When it dies ( by swelling to become a red giant , a planetary nebula and finally a white dwarf ) , it will be much hotter than other , older white dwarfs of similar mass 当它（膨胀成红巨星、行星状星云并最后变成白矮星）死亡时，它的温度将比其他质量相近的年老白矮星，要高上许多。
Measuring 2 , 500 miles across and weighing five million trillion trillion pounds , the rock was found on valentine ' s day buried in the core of a white dwarf star in the constellation centaurus 这块石头直径达2500英里，重5 10的42次方磅，藏在人马座中一颗白矮星的中心，是在情人节那天被发现的。
Measuring 2 , 500 miles across and weighing five million trillion trillion pounds , the rock was found on valentine ' s day buried in the core of a white dwarf star in the constellation centaurus 这块石头直径达2500英里，重5 10的42次方磅，藏在人马座中一颗白矮星的中心，是在情人节那天被发现的。
This and the x - ray spectrum , which exhibits a high concentration of iron atoms relative to oxygen and silicon , convincingly show that the ejecta are the remains of an exploded white dwarf star 这幅图连带x射线光谱（显示出了铁相对氧与硅的高度集中）令人信服地说明，抛出的物质是爆发白矮星的残余。
It ' s customary among the stars to quietly burn the hydrogen they are made of , generously giving energy to the void , until they are reduced to a dignified thinness and end their career as modest white dwarfs 恒星，惯常是安静的燃烧组成它们本身的氢，向空间里散发能量，直到达到一定的体积大小，它们作为白矮星的一生就抵达终点。
The evolution of fixed star having something to do with nuclear reaction , the star generally loses partial mass in its final period and finally collapses into compact star ( white dwarf , neutron star or black hole ) 恒星的演化与核反应有关，演化到晚期的恒星一般要损失一部分质量，然后坍缩成致密星(白矮星、中子星或黑洞) 。
Five billion years later , it will evolve along the curve to become a red giant . it will be unstable and eject the shell forming a planetary nebula , then move quickly along the curve to become white dwarf at the lower left 五十亿年之后，太阳将会演化为一颗红巨星，这个阶段的恒星十分不稳定，最终将会把外壳抛掉，形成行星状星云。
After 100 , 000 to one million years , depending on the original mass of the star , it ceases altogether , and the remnant star settles down as an extremely dense and hot white dwarf ? a stellar ember crushed by gravity into a nearly crystalline orb about the size of earth 经过10 ~ 100万年（取决于恒星的原始质量） ，恒星风将骤然终止，而恒星的残留物会演变成极致密高热的白矮星：一种被重力挤压成地球般大小，近乎晶质球体的恒星遗骸。
In a binary system , situations may become more complicated . for example , it could happen that one has evolved to a white dwarf figure to and the other is becoming a red giant . the two could be very closed to each other , maybe only about the earth - moon distance see figure to 在双星系统里，有可能其中一颗恒星已演化为白矮星参阅a图至d图，但另一颗恒星只达红巨星阶段，而它们之间的距离和地月距离差不多参阅d图至f图。
In general , ba stars belong to binary system , and their heavy - element overabundances are due to the accreting material from the companions ( the former tp - agb stars and the present white dwarfs ) . carrying out a series of monte - carlo simulations , the changes of orbital elements of binaries are recalculated for wind accretion scenario of the total angular momentum conservation 研究表明，钡星应该属于双星系统，其重元素超丰来自双星吸积，它的伴星已经经历了s -过程核合成，而且由在以前发生的同其伴星(以前是agb星，现已演化为白矮星)的质量传输过程中，从伴星那里获得了富含重元素的物质，这样造成了钡星的重元素超丰。
