Recycling Matter in the Universe. X-ray observations of SBS 1150+599A (PN G135.9+55.9)
Gagik Tovmassian, John Tomsick, Ralf Napiwotzki, Lev Yungelson, Miriam, Pe\~na, Graz\.yna Stasi\'nska, Michael Richer
TL;DR
This study uses X-ray observations to reveal a hot compact star in the binary nucleus of planetary nebula SBS 1150+599A, suggesting it may be a supernova type Ia progenitor due to its high mass.
Contribution
The paper provides the first X-ray detection of the hidden component in SBS 1150+599A, enabling estimation of system parameters and identifying it as a potential supernova progenitor.
Findings
The hidden binary component is a very hot compact star.
The system's total mass likely exceeds the Chandrasekhar limit.
SBS 1150+599A is a strong candidate for a type Ia supernova progenitor.
Abstract
We present X-ray observations of the close binary nucleus of the planetary nebula SBS 1150+599A obtained with the XMM-Newton satellite. Only one component of the binary can be observed in optical-UV. New X-ray observations show that the previously invisible component is a very hot compact star. This finding allows us to deduce rough values for the basic parameters of the binary. With a high probability the total mass of the system exceeds Chandrasekhar limit and makes the SBS 1150+599A one of the best candidate for a supernova type Ia progenitor.
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