论文标题
Vertico II：HI识别环境机制对分子气体的影响
VERTICO II: effects of HI-identified environmental mechanisms on molecular gas
论文作者
论文摘要
在这篇Vertico早期科学论文中，我们详细探讨了HI中确定的环境机制如何影响星系星系中分子气体储量的分解特性。使用ALMA ACA（+TP）观测到12CO（2-1）在处女座簇中的51个螺旋星系（其中49个）中，所有这些都包含在Viva HI调查中。样品跨越9 <log m*/msol <11的恒星质量范围。我们研究分子气体径向谱，同性密度半径和表面密度与星系HI缺乏症和形态的函数。全局HI和H2缺陷之间存在弱相关性，分子气体与HI缺乏相关的分解特性：具有较大HI缺陷的星系具有相对较陡的和截断的分子气体径向剖面，这是由于去除低表面密度分子气体上郊区郊区的去除。因此，尽管HI中观察到的环境机制也会影响分子气体储存库，但分子气的总量仅中等减少。
In this VERTICO early science paper we explore in detail how environmental mechanisms, identified in HI, affect the resolved properties of molecular gas reservoirs in cluster galaxies. The molecular gas is probed using ALMA ACA (+TP) observations of 12CO(2-1) in 51 spiral galaxies in the Virgo cluster (of which 49 are detected), all of which are included in the VIVA HI survey. The sample spans a stellar mass range of 9 < log M*/Msol < 11. We study molecular gas radial profiles, isodensity radii, and surface densities as a function of galaxy HI deficiency and morphology. There is a weak correlation between global HI and H2 deficiencies, and resolved properties of molecular gas correlate with HI deficiency: galaxies that have large HI deficiencies have relatively steep and truncated molecular gas radial profiles, which is due to the removal of low-surface density molecular gas on the outskirts. Therefore, while the environmental mechanisms observed in HI also affect molecular gas reservoirs, there is only a moderate reduction of the total amount of molecular gas.
