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1994 Fiscal Year Final Research Report Summary

Study of the structure and evolution of galaxies based on infrared observations of stars at the latest stage of their evolution

Research Project

Project/Area Number 04402002
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field Astronomy
Research InstitutionThe University of Tokyo

Principal Investigator

TSUJI Takashi  Univ.of Tokyo, Faculty of Science Professor, 理学部, 教授 (20011546)

Co-Investigator(Kenkyū-buntansha) TANAKA Masuo  Univ.of Tokyo, Graduate School of Science Associate Professor, 大学院・理学系研究科, 助教授 (70188340)
TANABE Toshihiko  Univ.of Tokyo, Faculty of Science Research Associate, 理学部, 助手 (90179812)
ICHIKAWA Takashi  Univ.of Tokyo, Faculty of Science Research Associate, 理学部, 助手 (80212992)
HAMABE Masaru  Univ.of Tokyo, Faculty of Science Research Associate, 理学部, 助手 (00156415)
NAKADA Yoshikazu  Univ.of Tokyo, Faculty of Science Associate Professor, 理学部, 助教授 (80011740)
Project Period (FY) 1992 – 1994
Keywordsstellar evolution / infrared observation / structure and evolution of galaxies / infrared array detector / IRAS database
Research Abstract

The purpose of the present research is to clarify the structure and evolution of galaxies on the basis of infrared observations of stars at the latest stage of their evolution. The rapid developments of the infrared array detectors in recent years made it possible to study cool stars, which can be used as probes to clarify the basic structure of galaxies.
For this purpose, we first developed infrared camera and spectrograph by the use of a large format infrared array detector PtSi 1040X1040. As the control system, we designed and manufactured a high speed and high precision AD converter based on the Messia (a CCD driving system developed at the National Astronomical Observatory). Our new system can be used for general purpose. We have developed new instruments equipped with a large format infrared array to be drived by our new control system :
1) Wide field infrared camera to be used with Kiso 105 cm Schmidt telescope.
2) Infrared spectrograph to be used at the coude focus of the 188cm reflector at the Okayama Astrophysical Observatory.
At present, the noise level of the detector is somewhat higher than expected, and we are doing our last efforts to improve this together with adjustments of the hard and soft wares of our system.
We also developed a computer system to analyze the IRAS database, which is the baic data for our present study. This data analysis system is also important for analyzing the data to be obtained by the new insruments mentioned above and by the ISO to be lauched this autumn. We further started to develope algorithm and softwares to analyze the data to be obtained by the ISO.For example, we have examined in detail the image reconstruction algorithm to be used for detecting faint images and this is the basis of our search for primeval galaxies in the infrared.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Tsuji,T.: "High resolution infrared spectra of silicon monoxide and silicon isotopic abundances in cool luminous stars" Astron.Astrophys.286. 469-491 (1194)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tsuji,T.: "A Strophysical Applications of Approximate Methods for Molecular Opacity-from stars to substellar brown dwarfs" Molecules in the Stellar Enrironment. 79-97 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ichikawa,T.: "The Peculiar Dust Distribution of M82" The Astrophysical Journal. 433. 645-647 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ichikawa,T.: "Near-Infrared Wide-Field Surface Photometry of M82" Astronomical Journal. in press (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sugai,H.: "Fabry-Perot Imaging of Molecular Hydrogen in Orion KL" The Astrophysical Journal. 420. 746-755 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sugai,H.: "A Fabry-Perot Imager for Near-Iufrared Astrophysics at CRL and Imaging of Hydrogen Recombination Lines" The Astrophysical Journal. 427. 511-518 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tsuji, T.: ""High resolution infrared spectra of silicon monoxide and Silicon isotopic abundances in cool luminous stars"" A&A. 286. 469-491 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tsuji, T.: ""Astrophysical Applications of Approximate Methods for Molecular Opacities - from stars to sub stellar brown dwarfs"" Molecules in Stellar Environment. 79-97 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ichikawa, T.: ""THE PECULIAR DUST DISTRIBUTION OF M82"" ApJ. 433. 645-647 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ichikawa, T.: ""NEAR-INFRARED WIDE-FIELD SURFACE PHOTOMETRY OF M82"" AJ. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sugai, H.: ""Fabry-Perot Imaging of Molecular Hydrogen in Orion KL Region"" ApJ. 420. 746-755 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sugai, H.: ""A Fabry-Perot Imager for Near-Infrared Astrophysics at CRL (Comunications Research Laboratory) 1.5 m Telescope and Imaging of Hydrogen Recombination Lines in the Orion Nebula"" ApJ. 427. 511-518 (1994)

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

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Published: 1996-04-15  

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