Dust in and around galaxies: dust in cluster environments and its impact on gas cooling
Dust in and around galaxies: dust in cluster environments and its impact on gas cooling
复制标题
星系内部和周围的尘埃:星团环境中的尘埃及其对气体冷却的影响
DOI:
10.1093/mnras/stz1644
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发表时间:
2019
影响因子:
4.8
通讯作者:
Kannan, Rahul
中科院分区:
文献类型:
--
作者:
Vogelsberger, Mark;McKinnon, Ryan;O’Neil, Stephanie;Marinacci, Federico;Torrey, Paul;Kannan, Rahul
Simulating the dust content of galaxies and their surrounding gas is challenging due to the wide range of physical processes affecting the dust evolution. Here we present cosmological hydrodynamical simulations of a cluster of galaxies,, including a novel dust model for the moving mesh codearepo. This model includes dust production, growth, supernova-shock-driven destruction, ion-collision-driven thermal sputtering, and high-temperature dust cooling through far-infrared reradiation of collisionally deposited electron energies. Adopting a rather low thermal sputtering rate, we find, consistent with observations, a present-day overall dust-to-gas ratio of ∼2 × 10−5, a total dust mass of, and a dust mass fraction of ∼3 × 10−6. The typical thermal sputtering time-scales withinare around, and increase towards the outer parts of the cluster toat a cluster-centric distance of. The condensation of gas-phase metals into dust grains reduces high-temperature metal-line cooling, but also leads to additional dust infrared cooling. The additional infrared cooling changes the overall cooling rate in the outer parts of the cluster, beyond, by factors of a few. This results in noticeable changes of the entropy, temperature, and density profiles of cluster gas once dust formation is included. The emitted dust infrared emission due to dust cooling is consistent with observational constraints.
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影响因子:
6.5
作者:
J. Melin;J. Bartlett;Z. Cai;G. Zotti;J. Delabrouille;M. Roman;A. Bonaldi
通讯作者:
A. Bonaldi
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
H. Hirashita
通讯作者:
H. Hirashita
影响因子:
4.8
作者:
E. Gjergo;G. Granato;G. Murante;C. Ragone;L. Tornatore;S. Borgani
通讯作者:
S. Borgani
影响因子:
4.8
作者:
McKinnon, Ryan;Vogelsberger, Mark;Torrey, Paul;Marinacci, Federico;Kannan, Rahul
通讯作者:
Kannan, Rahul
DOI:
--
发表时间:
--
期刊:
--
影响因子:
--
作者:
通讯作者:
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