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arXiv 1212.0806astro-ph.GA
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白矮星冷却序列和宇宙年代学

White dwarf cooling sequences and cosmochronology

J. Isern, A. Artigas, E. Garcia-Berro

摘要:

白矮星的演化是一个简单的重力热过程。这意味着它们的光度函数,即每单位热星等和单位体积的白矮星数量作为热星等的函数,是一个单调增加的函数,由于银河系的有限年龄而突然减少。最近的大型巡天观测所获得的白矮星光度函数的精确度和准确度,以及白矮星演化理论模型的质量的提高,使人们有希望在不久的将来重建银河系不同种群的历史。

英文摘要:

The evolution of white dwarfs is a simple gravothermal process. This means that their luminosity function, i.e. the number of white dwarfs per unit bolometric magnitude and unit volume as a function of bolometric magnitude, is a monotonically increasing function that decreases abruptly as a consequence of the finite age of the Galaxy. The precision and the accuracy of the white dwarf luminosity functions obtained with the recent large surveys together with the improved quality of the theoretical models of evolution of white dwarfs allow to feed the hope that in a near future it will be possible to reconstruct the history of the different Galactic populations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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