期刊
ASTRONOMY & ASTROPHYSICS
卷 419, 期 2, 页码 L5-L8出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20040120
关键词
catalogs; stars : fundamental parameters; stars : white dwarfs
We investigate the sample of 1175 new nonmagnetic DA white dwarfs with the effective temperatures T-eff greater than or equal to 12000 K, which were extracted from the Data Release 1 of the Sloan Digital Sky Survey. We determined masses, radii, and bolometric luminosities of stars in the sample. The above parameters were derived from the effective temperatures T-eff and surface gravities log g published in the DR1, and the new theoretical M - R relations for carbon-core and oxygen-core white dwarfs. Mass distribution of white dwarfs in this sample exhibits the peak at M = 0.562 M. (carbon-core stars), and the tail towards higher masses. Both the shape of the mass distribution function and the empirical mass-radius relation are practically identical for white dwarfs with either pure carbon or pure oxygen cores.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据