Novae as a Mechanism for Producing Cavities around the Progenitors of SN 2002ic and Other Type Ia Supernovae | Zendy

W. M. WoodVasey | Zendy; J. L. Sokoloski | Zendy

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Novae as a Mechanism for Producing Cavities around the Progenitors of SN 2002ic and Other Type Ia Supernovae

Author(s) -

W. M. WoodVasey,

J. L. Sokoloski

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/506179

Subject(s) - supernova , white dwarf , physics , nova (rocket) , astrophysics , astronomy , coincidence , stars , medicine , alternative medicine , pathology , aeronautics , engineering

We propose that a nova shell ejected from a recurrent nova progenitor systemcreated the evacuated region around the explosion center of SN 2002ic. In thispicture, periodic shell ejections due to nova explosions on a white dwarf sweepup the slow wind from the binary companion, creating density variations andinstabilities that lead to structure in the circumstellar medium (CSM). Ourmodel naturally explains the observed gap between the supernova explosioncenter and the CSM in SN 2002ic, accounts for the density variations observedin the CSM, and resolves the coincidence problem of the timing of the explosionof SN 2002ic with respect to the apparent cessation of mass-loss in theprogenitor system. We also consider such nova outburst sweeping as a genericfeature of Type Ia supernovae with recurrent nova progenitors.Comment: Accepted to ApJL. 11 pages, 1 tabl

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