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arXiv 2005.07588astro-ph.GAastro-ph.CO
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大型近星系的形成

Formation of the Large Nearby Galaxies

P. J. E. Peebles

摘要:

对附近大型星系的观测可以得到特别详细的观察,这表明许多星系在凸起和晕中的恒星光度分数很小。对星系形成的模拟往往会产生相当大比例的恒星粒子在模型的凸起,恒星晕,更普遍的轨道严重不同于圆形。这种情况可能会得到改善的处方上的星系尺度的非高斯初始条件。

英文摘要:

Observations of the nearby large galaxies that can be examined in particularly close detail suggest that many have small stellar luminosity fractions in bulges and haloes. Simulations of galaxy formation tend to produce considerably larger fractions of the star particles in model bulges, stellar haloes, and more generally in orbits seriously different from circular. The situation might be improved by a prescription for non-Gaussian initial conditions on the scale of galaxies.

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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