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矮星新星Z Camelopardalisの周りに存在する古代の新星殻.

Michael M Shara1, Christopher D Martin, Mark Seibert

  • 1Department of Astrophysics, American Museum of Natural History, 79th Street and Central Park West, New York, New York 10024-5192, USA. mshara@amnh.org

Nature
|March 9, 2007
PubMed
まとめ

矮星新星Z Camelopardalisの周りの巨大な殻は,それが古典的な新星噴火を経験したことを示唆しています. この発見は,小惑星新星と古典的な新星過程を結びつけ,以前の大災害変数に関する理解に挑戦しています.

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科学分野:

  • 天文学と天体物理学について
  • 恒星の進化について
  • 災難的な変数

背景:

  • 壊滅的変数は,白矮星が赤矮星の仲間から物質を蓄積した二進星系である.
  • 矮星新星は,蓄積円盤の不安定性のために,エピソード的な明るさを示します.
  • 古典的な新星はより明るく,熱核の噴火と質量放出を含む.

研究 の 目的:

  • 原型の矮星新星 Z Camelopardalis を囲む拡張した殻の性質を調査する.
  • 殻が,矮星新星と古典的な新星現象を結びつける観測的証拠を提供しているかどうかを判断する.

主な方法:

  • Z. Camelopardalisを囲む拡張した殻の観察と分析.
  • 殻材料の質量推定. 殻材料の質量推定. 殻材料の質量推定. 殻材料の質量推定. 殻材料の質量推定. 殻材料の質量推定. 殻材料の質量推定. 殻材料の質量推定.
  • 殻の性質を古典的な新星や他の天体物理現象と比較する.

主要な成果:

  • 古典的な新星周りに通常見られるものよりもかなり大きい,例外的に伸びた殻が,Z Camelopardalis.の周りに検出されました.
  • シェルから派生した質量は,古典的な新星噴火から予想されるものと一致しています.
  • 殻の質量は,矮星新星風や惑星星雲からの起源と矛盾しています.

結論:

  • 観測された殻は,Z Camelopardalisが古典的な新星噴火を経験したことを示す強力な観測証拠を提供します.
  • この発見は,原型の矮星新星Z Camelopardalisと古典的な新星現象を結びつけている.
  • この発見は,矮星新星における白矮星が,古典的な新星噴火を起こすのに十分な質量を最終的に蓄積できるという理論を支持する.