KAWKA, Adela, Gordon BRIGGS, Stéphane VENNES, Lilia FERRARIO, Ernst PAUNZEN a Dayal WICKRAMASINGHE. A fast spinning magnetic white dwarf in the double degenerate, super-Chandrasekhar system NLTT 12758. Monthly Notices of the Royal Astronomical Society. Oxford, England: OXFORD UNIV PRESS, 2017, roč. 466, č. 1, s. 1127-1139. ISSN 0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stw3149. |
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@article{1406894, author = {Kawka, Adela and Briggs, Gordon and Vennes, Stéphane and Ferrario, Lilia and Paunzen, Ernst and Wickramasinghe, Dayal}, article_location = {Oxford, England}, article_number = {1}, doi = {http://dx.doi.org/10.1093/mnras/stw3149}, keywords = {binaries: close; stars: individual: NLTT 12758; stars: magnetic field; white dwarfs}, language = {eng}, issn = {0035-8711}, journal = {Monthly Notices of the Royal Astronomical Society}, title = {A fast spinning magnetic white dwarf in the double degenerate, super-Chandrasekhar system NLTT 12758}, volume = {466}, year = {2017} }
TY - JOUR ID - 1406894 AU - Kawka, Adela - Briggs, Gordon - Vennes, Stéphane - Ferrario, Lilia - Paunzen, Ernst - Wickramasinghe, Dayal PY - 2017 TI - A fast spinning magnetic white dwarf in the double degenerate, super-Chandrasekhar system NLTT 12758 JF - Monthly Notices of the Royal Astronomical Society VL - 466 IS - 1 SP - 1127-1139 EP - 1127-1139 PB - OXFORD UNIV PRESS SN - 00358711 KW - binaries: close KW - stars: individual: NLTT 12758 KW - stars: magnetic field KW - white dwarfs N2 - We present an analysis of the close double degenerate NLTT 12758, which is comprised of a magnetic white dwarf with a field of about 3.1 MG and an apparently non-magnetic white dwarf. We measured an orbital period of 1.154 d and found that the magnetic white dwarf is spinning around its axis with a period of 23 min. An analysis of the atmospheric parameters has revealed that the cooling ages of the two white dwarfs are comparable, suggesting that they formed within a short period of time from each other. Our modelling indicates that the non-magnetic white dwarf is more massive (M = 0.83M(circle dot)) than its magnetic companion (M = 0.69M(circle dot)) and that the total mass of the system is higher than the Chandrasekhar mass. Although the stars will not come into contact over a Hubble time, when they do come into contact, dynamically unstable mass transfer will take place leading to either an accretion induced collapse into a rapidly spinning neutron star or a Type Ia supernova. ER -
KAWKA, Adela, Gordon BRIGGS, Stéphane VENNES, Lilia FERRARIO, Ernst PAUNZEN a Dayal WICKRAMASINGHE. A fast spinning magnetic white dwarf in the double degenerate, super-Chandrasekhar system NLTT 12758. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford, England: OXFORD UNIV PRESS, 2017, roč.~466, č.~1, s.~1127-1139. ISSN~0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stw3149.
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