The Physics of Crystallizing White Dwarfs
Author(s) -
J. Isern,
R. Mochkovitch,
E. Garcı́a–Berro,
M. Hernanz
Publication year - 1997
Publication title -
the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.1086/304425
Subject(s) - white dwarf , astrophysics , physics , astronomy , formalism (music) , blue dwarf , redistribution (election) , wonder , stars , theoretical physics , art , musical , visual arts , social psychology , psychology , politics , political science , law
White dwarfs can be used as galactic chronometers and, therefore, provide important information about galactic evolution if good theoretical models of their cooling are available. Consequently, it is natural to wonder if all the sources or sinks of energy are correctly taken into account. One of these sources is partial differentiation of the chemical components of the white dwarf upon crystallization. In this paper we use a new formalism to show that if there is a redistribution of the elements inside the star, there is a net release of energy that has to be radiated away and that slows down the cooling rate of the white dwarf
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