银河系隆起的可居住性
The Habitability of the Galactic Bulge
摘要：
我们提出了一个新的调查银河系隆起的可居住性，扩大了以前的研究银河系宜居带。我们讨论了现有的知识，在凸起，金属丰度和岩石行星，轨道稳定性和遭遇的可能频率的丰富的行星，以及行星周围的中央超大质量黑洞的可能性。我们专注于两个方面，可以提出实质性的差异，相对于在磁盘中的环境：（一）电离辐射环境，由于中央黑洞的存在和最高速率的超新星爆炸和（ii）推定的lithopanspermia机制恒星系统之间的生命扩散的效率。我们使用分析模型的恒星密度在隆起提供估计的灾难性事件的发生率和扩散的时间尺度的生命在星际距离。
英文摘要：
We present a new investigation of the habitability of the Milky Way bulge, that expands previous studies on the Galactic Habitable Zone. We discuss existing knowledge on the abundance of planets in the bulge, metallicity and the possible frequency of rocky planets, orbital stability and encounters, and the possibility of planets around the central supermassive black hole. We focus on two aspects that can present substantial differences with respect to the environment in the disk: (i) the ionizing radiation environment, due to the presence of the central black hole and to the highest rate of supernovae explosions and (ii) the efficiency of putative lithopanspermia mechanism for the diffusion of life between stellar systems. We use analytical models of the star density in the bulge to provide estimates of the rate of catastrophic events and of the diffusion timescales for life over interstellar distances.
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。
