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An accurate mass and radius measurement for an ultracool white dwarf

Parsons, Steven G.; Gansicke, B; Marsh, Tom R.; Bergeron, P; Copperwheat, Chris M.; Dhillon, Vik S.; Bento (Da Silva Bento), Joao; Littlefair, Stuart P.; Schreiber, Matthias R

Description

Studies of cool white dwarfs in the solar neighbourhood have placed a limit on the age of the Galactic disc of 8-9 billion years. However, determining their cooling ages requires the knowledge of their effective temperatures, masses, radii and atmospheric composition. So far, these parameters could only be inferred for a small number of ultracool white dwarfs for which an accurate distance is known, by fitting their spectral energy distributions in conjunction with a theoretical mass-radius...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/152490
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1111/j.1365-2966.2012.21773.x
Access Rights: Open Access

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