Search for double degenerate progenitors of supernovae type Ia with SPY

R. Napiwotzki , N. Christlieb , H. Drechsel , H.-J. Hagen , U. Heber , D. Homeier , C. Karl , D. Koester

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B. Leibundgut T.R. Marsh S. Moehler G. Nelemans E.-M. Pauli D. Reimers A. Renzini L. Yungelson

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classification 🌌 astro-ph

keywords degeneratedoubleprogenitorssupernovaesurveytypebeenbinaries

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We report on a large survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae with the UVES spectrograph at the ESO VLT (SN Ia Progenitor surveY - SPY). About 560 white dwarfs were checked for radial velocity variations until now. Ninety new DDs have been discovered, including short period systems with masses close to the Chandrasekhar mass.

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Search for double degenerate progenitors of supernovae type Ia with SPY

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