THE DOUBLE-DEGENERATE NUCLEUS OF THE PLANETARY NEBULA TS 01: A CLOSE BINARY EVOLUTION SHOWCASE
Tovmassian G, Yungelson L, Rauch T, Suleimanov V, Napiwotzki R, Stasinska G, Tomsick J, Wilms J, Morisset C, Pena M, Richer MG (2010)
Publication Status: Published
Publication Type: Journal article
Publication year: 2010
Journal
Publisher: IOP PUBLISHING LTD
Book Volume: 714
Pages Range: 178-193
Journal Issue: 1
DOI: 10.1088/0004-637X/714/1/178
Abstract
We present a detailed investigation of SBS 1150+599A, a close binary star hosted by the planetary nebula PN G135.9+55.9 (TS 01). The nebula, located in the Galactic halo, is the most oxygen-poor known to date and is the only one known to harbor a double degenerate core. We present XMM-Newton observations of this object, which allowed the detection of the previously invisible component of the binary core, whose existence was inferred so far only from radial velocity (RV) and photometric variations. The parameters of the binary system were deduced from a wealth of information via three independent routes using the spectral energy distribution (from the infrared to X-rays), the light and RV curves, and a detailed model atmosphere fitting of the stellar absorption features of the optical/UV component. We find that the cool component must have a mass of 0.54 +/- 0.2 M(circle dot), an average effective temperature, T(eff), of 58,000 +/- 3000 K, a mean radius of 0.43 +/- 0.3 R(circle dot), a gravity, log g = 5.0 +/- 0.3, and that it nearly fills its Roche lobe. Its surface elemental abundances are found to be: 12 + log He/H = 10.95 +/- 0.04 dex, 12 + log C/H = 7.20 +/- 0.3 dex, 12 + log N/H < 6.92, and 12 + log O/H < 6.80, in overall agreement with the chemical composition of the planetary nebula. The hot component has T(eff) = 160-180 kK, a luminosity of about similar to 10(4) L(circle dot) and a radius slightly larger than that of a white dwarf. It is probably bloated and heated as a result of intense accretion and nuclear burning on its surface in the past. The total mass of the binary system is very close to the Chandrasekhar limit. This makes TS 01 one of the best Type Ia supernova progenitor candidates. We propose two possible scenarios for the evolution of the system up to its present stage.
Authors with CRIS profile
Involved external institutions
National Autonomous University of Mexico / Universidad Nacional Autónoma de México (UNAM)
Mexico (MX)
University of California, Berkeley
United States (USA) (US)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
France (FR)
University of Hertfordshire
United Kingdom (GB)
Eberhard Karls Universität Tübingen
Germany (DE)
Russian Academy of Sciences / Росси́йская акаде́мия нау́к (RAS)
Russian Federation (RU)
Mexico (MX)
University of California, Berkeley
United States (USA) (US)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
France (FR)
University of Hertfordshire
United Kingdom (GB)
Eberhard Karls Universität Tübingen
Germany (DE)
Russian Academy of Sciences / Росси́йская акаде́мия нау́к (RAS)
Russian Federation (RU)
How to cite
APA:
Tovmassian, G., Yungelson, L., Rauch, T., Suleimanov, V., Napiwotzki, R., Stasinska, G.,... Richer, M.G. (2010). THE DOUBLE-DEGENERATE NUCLEUS OF THE PLANETARY NEBULA TS 01: A CLOSE BINARY EVOLUTION SHOWCASE. Astrophysical Journal, 714(1), 178-193. https://dx.doi.org/10.1088/0004-637X/714/1/178
MLA:
Tovmassian, Gagik, et al. "THE DOUBLE-DEGENERATE NUCLEUS OF THE PLANETARY NEBULA TS 01: A CLOSE BINARY EVOLUTION SHOWCASE." Astrophysical Journal 714.1 (2010): 178-193.
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