Is WD0433+270 an iron-core white dwarf?
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hdl:2117/125232
Tipus de documentText en actes de congrés
Data publicació2007
EditorPoS - Proceedings of Science
Condicions d'accésAccés obert
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Abstract
We study a common proper motion pair formed by a white dwarf (WD0433+270) and a mainsequence star (BD+26 730) that apparently has been classified as a member of the Hyades open cluster. Previous studies of the white dwarf component yielded a cooling time of ~ 4 Gyr. Although it has not been discussed before explicitly, this result is 6 times larger than the age of the Hyades cluster, giving rise to an apparent conflict between the cooling ages of white dwarfs and those of main sequence stars. We investigate whether this system really belongs to the Hyades cluster and, accordingly, provide a possible explanation of the nature of the white dwarf member considering different core compositions. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
CitacióCatalan, S., Ribas, I., Isern, J., Garcia Berro, E. Is WD0433+270 an iron-core white dwarf?. A: Trobades Científiques de la Mediterrània. "Supernovae: lights in the darkness (SUPERNOVA)". PoS - Proceedings of Science, 2007, p. 1-6.
Versió de l'editorhttps://pos.sissa.it/060/009/
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2007 SUPERNOVA_009.pdf | 112,7Kb | Visualitza/Obre |