Evolution of Cloud Cores Forming Massive Star and Star Clusters

2012 Fiscal Year Final Research Report

• 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
• Keywords: 星形成 / 星団形成 / 大質量星

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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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 Pages: S1-S362
  • 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 (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)
  • Year and Date: 20120320-20130320
• [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)
  • Year and Date: 20120000
• [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)
  • Year and Date: 20110726-29
• [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)
  • Year and Date: 20110726-29
• [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