WISE J180956.27-330500.2: A Candidate AGB star with Ongoing Episodic Mass Loss

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Description

SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe (June 18-21, 2013. Ito Hall, the University of Tokyo), Bunkyou-ku, Tokyo, Japan

Results of infrared photometries and dust shell modeling of a peculiar object WISE J180956.27-330500.2 are presented. The object has shown a significant time variation of its SED in the last 30 years. The variation is understood as a formation and expansion of massive dust shell since late 1990’s. The object was suspected to be a red star in the optical wavelengths before the mass ejection, which allows us to hypothesize that the object is possibly the first example of the AGB star just experiencing an episodic mass loss after a thermal pulse. Observation of this object with SPICA after some 10 years from now will bring us an important clue to understand the stellar evolution and mass loss, as well as the chemistry in the thick circumstellar envelopes.

形態: カラー図版あり

Physical characteristics: Original contains color illustrations

資料番号: AA1730027058

レポート番号: JAXA-SP-17-010E

Journal

Details 詳細情報について

  • CRID
    1050011086271736192
  • NII Article ID
    120006827265
  • ISSN
    24332232
  • Web Site
    http://id.nii.ac.jp/1696/00003029/
  • Text Lang
    en
  • Article Type
    conference paper
  • Data Source
    • IRDB
    • CiNii Articles

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