Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-09-25
AIP Conf.Proc.968:62-65,2008
Astronomy and Astrophysics
Astrophysics
4 pages, 2 figures, submitted to the Proceedings of the conference "Astrophysics of Compact Objects", Huangshan, China, July 1
Scientific paper
10.1063/1.2840455
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.
Napiwotzki Ralf
Pena Miriam
Richer Michael
Stasinska Grazyna
Tomsick John
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