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Observational Study of Mass Function in Large Magellanic Molecular cloud

Research Project

Project/Area Number 09304025
Research Category

Grant-in-Aid for Scientific Research (A)

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

Principal Investigator

FUKUI Yasuo  Nagoya University, School of Science, Professor, 大学院・理学研究科, 教授 (30135298)

Co-Investigator(Kenkyū-buntansha) DOBASHI Kazuhito  Tokyo Gakugei University, Department of Astronomy and Earth Sciences, Assistant, 教育学部, 助手 (20237176)
MIZUNO Akira  Nagoya University, School of Science, Assistant professor, 大学院・理学研究科, 助手 (80212231)
OGAWA Hideo  Nagoya University, School of Science, Associate professor, 大学院・理学研究科, 助教授 (20022717)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥30,000,000 (Direct Cost: ¥30,000,000)
Fiscal Year 1998: ¥10,100,000 (Direct Cost: ¥10,100,000)
Fiscal Year 1997: ¥19,900,000 (Direct Cost: ¥19,900,000)
KeywordsRadio astronomy / Star formation / Molecular cloud / Galaxies / Magellanic Clouds / Interstellar molecules
Research Abstract

In order to understand the formation process of populous stellar clusters in the Magellanic Clouds, we have carried out the most extensive observations of molecular clouds by using the 4 m mm-wave telescope. NANTEN, installed at Las Campanas. These observations have covered the Large Magellanic Cloud fully at a linear resolutions of 40 pc, in the ^<12>C0 (J=1-0) emission at 2.6 mm wavelength. The main results are summarized as follows ;
(1) There are more than 100 giant molecular clouds. Their mass ranges from l0^5 M<of sun> to 2 \ 10^6 M<of sun>.
(2) The line intensity of CO emission in the Large Magellanic Cloud is smaller by a factor of 3 than that in the Galaxy for giant molecular clouds having a similar mass.
(3) For the 55 giant molecular clouds significantly detected, we find that they are spatially well correlated with the youngest stellar clusters with < 10 Myr (26 of 55).
(4) By comparing the molecular clouds with their associated HII regions, we find giant molecular clouds are rapidly dissipated after formation of stellar clusters.
Total molecular mass is calculated as 4-7 \ 10^6 M<of sun>, corresponding to * 10 % of the neutral hydrogen mass.

Report

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

    (44 results)

All Other

All Publications (44 results)

  • [Publications] H.Matsuhara: "Observations of [C II]158 Micron Line and Far-Infrared Continuum Emission toward the High-Latitude Molecular Clouds in Ursa Major" Astrophysical Journal. v.490. 744-751 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Yonekura: "Molecular Clouds in Cepheus and Cassiopeia" Astrophysical Journal Supplement. v.110. 21-69 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Fukui: "Relations between Star Formation and the Interstellar Medium" In Proc.of IAU Symposium ♯179,New Horizons from Multi-Wavelength Sky Surveys. 165-171 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] A.Obayashi: "Star Formation in the L1333 Molecular Cloud in Cassiopeia" Astronomical Journal. v.115. 274-285 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Onishi: "A C^<18>O Survey of Dense Cloud Cores in Taurus: Star Formation" Astrophysical Journal. v.502. 296-314 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] A.Kawamura: "A ^<13>CO Survey of Molecular Clouds in Gemini and Auriga" Astrophysical Journal Supplement. v.117. 387-425 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nagahama: "A Spatially Complete ^<13>CO J=1-0 Survey of the Orion A Cloud" Astrophysical Journal. v.116. 336-348 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Dobashi: "Interaction Between a Massive Molecular Outflow and Dense Gas Associated with IRAS 22142+5206" Astronomical Journal. v.115. 777-786 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Yonekura: "A Head-Tail-structured Molecular Cloud and a CO Outflow Associated with IRAS 22103+5828 in S134" Astrophysical Journal. v.115. 2009-2017 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] A.Mizuno: "A ^<13>CO(J=1-0) Search for Small Molecular Clouds toward the Chamaeleon-Musca Dark Cloud Complex" Astrophysical Journal Letters. v.507. 83-87 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.C.Xiao: "A Low-noise 230 GHz SIS Receiver for Radio Astronomy Employing Untuned Nb/AlOx/Nb Tunnel Junction" Astronomical Journal. v.19. 15-31 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Fukui: "A ^<12>CO Survey of the LMC with NANTEN" In Proc.of IAU Symposium ♯190, New Views of the Magellanic Clouds. in press. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 福井 康雄: "大宇宙の誕生" 光文社, 202 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Fukui et al.: "A ^<12>CO Survey of the LMC with NANTEN" In Proc.of IAU Symposium #190, New Views of the Magellanic Clouds. (in press). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Dobashi et al.: "Interaction Between a Massive Molecular Outflow and Dense Gas Associated with IRAS 22142+5206" Astronomical J.115. 777-786 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] A.Mizuno et al.: "A ^<13>CO (J=1-0) Search for Small Molecular Clouds toward the Chamaeleon-Musca Dark Cloud Complex" Astrophysi J., Letters. 507. 83-87 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] A.Kawamura et al.: "A ^<13>CO Survey of Molecular Clouds in Gemini and Auriga" Astrophysical J.Suppl.117. 387-425 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Onishi et al.: "A C^<18>O Survey of Dense Cloud Cores in Taurus : Star Formation" Astrophysical J.502. 296-314 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nagahama et al.: "A Spatially Complete ^<13>CO J=1-0 Survey of the Orion A Cloud" Astrophysical J.116. 336-348 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Yonekura et al.: "A Head-Tail-structured Molecular Cloud and a CO Outflow Associated with IRAS 22103+5828 in S134" Astrophysical J.115. 2009-2017 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] A.Obayashi et al.: "Star Formation in the L1333 Molecular Cloud in Cassiopeia" Astrophysical J.115. 274-285 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.C Xiao et al.: "A Low-noise 230 GHz SIS Receiver for Radio Astronomy Employing Untuned Nb/AlOx/Nb Tunnel Junctions" Astronomi J.19. 15-31 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Yonekura et al.: "Molecular Clouds in Cepheus and Cassiopeia" Astrophysical J.Suppl.110. 21-69 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] H.Matsuhara et al.: "Observations of [C II] 158 Micron Line and Far-Infrared Continuum Emission toward the High-Latitude Molecular Clouds in Ursa Major" Astrophysical J.490. 744-751 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Fukui and Y.Yonekura: "Relations between Star Formation and the Interstellar Medium" In Proc.of IAU Symposium #179, New Horizons from Multi-Wavelength Sky Surveys. 165-171 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] H.Matsuhara: "Observations of[C II]158 Micron Line and Far-Infrared Continuum Emission toward the High-Latitude Molecular Clouds in Ursa Major" Astrophysical Journal. v.490. 744-751 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Yonekura: "Molecular Clouds in Cepheus and Cassiopeia" Astrophysical Journal Supplement. v.110. 21-69 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Fukui: "Relations between Star Formation and the Interstellar Medium" In Proc.of IAU Symposium #179,New Horizons from Multi-Wavelength Sky Surveys. 165-171 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] A.Obayashi: "Star Formation in the L1333 Molecular Cloud in Cassiopeia" Astronomical Journal. v.115. 274-285 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Onishi: "A C^<18>O Survey of Dense Cloud Cores in Taurus:Star Formation" Astrophysical Journal. v.502. 296-314 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] A.Kawamura: "A ^<13>CO Survey of Molecular Clouds in Gemini and Auriga" Astrophysical Journal Supplement. v.117. 387-425 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Nagahama: "A Spatially Complete ^<13>COJ=1-0 Survey of the Orion A Cloud" Astrophysical Journal. v.116. 336-348 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Dobashi: "Interaction Between a Massive Molecular Outflow and Dense Gas Associated with IRAS 22142+5206" Astronomical Journal. v.115. 777-786 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Yonekura: "A Head-Tail-structured Molecular Cloud and a CO Outflow Associated with IRAS 22103+5828 in S134" Astrophysical Journal. v.115. 2009-2017 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] A.Obayashi: "Star Formation in the L1333 Molecular Cloud in Cassiopeia" Astronomical Journal. v.115. 274-285 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] A.Mizuno: "A ^<13>CO(J=1-0)Search for Small Molecular Clouds toward the Chamaeleon-Musca Dark Cloud Complex" Astrophysical Journal Letters. v.507. 83-87 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.C Xiao: "A Low-noise 230 GHz SIS Receiver for Radio Astronomy Employing Untuned Nb/AIOx/Nb Tunnel Junction" Astronomical Journal. v.19. 15-31 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Fukui: "A ^<12>CO Survey of the LMC with NANTEN" In Proc.of IAU Symposium #190,New Views of the Magellanic Clouds. (in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 福井 康雄: "大宇宙の誕生" 光文社, 202 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Dobashi: "Interaction Betweerra Massive Molecular Outflow and Dense Gas Associated with IRAS 22142+5206" Astronomical Journal. v.115. 777-786 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Yonekura: "Molecular Clouds in Cepheus and Cassiopeia" Astrophysical Journal Supplement. v.110. 21-69 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] H.Matsuhara: "Observations of [C II] 158 Micron Line and Far-Infrared Continuum Emission toward the High-Latitude Molecular Clouds in Ursa Major" Astrophysical Journal. v.490. 744-751 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] A.Obayashi: "Star Formation in the L1333 Molecular Cloud in Cassiopeia" Astronomical Journal. v.115. 274-285 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Onishi: "A C18O Survey of Dense Cloud Cores in Taurus : Star Formation" Astrophysical Journal. v.501(in press). (1998)

    • Related Report
      1997 Annual Research Report

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

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