标题： 氦白矮星的质量-半径关系 显示英文标题

标题： Mass-radius relations for helium white dwarfs

摘要： 近年来，白矮星正受到越来越多的关注。 对白矮星质量-半径关系(M-R)的最新研究包括Wood(1990)，Vennes等人(1995)以及Althaus和Benvenuto(1997, 1998)。 Vennes等人(1995)计算了质量在0.4$M_\odot$到0.7$M_\odot$之间的静态质量-半径关系，并假设温度效应不为零。 他们假设光度与质量成正比，这适用于较冷的白矮星，但他们的结果处于高温有效温度范围内。 正如Althaus和Benvenuto(1997)所提到的，由于中微子辐射，热白矮星内部的光度并不与常数成正比。 本研究的目的是展示有限温度下中微子辐射的影响。 我们考虑了纯氦组成的白矮星的完全简并状态，以获得质量大于0.4$M_\odot$的静态质量-半径关系，考虑由于中微子能量损失的光度质量比。 显示英文摘要

摘要： In recent years, white dwarf stars are receiving increasing attension. The recent studies on the relation of M-R for the WDs are those of Wood (1990), Vennes et al. (1995) and Althaus and Benvenuto (1997, 1998). Vennes et al. (1995) computed static M-R relation for masses between 0.4 $M_\odot$ and 0.7 $M_\odot$ assuming non zero temperature effects. They assumed the luminosity is proportional to the mass which works for cool WDs but their results are in the range of high effective temperatures. As Althaus and Benvenuto (1997) mentioned, luminosity is not proportional to a constant for hot WD interiors because of neutrino emission. The purpose of this study is to present the effect of neutrino emission at finite temperatures. We considered fully degenerate configuration for WDs with pure helium composition to obtain static mass-radius relation for masses greater than 0.4 $M_\odot$ with luminosity mass ratio due to neutrino energy loss.