GABE: Galaxy Assembly with Binary Evolution
GABE: Galaxy Assembly with Binary Evolution
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来自黑洞和吸积盘系统的幕式喷流的动力沙碰撞
DOI：
10.1088/1674
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发表时间：
2019
影响因子：
1.8
通讯作者：
Pan Jun
中科院分区：
文献类型：
--
作者：
Jiang Zhen;Wang Jie;Gao Liang;Zhang Fenghui;Guo Qi;Wang Lan;Pan Jun
我们开发了一种新的半分析星系形成模型：带有二元进化（GABE）的星系组件。我们首次通过使用Yunnan-II恒星种群合成模型将二元进化引入星系形成的半分析模型，其中包括各种二元相互作用。当将我们的银河形成模型实施到从仿真的主题树上提取的主题树时，它可以再现大量的观察结果。我们发现，在本地宇宙中，包括二进制进化的模型会稍微降低光学和红外波长的光度，但它在紫外线波长处的发光度大大增加了，尤其是在FUV频段中。与SDSS光条和红外频带相比，所得的光度函数不会发生太大变化，但是预测的颜色更蓝，尤其是在考虑FUV频段时。新模型使我们能够探索与二进制恒星残留物相关的各种高能量事件的物理，例如IA型超新星，短伽马射线爆发和引力波事件，以及它们与宇宙学环境中与宿主星系的关系。
We developed a new semi-analytic galaxy formation model: Galaxy Assembly with Binary Evolution (GABE). For the first time, we introduce binary evolution into semi-analytic models of galaxy formation by using the Yunnan-II stellar population synthesis model, which includes various binary interactions. When implementing our galaxy formationmodel onto themerger trees extracted fromtheMillennium simulation, it can reproduce a large body of observational results. We find that in the local universe, the model including binary evolution reduces the luminosity at optical and infrared wavelengths slightly, but it increases the luminosity at ultraviolet wavelengths significantly, especially in FUV band. The resulting luminosity function does not change very much over SDSS optical bands and infrared band, but the predicted colors are bluer, especially when the FUV band is under consideration. The new model allows us to explore the physics of various high energy events related to the remnants of binary stars, such as type Ia supernovae, short gamma-ray bursts and gravitational wave events, and their relation with host galaxies in a cosmological context.