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Distribution of the 3.3 micrometer Emission Band in the Galaxy

Research Project

Project/Area Number 09440090
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

NAGATA Tetsuya  Nagoya University, Department of Physics, Assoc.Professor, 大学院・理学研究科, 助教授 (80208016)

Co-Investigator(Kenkyū-buntansha) SUGITANI Koji  Nagoya City University, Institute of Natural Sciences, Assoc.Professor, 自然科学研究教育センター, 助教授 (80192615)
松原 英雄  名古屋大学, 大学院・理学研究科, 助手 (30219464)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥11,900,000 (Direct Cost: ¥11,900,000)
Fiscal Year 1998: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1997: ¥8,700,000 (Direct Cost: ¥8,700,000)
Keywordsinfrared camera / interstellar matter / young stellar objects / 銀河系構造
Research Abstract

Development of a cryogenic infrared camera to probe the 3.3 micron emission over the Galactic plane is underway. A Ritchey-Chretien optics system of the primary (25 cm in diameter) and secondary mirrors has been proved to have good optical quality. It has been installed in a cryostat with an InSb 256X256 array, and we have obtained infrared images with them. The electronics was tuned so that optimum operation is achieved under fairly strong background radiation. Observation of the Galactic plane with this system will be started this year.
Infrared imaging and spectroscopy of individual star forming regions in the Galaxy has been made to investigate the evolutionary stages when the star forming region radiates the 3.3 micron emission. In S140, its infrared source IRS1 has conspicuous ice absorption at 3.1 microns, and polarization changes across the absorption band. However, it has no 3.3 micron emission, which might mean that this object is too young to emit the 3.3 micron emission. We also searched a IRAS sample of young stellar candidates, and detected the 3.3 micron emission in 17 out of 45 objects. We identify these objects as slightly younger stars than the Herbig Ae/Be stars. Many of such stars seem to show the 3.3 micron emission. We also plan to search for features of young stellar objects with the ice absorption and with the 3.3 micron emission in near infrared images.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Kobayashi,N.: "Near-Infrared Spectropolarimetry of T Tauri" Astrophys.J.481. 936-942 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Goto,M.: "1-4 micrometer Spectroscopy of Very Red Stars Found in an I-Band Objective Prism Survey" PASJ.49. 485-492 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yao,Y.: "Near-Infrared Polarimetric Study of Monoceros R2 IRS" Astrophys.J.490. 281-290 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yao,Y.: "Near Infrared Polarimetric Study of S140 IRS" Astrophys.J.500. 320-328 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ishii,M.: "A Survey of Dust Features in the 3 Micron Spectra of YSO Candidates" Astron.J.116. 868-880 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Chen,Y.: "Near-Infrared Imaging of the Star-forming Region AFGL 5157" Astron.J.117. 446-455 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kobayashi, N.: "Near-Infrared Spectropolarimetry of T Tauri" Astrophys.J.481. 936-942 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Goto, M.: "1-4 micrometer Spectroscopy of Very Red Stars Found in an I-Band Objective Prism Survey" PASJ.49. 485-492 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yao, Y.: "Near-Infrared Polarimetric Study of Monoceros R2 IRS" Astrophys.J.490. 281-290 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yao, Y.: "Near Infrared Polarimetric Study of S140 IRS" Astrophys.J.500. 320-328 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ishii, M.: "A Survey of Dust Features in the 3 Micron Spectra of YSO Candidates" Astron.J.116. 868-880 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Chen, Y.: "Near-Infrared Imaging of the Star-forming Region AFGL 5157" Astron.J.117. 446-455 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yao,Y.: "Near Infrared Polarimetric Study of S140IRS" Astrophys.J.500. 320-328 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ishii,M.: "A Survey of Dust Features in the 3 Micron Spectra of YSO Candidates" Astron.J.116. 868-880 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Chen,Y.: "Near-Infrared Imaging of the Star-forming Region AFGL 5157" Astron.J.117. 446-455 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Kobayashi,N.: "Near-Infrared Spectropolarimetry of T Tuuri" Astrophys.J.481. 936-942 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Goto,M.: "1-4 micrometer Spectroscopy of Very Red Stars Found in an I-Band Objective Prism Survey" PASJ.49. 485-492 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yao,Y.: "Near-Infrared Polarimetric Study of Monoceros R2 IRS" Astrophys.J.490. 281-290 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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