VERTICO与IllustrisTNG：环境对星系气体空间分辨效应
VERTICO and IllustrisTNG: The spatially resolved effects of environment on galactic gas
AI总结：
本研究利用TNG50模拟检验其对室女座星团环境卫星星系气体分布的再现能力，发现虽定量有偏差，但定性上能重现VERTICO观测到的气体截断和中心密度抑制，表明现代宇宙学模拟可用于建模卫星星系演化。
摘要：
先前的研究表明，TNG100模拟定量地再现了在大质量暗晕（即致密环境）中星系的总原子氢和总分子氢气体减少的观测结果。在本信中，我们研究了TNG50模拟在多大程度上再现了类似室女座星团环境对恒星质量$m_* > 10^9\\,{\rm M}_\odot$且恒星形成率${\rm SFR} > 0.05\\,{\rm M}_\odot\\,{\rm yr}^{-1}$的卫星星系气体面密度的分辨效应。我们在模拟中选取与HERACLES和VERTICO巡天中星系相似的星系，并按照数据的通用规范对其进行模拟观测。尽管TNG50未能定量匹配星系中心观测到的气体面密度，但模拟确实定性地再现了VERTICO中在HI和H$_2$中观测到的气体截断和中心密度抑制趋势。这一结果预示着现代宇宙学流体动力学模拟可用于可靠地模拟星团卫星星系的下落后期历史。
英文摘要：
It has been shown in previous publications that the TNG100 simulation quantitatively reproduces the observed reduction in each of the total atomic and total molecular hydrogen gas for galaxies within massive halos, i.e.~dense environments. In this Letter, we study how well TNG50 reproduces the resolved effects of a Virgo-like cluster environment on the gas surface densities of satellite galaxies with $m_* > \! 10^9\,{\rm M}_\odot$ and ${\rm SFR} \! > 0.05\,{\rm M}_\odot\,{\rm yr}^{-1}$. We select galaxies in the simulation that are analogous to those in the HERACLES and VERTICO surveys, and mock-observe them to the common specifications of the data. Although TNG50 does not quantitatively match the observed gas surface densities in the centers of galaxies, the simulation does qualitatively reproduce the trends of gas truncation and central density suppression seen in VERTICO in both HI and H$_2$. This result promises that modern cosmological hydrodynamic simulations can be used to reliably model the post-infall histories of cluster satellite galaxies.
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