Evolution of Cloud Cores Forming Massive Star and Star Clusters

• Project/Area Number: 22340040
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Astronomy
• Research Institution: Tokyo Gakugei University
• Principal Investigator: DOBASHI Kazuhito 東京学芸大学, 教育学部, 准教授 (20237176)
• Co-Investigator(Kenkyū-buntansha): DOBASHI Kazuhito 東京学芸大学, 教育学部, 准教授 (20237176) ; NAKAMURA Fumitaka 国立天文台, 理論研究部, 准教授 (20291354) ; ONISHI Toshikazu 大阪府立大学, 理学研究科, 教授 (30314058) ; MATSUMOTO Tomoaki 法政大学, 人間環境学部, 教授 (60308004)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000); Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2011: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000); Fiscal Year 2010: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
• Keywords: 星形成 / 星団形成 / 大質量星 / 大質量星形成 / 分子雲 / 分子雲コア / 大質量形成 / 宇宙科学 / 宇宙物理 / 天文 / 電波天文学 / 光赤外線天文学

Research Abstract

The purpose of our study is to investigate physical properties of molecular cloud cores forming massive stars and star clusters. We first produced an all-sky catalog of dense cloud cores utilizing the 2 Micron All Sky Survey Point Source Catalog (2MASS PSC). Based on the catalog, we carried out molecular line observations toward a number of dense cores accompanied by young infrared clusters to derive their typical molecular mass, hydrogen density, excitation temperature, and velocity dispersion.

Research Products

• [Journal Article] Atlasand Catalog of Dark Clouds Basedon the 2Micron All Sky Survey. II Correction of the Background Using the Besancon Galaxy Model (2013)
  • Author(s): K. Dobashi, D. J. Marshall, T. Shimoikura, and J.-Ph. Bernard
  • Volume: Vo.65, articleid.31
  • Pages: 16-16
  • Peer Reviewed
• [Journal Article] MolecularClumpsandInfraredClustersin the S247, S252, and BFS52 Regions (2013)
  • Author(s): T. Shimoikura, K. Dobashi, H. Saito, T. Matsumoto, F. Nakamura, A. Nishimura, K. Kimura, T. Onishi, and H. Ogawa
  • Journal Title: Astroop. Journal Volume: Vol.768,articleid72 Pages: 27-27
  • Peer Reviewed
• [Journal Article] Atlas and Catalog of Dark Clouds Based on the 2 Micron All Sky Survey. II. Correction of the Background Using the Besançon Galaxy Model (2013)
  • Author(s): K. Dobashi, D. J. Marshall, T. Shimoikura, and J.-Ph. Bernard
  • Journal Title: Publ. Astron. Soc. Japan Volume: 65
  • Peer Reviewed
• [Journal Article] Molecular Clumps and Infrared Clusters in the S247, S252, and BFS52 Regions (2013)
  • Author(s): Shimoikura, T., Dobashi, K., Saito, H., Matsumoto, T., Nakamura, F., Nishimura, A., Kimura, K., Onishi, T., and Ogawa, H.
  • Journal Title: The Astrophysical Journal Volume: 768 Issue: 1 Pages: 72-72
  • DOI: 10.1088/0004-637x/768/1/72
  • Peer Reviewed
• [Journal Article] A 1.85 m Mm-Submm Telescope for Large-Scale Molecular Gas Survey 12CO, 13CO, and C18O (J=2-1) (2013)
  • Author(s): Toshikazu Onishi, Atsushi Nishimura, Yuya Ota, Akio Hashizume, Yoshiharu Kojima, Akihito Minami, Kazuki Tokuda et al.
  • Journal Title: Publ. Astron. Soc. Japan Volume: 65
  • Peer Reviewed
• [Journal Article] Dark gas in the solarneighborhood from extinction data (2012)
  • Author(s): D. Paradis, K. Dobashi, T. Shimoikura, A. Kawamura, T. Onishi, Y. Fukui, and J.Ph. Beranrd
  • Journal Title: Astro. Astrop Volume: Vol.543,articleid.A103 Pages: 9-9
  • Peer Reviewed
• [Journal Article] Molecular Line Observations of MCLD123.5+24.9in the Polaris Cirrus (2012)
  • Author(s): TOMOMI SHIMOIKURA, KAZUHITO DOBASHI, TOHKO SAKURAI, SHURO TAKANO, SHINGO NISHIURA, AND TOMOYA HIROTA
  • Journal Title: Astrop. Journal Volume: Vol.731,articleid.195 Pages: 15-15
  • Peer Reviewed
• [Journal Article] Dark gas in the solar neighborhood from extinction data (2012)
  • Author(s): Paradis, D.
  • Journal Title: Astronomy & Astrophysics Volume: 543 Pages: 102-102
  • DOI: 10.1051/0004-6361/201118740
  • Peer Reviewed
• [Journal Article] Molecular Line Observations of MCLD 123.5+24.9 in the Polaris Cirrus (2012)
  • Author(s): TOMOMI SIMOIKURA, KAZUHITO DOBASHI, TOHKO SAKURAI, SHURO TAKANO, SHINGO NISHIURA, AND TOMOYA HIROTA
  • Journal Title: Astrop. Journal Volume: 731 Issue: 2 Pages: 195-195
  • DOI: 10.1088/0004-637x/745/2/195
  • Peer Reviewed
• [Journal Article] Planck early results. XXV. Thermal dust in nearbymolecular clouds", Planck Collaboratio; (2011)
  • Author(s): Abergel, A. Ade, P. A. R. Aghanim, N. Arnaud, M. Ashdown, M. Aumont, J. Baccigalupi, C. Balbi, A
  • Journal Title: Banday, A. J. and 190 coauthors Volume: Vol.536, articleid.A25 Pages: 18-18
  • Peer Reviewed
• [Journal Article] Planck early results. XXIII The first all-sky survey ofGalactic cold clumps (2011)
  • Author(s): Ade, P. A. R. Aghanim, N. Arnaud, M. Ashdown, M. Aumont, J. Baccigalupi, C. Balbi, A. Banday, A. J. Barreiro, R. B. and 195 coauthors
  • Journal Title: Astron. Astrop Volume: Vol.536, articleid. A23 Pages: 33-33
  • Peer Reviewed
• [Journal Article] STAR FORMATION AND DISTRIBUTIONS OF GAS ANDDUST IN THE CIRCINUS CLOUD (2011)
  • Author(s): TOMOMI SHIMOIKURA AND KAZUHITO DOBASHI
  • Journal Title: Astrop.Journal Volume: Vol.731,articleid23 Pages: 14-14
  • Peer Reviewed
• [Journal Article] A Statistical Study of Dust Properties in Large Magellanic Cloud Molecular Clouds (2011)
  • Author(s): Paradis Deborah ,Reach William T,Bernard Jean-Philippe, Madden Suzanne, Dobashi Kazuhito , Meixner Margaret , Onishi Toshikazu ,Kawamura Akiko,Fukui Yasuo
  • Journal Title: Astron. Jornal Volume: Vol.141,articleid43 Pages: 16-16
  • Peer Reviewed
• [Journal Article] Atlas and Catalog of Dark Clouds Based on the 2 Micron All Sky Survey (2011)
  • Author(s): Dobashi, K
  • Journal Title: Publ. Astron. Soc Volume: Vol.63
  • NAID: 10030717898
  • Peer Reviewed
• [Journal Article] Atlas and Catalog of Dark Clouds Based on the 2 Micron All Sky Survey (2011)
  • Author(s): Dobashi, K
  • Journal Title: Publ. Astron. Soc. Japan Volume: 63
  • NAID: 10030717898
  • Peer Reviewed
• [Journal Article] A Statistical Study of Dust Properties in Large Magellanic Cloud Molecular Clouds (2011)
  • Author(s): Paradis Deborah，Reach William T，Bernard Jean-Philippe，Madden Suzanne, Dobashi Kazuhito，Meixner Margaret，Onishi Toshikazu，Kawamura Akiko, and Fukui Yasuo,
  • Journal Title: Astron. Jornal Volume: 141 Issue: 2 Pages: 43-43
  • DOI: 10.1088/0004-6256/141/2/43
  • Peer Reviewed
• [Journal Article] STAR FORMATION AND DISTRIBUTIONS OF GAS AND DUST IN THE CIRCINUS CLOUD (2011)
  • Author(s): TOMOMI SHIMOIKURA AND KAZUHITO DOBASHI
  • Journal Title: Astrop. Journal Volume: 731 Issue: 1 Pages: 23-23
  • DOI: 10.1088/0004-637x/731/1/23
  • Peer Reviewed
• [Journal Article] Planck early results. XVII.Origin of the submillimetre excess dust emission in the Magellanic Clouds (2011)
  • Author(s): Planck Collaboration ; Ade, P.A.R., et al
  • Journal Title: Astronomy & Astrophysics Volume: 536 Pages: 19-34
  • DOI: 10.1051/0004-6361/201116473
  • Peer Reviewed
• [Journal Article] Planck early results. XIX.All-sky temperature and dust optical depth from Planck and IRAS. Constraints on the "dark gas" in our Galaxy (2011)
  • Author(s): Planck Collaboration ; Ade, P.A.R., et al
  • Journal Title: Astronomy & Astrophysics Volume: 536 Pages: 17-33
  • DOI: 10.1051/0004-6361/201116479
  • Peer Reviewed
• [Journal Article] Planck early results. XXIII. The first all-sky survey of Galactic cold clumps (2011)
  • Author(s): Planck Collaboration; Ade, P. A. R. et al.
  • Journal Title: Astron. Astrop. Volume: 536 Pages: A23-A23
  • DOI: 10.1051/0004-6361/201116472
  • Peer Reviewed
• [Journal Article] Planck early results. XXV. Thermal dust in nearby molecular clouds (2011)
  • Author(s): Planck Collaboration; Ade, P. A. R. et al.
  • Journal Title: Astron. Astrop. Volume: 536 Pages: A25-A25
  • DOI: 10.1051/0004-6361/201116483
  • Peer Reviewed
• [Journal Article] Atlas and Catalog of Dark Clouds Based on the 2 Micron AU Sky Survey (2011)
  • Author(s): Dobashi, K.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63 SP1
  • Peer Reviewed
• [Journal Article] STAR FORMATION AND DISTRIBUTIONS OF GAS AND DUST IN THE CIRCINUS CLOUD (2011)
  • Author(s): Shimoikura, T., Dobashi, K.
  • Journal Title: The Astrophysical Journal Volume: Vol.731,article ID.23 Pages: 1-14
  • Peer Reviewed
• [Journal Article] A Statistical Study of Dust Properties in Large Magellanic Cloud Molecular Clouds (2011)
  • Author(s): Paradis, D., et al
  • Journal Title: The Astronomical Journal Volume: Vol.141,article ID.43 Pages: 1-16
  • Peer Reviewed
• [Presentation] CygOB7分子雲の巨大分子雲コアと衝突するフィラメント群の発見 (2013)
  • Author(s): 土橋一仁、松本倫明、下井倉ともみ
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 埼玉大学（埼玉県）
• [Presentation] CygOB7分子雲の巨大分子雲コアと衝突するフィラメント群の発見 (2012)
  • Author(s): 土橋一仁、松本倫明、下井倉ともみ
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 埼玉大学(埼玉県)
• [Presentation] Cluster formation in the Sh247/ Sh252/ BFS52 regions (2012)
  • Author(s): T. SHIMOIKURA, K. DOBASHI, T. ONISHI, H. OGAWA, K. KIMURA, A. NISHIMURA, T. MATSUMOTO, F. NAKAMURA , AND H. SAITO
  • Organizer: The New Trends in Radio Astronomy in the ALMA Era The 30th Anniversary of Nobeyama Radio Observatory
  • Place of Presentation: The Prince Hakone hotel (Kanagawa, Japan)
• [Presentation] Atlas and Catalog of Dark Clouds Based on the 2 Micron All Sky Survey. II.Correction of the Background Using the Besancon Galaxy Model (2012)
  • Author(s): KAZUHITO DOBASHI, DOUGLAS J. MARSHALL, TOMOMI SHIMOIKURA,JEAN-PHILIPPE BERNARD
  • Organizer: The New Trends in Radio Astronomy in the ALMA Era The 30th Anniversary of Nobeyama Radio Observatory
  • Place of Presentation: The Prince Hakone (Kanagawa, Japan)
• [Presentation] The CCS 45 GHz Zeeman Project: Magnetic Field Measurements Towards Prestellar Cores (2012)
  • Author(s): F. NAKAMURA, H. OGAWA, S. KAMENO, K. KIMURA, I. MIZUNO, K. TOKUDA, M. TAKATSU, D. IONO, S. TAKANO, K. DOBASHI, T. MATSUMOTO, et al.
  • Organizer: The New Trends in Radio Astronomy in the ALMA Era The 30th Anniversary of Nobeyama Radio Observatory
  • Place of Presentation: The Prince Hakone (Kanagawa, Japan)
• [Presentation] Cluster formation in the Sh247/ Sh252/ BFS52 regions (2012)
  • Author(s): T. SHIMOIKURA, K. DOBASHI, T. ONISHI, H. OGAWA, K. KIMURA, A. NISHIMURA, T. MATSUMOTO, F. NAKAMURA , AND H. SAIT
  • Organizer: The New Trends in Radio Astronomy in the ALMA Era The 30th Anniversary of Nobeyama Radio Observatory
  • Place of Presentation: The Prince Hakone (Kanagawa, Japan)
• [Presentation] he 1.85m mm-submm telescope: A newly-developed CO multi-line surveyor (2012)
  • Author(s): A. NISHIMURA, K. KIMURA, K. MURAOKA, H. MAEZAWA, T. ONISHI, H. OGAWA, K. DOBASHI, AND 1.85M GROU
  • Organizer: The New Trends in Radio Astronomy in the ALMA Era The 30th Anniversary of Nobeyama Radio Observatory
  • Place of Presentation: The Prince Hakone (Kanagawa, Japan)
• [Presentation] 銀河中心部のDouble Helix Nebulaに付随する分子雲の発見２ (2012)
  • Author(s): 榎谷玲依、鳥居和史、古橋絵利、中村公紀、吉池智史、奥田武志、山本宏昭、福井康雄、松元亮治、河村晶子、水野範和、西村淳、大西利和、Mark R. Moris、土橋一仁、Mathias Schultheis
  • Organizer: 日本天文学会
  • Place of Presentation: 龍谷大学（京都府）
• [Presentation] 1.85m電波望遠鏡プロジェクトの開発進捗（III） (2012)
  • Author(s): 西村淳、坂口翼、辻英俊、太田裕也、橋詰章雄、小島義晴、南野仁、近広祐一、阿部安宏、木村公洋、村岡和幸、前澤裕之、大西利和、小川英夫、土橋一仁、半田利弘、中島拓、久野成夫、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 龍谷大学（京都府）
• [Presentation] Release of the Atlas and Catalog of Dark Clouds Based on 2 MASS (2011)
  • Author(s): Shimoikura, T., Dobashi, K.
  • Organizer: The PLANCK Conference 2011
  • Place of Presentation: Cite des Sciences et l'Industrie, Paris
  • Year and Date: 2011-01-13
• [Presentation] Atlas and Catalog of Dark Clouds Based on the 2 Micron All Sky Survey (2011)
  • Author(s): Dobashi, K., Shimoikura, T.
  • Organizer: The PLANCK Conference 2011
  • Place of Presentation: Cite des Sciences et l'Industrie, Paris
  • Year and Date: 2011-01-12
• [Presentation] Simultaneous 12^CO, 13^CO, and C^18O (J=2-1) Observations of the Monkey-Head Nebulae", Shimoikura (2011)
  • Author(s): T., and Dobashi, K
  • Organizer: The 11th Asia-Pacific IAU Regional Meeting (APRIM 2011)
  • Place of Presentation: The Empress Hotel & Convention Centre(Chian Mai,Thailand)
• [Presentation] Atlas and Catalog of Dark Clouds Basedon the 2 Micron All Sky Survey (2011)
  • Author(s): Dobashi, K., and Shimoikura, T
  • Organizer: The 11th Asian-Pacific Regional IAU Meeting (APRIM 2011)
  • Place of Presentation: The Empress Hotel & Convention Centre (Chian Mai, Thailand)
• [Presentation] Atlas and Catalog of Dark Clouds Based on the 2 Micron All Sky Survey (2011)
  • Author(s): Dobashi, K., and Shimoikura, T.
  • Organizer: The 11th Asian-Pacific Regional IAU Meeting (APRIM 2011)
  • Place of Presentation: The Express Hotel & Convention Centre (Chian Mai, Thailand)
• [Presentation] Simultaneous 12CO, 13CO, and C18O (J=2-1) Observations of the Monkey-Head Nebulae (2011)
  • Author(s): Shimoikura, T., and Dobashi, K.
  • Organizer: The 11th Asia-Pacific IAU Regional Meeting (APRIM 2011)
  • Place of Presentation: The Express Hotel & Convention Centre (Chian Mai, Thailand)
• [Presentation] 1.85m電波望遠鏡による12CO, 13CO, C18O(J=2-1)スペクトルを用いた銀河系分子雲広域観 測 (2011)
  • Author(s): 大西利和、西村淳、坂口翼、辻英俊、橋詰章雄、前澤裕之、村岡和幸、木村公洋、小川英夫、大橋健次郎、中込圭佑、下井倉ともみ、土橋一仁、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 1.85m電波望遠鏡によるオリオン分子雲の広域観測 (2011)
  • Author(s): 西村淳、坂口翼、辻英俊、南野仁、木村公洋、村岡和幸、前澤裕之、大西利和、小川英夫、下井倉ともみ、土橋一仁、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 大阪府立大学1.85m電波望遠鏡によるS247/S252分子雲の観測 (2011)
  • Author(s): 下井倉ともみ、土橋一仁、大橋健次郎、中込圭佑、仲村賢一、西村淳、木村公洋、大西利和、小川英夫、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 1.85m電波望遠鏡による銀河面分子雲の広域観測 (2011)
  • Author(s): 辻英俊、西村淳、坂口翼、太田裕也、橋詰章雄、木村公洋、村岡和幸、大西利和、小川英夫、下井倉ともみ、土橋一仁、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 1.85m電波望遠鏡によるCygnus OB7 領域の分子雲観測 (2011)
  • Author(s): 坂口翼、西村淳、辻英俊、橋詰章雄、小島義晴、木村公洋、村岡和幸、大西利和、小川英夫、中込圭佑、大橋健次郎、下井倉ともみ、土橋一仁、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 1.85m電波望遠鏡による分子雲コアの統計的研究 (2011)
  • Author(s): 中込圭佑、仲村賢一、大橋健次郎、下井倉ともみ、土橋一仁、西村淳、木村公洋、大西利和、小川英夫、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 1.85m電波望遠鏡によるCep領域・S134領域のCO分子輝線観測 (2011)
  • Author(s): 大橋健次郎、仲村賢一、中込圭佑、下井倉ともみ、土橋一仁、西村淳、木村公洋、大西利和、小川英夫、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 1.85m電波望遠鏡による牡牛座暗黒星雲L1506周辺の分子雲観測 (2011)
  • Author(s): 橋詰 章雄、西村 淳、阪口 翼、辻 英俊、木村 公洋、村岡 和幸、前澤 裕之、大西 利和、小川 英夫 、下井倉 ともみ、土橋 一仁 、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 2 Micron All Sky Survey に基づく暗黒星雲の全天アトラスの高精度化 (2011)
  • Author(s): 土橋一仁、下井倉ともみ、D. Marshall、J-Ph. Bernard
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 1.85m電波望遠鏡プロジェクトの開発進捗（II） (2011)
  • Author(s): 西村淳、坂口翼、辻英俊、太田裕也、橋詰章雄、小島義晴、南野仁、近広祐一、阿部安宏、木村公洋、村岡和幸、前澤裕之、大西利和、小川英夫、土橋一仁、半田利弘、中島拓、久野成夫、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 1.85m電波望遠鏡における定在波除去装置の開発 (2011)
  • Author(s): 小島義晴、西村淳、片瀬徹也、太田裕也、南野仁、木村公洋、村岡和幸、前澤裕之、大西利和、小川英夫、土橋一仁、水野亮、中島拓、久野成夫、1.85m鏡グループ
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Presentation] 暗黒星雲をテーマとした展覧会の開催 (2011)
  • Author(s): 下井倉ともみ、土橋一仁、鉄矢悦郎、俵聡子、暗黒星雲プロジェクト展実行委員会
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学（鹿児島県）
• [Book] 小学校教員のための理科教育―科学的な見方・考え方を養うー (2011)
  • Author(s): 土橋一仁
  • Publisher: 東京学芸大学出版会
• [Remarks] 分子雲コアのデータ公開用のホームページ
  • URL: http://astro.u-gakugei.ac.jp/~tenmon/Atlas/index.html
• [Remarks]
  • URL: http://astro.u-gakugei.ac.jp/~tenmon/Atlas/index.html
• [Remarks] 暗黒星雲と分子雲コアのデータベース
  • URL: http://astro.u-gakugei.ac.jp/~tenmon/Atlas/index.html
• [Remarks] 暗黒星雲及び分子雲コアのデータベース
  • URL: http://astro.u-gakugei.ac.jp/~tenmon/Atlas/index.html
• [Remarks]
  • URL: http://darkclouds.u-gakugei.ac.jp/index.html