_3H_2) in the external galaxies NGC 253 and M 822004

    • Author(s)
      T.Oike, K.Kawaguchi, S.Takano, N.Nakai
    • Journal Title

      Publ.Astron.Soc.Japan 56

      Pages: 431-438

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2007-12-13  

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