旋涡星系化学动力学模型中的角动量、吸积与径向流
星系天体物理
2016-10-19 v1
摘要
气体吸积和径向流是旋涡星系化学演化的关键要素。它们也紧密相连(由于角动量守恒,吸积驱动径向流),因此应同时建模。我们总结了一种算法,可在相当一般的条件下一致地计算吸积轮廓、径向流和丰度梯度,并描述了其对银河系的示例性应用。我们发现,气相丰度梯度强烈依赖于吸积物质的角动量,并且在外部区域,它们显著受到边界条件选择的影响。
引用
@article{arxiv.1608.04668,
title = {Angular momentum, accretion and radial flows in chemodynamical models of spiral galaxies},
author = {Gabriele Pezzulli and Filippo Fraternali},
journal= {arXiv preprint arXiv:1608.04668},
year = {2016}
}
备注
4 pages, 2 figures. Proceedings of the 592 WE-Heraeus Seminar. To appear in Astronomische Nachricthen, special issue "Reconstructing the Milky Way's history: spectroscopic surveys, asteroseismology and chemodynamical models", Guest Editors C. Chiappini, J. Montalban and M. Steffen