论文标题
Forever22：原始区域中的星系形成
FOREVER22: galaxy formation in protocluster regions
论文作者
论文摘要
我们提出了新的宇宙学水动力学仿真运动（PC）区域的结果，Forever22：SSA22动机极为过分的地区中星系的形成和发展。模拟使用三种不同的Zoom设置涵盖了众多宇宙学量表，并在父卷中为$（714.2〜 \ rm cmpc）^{3} $：pcr（proto-cluster region; $ v =（28.6〜 {\ rm cmpc}） 10^{6}〜\ rm m _ {\ odot} $和最终红移，$ z _ {\ rm end} = 2.0 $），bcg（最亮的原始群集星系; $ v \ sim; $ v \ sim（10〜 {\ rm cmpc}） 5.0 \ times10^{5}〜\ rm m _ {\ odot} $和$ z _ {\ rm end} = 4.0 $），首先（$ v \ sim（3〜 {\ rm cmpc}） m _ {\ odot} $和$ z _ {\ rm end} = 9.5 $）运行，可以专注于星系形成的不同方面。在PCR运行中，我们遵循10台PC，每个PC都带有$ M _ {\ rm bh} \ ge 10^{9}〜\ rm m _ {\ odot} $。其中一个PC核心显示了$ {\ rm sfr} \ gtrsim 100〜 \ rm m _ {\ odot} 〜yr^{ - 1} $的七个星状星系的空间布置，每个块被尘土飞扬，并将作为flux $ \ g $ 1〜 $ 1〜ymm mm imm imm imm imm imm imm imm imm imm imm imm imm 〜mjy imm m。观察。 BCG运行表明，托管BCG的光环的总SFR受AGN反馈的影响，但超过$ 1000〜 \ rm m _ {\ odot} 〜yr^{ - 1} $ at $ z \ LISHSIM 6 $。第一个运行的决心迷你寄宿人口（POP）III明星，我们表明，在PC地区，主要的恒星人口从流行III到Pop II $ z \ gtrsim 20 $变化，以及第一个带有$ {\ rm sfr} \ rm sfr} \ gtrsim 18〜 \ rm m _ m _ m _ $ _ yr的星系。 10 $。这些可能是詹姆斯·韦伯（James Webb）太空望远镜将来观察的主要目标。我们的模拟成功地重现了观察到的PC中的全球恒星形成活动，并建议PC可以启动宇宙电离。
We present results from a new cosmological hydrodynamics simulation campaign of protocluster (PC) regions, FOREVER22: FORmation and EVolution of galaxies in Extremely-overdense Regions motivated by SSA22. The simulations cover a wide range of cosmological scales using three different zoom set-ups in a parent volume of $(714.2~\rm cMpc)^{3}$: PCR (Proto-Cluster Region; $V= (28.6~{\rm cMpc})^{3} $, SPH particle mass, $m_{\rm{SPH}} = 4.1 \times 10^{6}~\rm M_{\odot}$ and final redshift, $z_{\rm end}=2.0$), BCG (Brightest proto-Cluster Galaxy; $V \sim (10~{\rm cMpc})^{3} $, $m_{\rm SPH} = 5.0\times10^{5}~\rm M_{\odot}$ and $z_{\rm end}=4.0$ ), and First ( $V \sim (3~{\rm cMpc})^{3} $, $m_{\rm SPH} = 7.9 \times 10^{3}~\rm M_{\odot}$ and $z_{\rm end}=9.5$) runs, that allow to focus on different aspects of galaxy formation. In the PCR runs, we follow 10 PCs, each harbouring 1 - 4 SMBHs with $M_{\rm BH} \ge 10^{9}~\rm M_{\odot}$. One of the PC cores shows a spatially close arrangement of seven starburst galaxies with ${\rm SFR} \gtrsim 100~\rm M_{\odot}~yr^{-1}$ each, that are dust-obscured and would appear as submillimeter galaxies with flux $\gtrsim 1~$ mJy at $1.1~ \rm mm$ in observations. The BCG runs show that the total SFRs of haloes hosting BCGs are affected by AGN feedback, but exceed $1000~\rm M_{\odot}~yr^{-1}$ at $z \lesssim 6$. The First runs resolve mini-haloes hosting population (Pop) III stars and we show that, in PC regions, the dominant stellar population changes from Pop III to Pop II at $z \gtrsim 20$, and the first galaxies with ${\rm SFR} \gtrsim 18~\rm M_{\odot}~yr^{-1}$ form at $z \sim 10$. These can be prime targets for future observations with the James Webb Space Telescope. Our simulations successfully reproduce the global star formation activities in observed PCs and suggest that PCs can kickstart cosmic reionization.
