VERTICO and IllustrisTNG: The Spatially Resolved Effects of Environment on Galactic Gas

IF 8.8 1区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Astrophysical Journal Letters Pub Date : 2023-11-01 DOI:10.3847/2041-8213/ad014b

Adam R. H. Stevens, Toby Brown, Benedikt Diemer, Annalisa Pillepich, Lars Hernquist, Dylan Nelson, Yannick M. Bahé, Alessandro Boselli, Timothy A. Davis, Pascal J. Elahi, Sara L. Ellison, María J. Jiménez-Donaire, Ian D. Roberts, Kristine Spekkens, Vicente Villanueva, Adam B. Watts, Christine D. Wilson, Nikki Zabel

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Abstract

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 * > 109 M ⊙ and star formation rate > 0.05 M ⊙ 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 H i and H2. 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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垂直与图解:环境对银河系气体的空间分解效应

在以前的出版物中已经表明，TNG100模拟定量地再现了在大质量晕(即密集环境)内星系中观测到的总原子和总分子氢气的减少。在这篇论文中，我们研究了TNG50如何很好地再现了类处女座星团环境对具有m * >的卫星星系气体表面密度的分辨效应;10 9 M⊙和恒星形成速率>0.05 M⊙yr−1。我们在模拟中选择了与HERACLES和VERTICO调查中类似的星系，并根据数据的共同规范对它们进行模拟观察。虽然TNG50在数量上与观测到的星系中心气体表面密度不匹配，但模拟确实定性地再现了在H i和H 2中VERTICO中看到的气体截断和中心密度抑制的趋势。这一结果表明，现代宇宙流体力学模拟可以用来可靠地模拟星系团卫星星系的落入后历史。

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来源期刊

Astrophysical Journal Letters ASTRONOMY & ASTROPHYSICS-

CiteScore

14.10

自引率

6.30%

发文量

513

审稿时长

2-3 weeks

期刊介绍： The Astrophysical Journal Letters (ApJL) is widely regarded as the foremost journal for swiftly disseminating groundbreaking astronomical research. It focuses on concise reports that highlight pivotal advancements in the field of astrophysics. By prioritizing timeliness and the generation of immediate interest among researchers, ApJL showcases articles featuring novel discoveries and critical findings that have a profound effect on the scientific community. Moreover, ApJL ensures that published articles are comprehensive in their scope, presenting context that can be readily comprehensible to scientists who may not possess expertise in the specific disciplines covered.