Three Dimensional Mapping of the Magellanic Bridge by High-Resolution Spectroscopy toward Multiple Sightlines

2013 Fiscal Year Final Research Report

• Project/Area Number: 23740148
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: Shinshu University
• Principal Investigator: MISAWA Toru 信州大学, 全学教育機構, 准教授 (60513447)
• Project Period (FY): 2011 – 2013
• Keywords: マゼラニック・ブリッジ / クェーサー吸収線 / 国際情報交流（アメリカ）

Research Abstract

The Magellanic Bridge (MB) is a physical connection between the Large and Small Magellanic Clouds (LMC, SMC). High-resolution spectroscopy of AGNs behind it is a powerful tool to investigate the internal structure of the MB. Absorption strength and profile are clearly different between sightlines toward not only the MB but the Magellanic Stream (MS). Because the total amount of gas in the MB and the MS is greater than the H I gas of the LMC and the SMC, the MB was probably formed by a tidal stripping from the SMC through gravitational interactions between the LMC and the SMC.

Research Products

• [Journal Article] The COS/UVES Absorption Survey of the Magellanic Stream. III : Ionization, Total Mass, and Inflow Rate onto the Milky Way (2014)
  • Author(s): Andrew J. Fox, Bart P. Wakker, Kathleen A. Barger, Audra K. Hernandez, Philipp Richter, Nicolas Lehner, Joss Bland-Hawthorn, Jane C. Charlton, Tobias Westmeier, Christopher Thom, Jason Tumlinson, Toru Misawa, J. Christopher Howk, L. Matthew Haffner, Justin Ely, Paola Rodriguez-Hidalgo,Nimisha Kumari
  • Journal Title: The Astrophysical Journal Volume: Vol.787, Issue 2, article id.147
  • DOI: 10.1088/0004-637X/787/2/147
  • Peer Reviewed
• [Journal Article] Spectroscopy along Multiple, Lensed Sight Lines through Outflowing Winds in the Quasar SDSS J1029+2623 (2013)
  • Author(s): Toru Misawa, Naohisa Inada, Ken Ohsuga, Poshak Gandhi, Rohta Takahashi, Masamune Oguri
  • Journal Title: The Astronomical Journal Volume: Vol.145, Issue 2, article id.48 Pages: 12
  • DOI: 10.1088/0004-6256/145/2/48
  • Peer Reviewed
• [Presentation] 多視線高分散分光観測によるマゼラニックブリッジの3次元マッピング (2014)
  • Author(s): Toru Misawa, Jane C. Charlton, Henry A. Kobulnicky, Philipp Richter, Paola Rodriguez-Hidalgo, Bart P. Wakker, Andrew Fox
  • Organizer: 日本天文学会2013年春季年会
  • Place of Presentation: 埼玉大学, R14c
  • Year and Date: 20140320-23
• [Presentation] レンズクエーサーを用いた多視線による高赤方偏移吸収体の諸性質の解明 (2014)
  • Author(s): 小山田涼香, 三澤透, 稲田直久, 大栗真宗
  • Organizer: 日本天文学会2014年春季年会
  • Place of Presentation: 国際基督教大学, R23a
  • Year and Date: 2014-03-21
• [Presentation] Three Dimensional Mapping of the Magellanic Bridge by High-Resolution Spectroscopy toward Multiple Sightlines (2012)
  • Author(s): Toru Misawa, Jane C. Charlton, Henry A. Kobulnicky, Philipp Richter, Paola Rodriguez-Hidalgo, Bart P. Wakker, Andrew Fox
  • Organizer: The Magellanic System : In Perspective (Magellanic Clouds Workshop)
  • Place of Presentation: The University of Western Australia
  • Year and Date: 20120910-13