New development of evolutionary paths to Type Ia supernovae

2010 Fiscal Year Self-evaluation Report

• Project/Area Number: 20540227
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Astronomy
• Research Institution: The University of Tokyo
• Principal Investigator: HACHISU Izumi The University of Tokyo, 大学院・総合文化研究科, 准教授 (90135533)
• Project Period (FY): 2008 – 2011
• Keywords: 超新星 / 連星系の進化 / 銀河の化学進化 / 恒星風 / 超軟X線源 / 中質量星

Research Abstract

本研究は、最新の観測結果を統一的に説明する、新しいIa型超新星の進化経路を構築し、超新星の起源を理論面から解明することである。
Ia型超新星は、唯一、遠方まで達する標準光源として宇宙膨張則の決定に使われているだけでなく、銀河の化学進化においても重要な役割を果たしている。しかし、どのような星(``親星'')がIa型超新星として爆発するのか、に関しては、現在のところ決定的な結論が出ていない。

Research Products

• [Journal Article] A Light-curve Model of the Symbiotic Nova PU Vul (1979) : A Very Quiet Explosion with Long-lasting Flat Peak (2011)
  • Author(s): Kato, M., Hachisu, I., Cassatella, A., Gonzalez-Riestra, R.
  • Journal Title: The Astrophysical Journal 727 Pages: id.72 1-9
  • Peer Reviewed
• [Journal Article] Supersoft X-ray Phase of Single Degenerate Type Ia Supernova Progenitors in Early-type Galaxies (2010)
  • Author(s): Hachisu, I., Kato, M., Nomoto, K.
  • Journal Title: The Astrophysical Journal 724 Pages: L212-L216
  • Peer Reviewed
• [Journal Article] A Prediction Formula of Supersoft X-ray Phase of Classical Novae (2010)
  • Author(s): Hachisu, I., Kato, M.
  • Journal Title: The Astrophysical Journal 709 Pages: 680-714
  • Peer Reviewed
• [Journal Article] A Universal Decline Law of Classical Novae. IV.V838 Her (1991) : A Very Massive White Dwarf (2009)
  • Author(s): Kato, M., Hachisu, I., Cassatella, A.
  • Journal Title: The Astrophysical Journal 704 Pages: 1676-1688
  • Peer Reviewed
• [Journal Article] Multiplicity of Nova Envelope Solutions and Occurrence of Optically Thick Winds (2009)
  • Author(s): Kato, M., Hachisu, I.
  • Journal Title: The Astrophysical Journal 699 Pages: 1293-1299
  • Peer Reviewed
• [Journal Article] Optical and Supersoft X-Ray Light-Curve Models of Classical Nova V2491 Cygni : A New Clue to the Secondary Maximum (2009)
  • Author(s): Hachisu, I., Kato, M.
  • Journal Title: The Astrophysical Journal 694 Pages: L103-L106
  • Peer Reviewed
• [Journal Article] A Universal Decline Law of Classical Novae. III.GQ Muscae 1983 (2008)
  • Author(s): Hachisu, I., Kato, M., Cassatella, A.
  • Journal Title: The Astrophysical Journal 687 Pages: 1236-1252
  • Peer Reviewed
• [Journal Article] Helium Nova on a Very Massive White Dwarf : A Revised Light-Curve Model of V445 Puppis (2000) (2008)
  • Author(s): Kato, M., Hachisu, I., Kiyota, S., Saio, H.
  • Journal Title: The Astrophysical Journal 684 Pages: 1366-1373
  • Peer Reviewed
• [Journal Article] The Delay-Time Distribution of Type Ia Supernovae and the Single-Degenerate Model (2008)
  • Author(s): Hachisu, I., Kato, M., Nomoto, K.
  • Journal Title: The Astrophysical Journal 683 Pages: L127-L130
  • Peer Reviewed
• [Presentation] A theoretical MMRD relation and the absolute magnitude of classical novae
• [Presentation] Supersoft X-ray Phase of Single Degenerate Type Ia Supernova Progenitors in Early Type Galaxies
• [Presentation] A light curve model of the shortest supersoft X-ray source phase of V2491 Cygni
• [Presentation] A Prediction Formula of Supersoft X-ray Phase of Cne
• [Presentation] 古典新星の光度曲線における極大等級-減光率関係の理論的導出
• [Presentation] 古典新星V2491 Cygの光度曲線解析と2次極大のメカニズム
• [Presentation] Ia型超新星の観測された年齢分布を説明できる連星進化モデル
• [Book] シリーズ現代の天文学(共著)(第六章「連星系の進化」)
• [Book] 進化する宇宙(共著)第3章～第6章
• [Remarks] ホームページ
  • URL: http://lyman.c.u-tokyo.ac.jp/~hachisu/index.shtml