The Evolving Effect of Cosmic Web Environment on Galaxy Quenching
The Evolving Effect of Cosmic Web Environment on Galaxy Quenching
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DOI：
10.3847/1538-4357/acd11c
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发表时间：
2023-03
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通讯作者：
Farhanul Hasan;J. Burchett;Alyssa Abeyta;Doug Hellinger;Nir Mandelker;J. Primack;S. Faber;D. Koo;Oskar Elek;D. Nagai
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作者：
Farhanul Hasan;J. Burchett;Alyssa Abeyta;Doug Hellinger;Nir Mandelker;J. Primack;S. Faber;D. Koo;Oskar Elek;D. Nagai
我们通过使用分散框架来重建每个快照中的宇宙网络，研究宇宙网络结构如何影响插图（TNG100）宇宙学模拟中的星系淬火。 <SSFR>）和中位气体分数（<f在这些距离上1，与<ssfr>的单调下降相反日志（m*/m⊙）<10个星系，d node和d fil，log（m*/m⊙）≥10个星系 - 均带有内侧和卫星，在<ssfor> d node≲0.2 0.2 mpc的<ssfr>上，这是<ssfor> ploss quest的范围。在节点附近的密集环境和坡度气体中，通过快速气体剥离而束缚在较早的时间内，宇宙网络结构有效地将冷气引导到大多数星系中。
We investigate how cosmic web structures affect galaxy quenching in the IllustrisTNG (TNG100) cosmological simulations by reconstructing the cosmic web within each snapshot using the DisPerSE framework. We measure the comoving distance from each galaxy with stellar mass log(M*/M⊙)≥8 to the nearest node (d node) and the nearest filament spine (d fil) to study the dependence of both the median specific star formation rate (〈sSFR〉) and the median gas fraction (〈f gas〉) on these distances. We find that the 〈sSFR〉 of galaxies is only dependent on the cosmic web environment at z < 2, with the dependence increasing with time. At z ≤ 0.5, 8≤log(M*/M⊙)<9 galaxies are quenched at d node ≲ 1 Mpc, and have significantly suppressed star formation at d fil ≲ 1 Mpc, trends driven mostly by satellite galaxies. At z ≤ 1, in contrast to the monotonic drop in 〈sSFR〉 of log(M*/M⊙)<10 galaxies with decreasing d node and d fil, log(M*/M⊙)≥10 galaxies—both centrals and satellites—experience an upturn in 〈sSFR〉 at d node ≲ 0.2 Mpc. Much of this cosmic web dependence of star formation activity can be explained by an evolution in 〈f gas〉. Our results suggest that in the past ∼10 Gyr, low-mass satellites are quenched by rapid gas stripping in dense environments near nodes and gradual gas starvation in intermediate-density environments near filaments. At earlier times, cosmic web structures efficiently channeled cold gas into most galaxies. State-of-the-art ongoing spectroscopic surveys such as the Sloan Digital Sky Survey and DESI, as well as those planned with the Subaru Prime Focus Spectrograph, JWST, and Roman, are required to test our predictions against observations.