An object that defies stereotypes. X-ray observations of SBS 1150+599A -- the binary nucleus of PN G135.9+55.9

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dc.creatorTovmassian, G.
dc.creatorTomsick, J.
dc.creatorNapiwotzki, R.
dc.creatorYungelson, L.
dc.creatorStasińska, G.
dc.creatorPeña, M.
dc.creatorRicher, M.
dc.date2007-09-25
dc.date.accessioned2026-07-07T08:32:07Z
dc.date.available2026-07-07T08:32:07Z
dc.descriptionWe present X-ray observations of the close binary nucleus of the planetary nebula PN G135.9+55.9 obtained with the XMM satellite. The nebula is the most oxygen-poor PN known to date and is located in the Galactic halo. It is known to harbor a close binary nucleus of which only one component can be observed in optical-UV range. New X-ray observations show that the invisible component is a very hot compact star. This finding allows us to reconstruct the immediate past of the object and predict its future. The parameters of the binary components we determine strongly suggest that the precursor was a symbiotic supersoft X-ray source that finished its life by Roche lobe overflow. PN G135.9+55.9 is an excelent candidate for a future type Ia supernova.
dc.description8 pages, 5 figures, submitted to Proceedings of the conference "Asymmetrical Planetary Nebulae IV", La Palma, 18-22 June, 2007
dc.identifierhttps://arxiv.org/abs/0709.4016
dc.identifierhttp://arxiv.org/abs/0709.4016
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/138703
dc.subjectAstrophysics
dc.titleAn object that defies stereotypes. X-ray observations of SBS 1150+599A -- the binary nucleus of PN G135.9+55.9
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