Almost all stars were white dwarfs, fading to the end.

几乎所有的恒星都变成了白矮星，渐渐地凋零、熄灭。

One class of white dwarfs has almost pure helium atmospheres.

有一类白矮星的大气层几乎完全由纯氦气构成.

Ben Oppenheimer led the research team that discovered the white dwarfs.

本?奥本海姆领导发现这些白矮星的研究小组.

The binary star system consists of two white dwarfs—the burnt-out cores of sunlike stars.

该双星系统由两颗白矮星组成——所谓白矮星既是像太阳那样的恒星燃烧殆尽后遗留下来的核心。

Farihi and his team looked at 146 white dwarfs detected by the Sloan Digital Sky Survey that show the spectral signature of calcium pollution.

Farihi及其团队观察了斯隆数字巡天项目探测到的带有特定钙污染光谱标志的146颗白矮星。