ELUCID. IV. Galaxy Quenching and its Relation to Halo Mass, Environment, and 
Assembly Bias

Wang, Huiyuan; Mo, H. J.; Chen, Sihan; Yang, Yang; Yang, Xiaohu; Wang, Enci; van den Bosch, Frank C.; Jing, Yipeng; Kang, Xi; Lin, Weipeng; Lim, S. H.; Huang, Shuiyao; Lu, Yi; Li, Shijie; Cui, Weiguang; Zhang, Youcai; Tweed, Dylan; Wei, Chengliang; Li, Guoliang; Shi, Feng

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

ELUCID. IV. Galaxy Quenching and its Relation to Halo Mass, Environment, and Assembly Bias

MPS-Authors

Wang, Huiyuan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mo, H. J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chen, Sihan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yang, Yang
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yang, Xiaohu
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wang, Enci
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

van den Bosch, Frank C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Jing, Yipeng
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kang, Xi
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lin, Weipeng
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lim, S. H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Huang, Shuiyao
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lu, Yi
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Li, Shijie
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cui, Weiguang
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zhang, Youcai
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tweed, Dylan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wei, Chengliang
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Li, Guoliang
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Shi, Feng
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2018ApJ...852...31W
(Any fulltext)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Wang, H., Mo, H. J., Chen, S., Yang, Y., Yang, X., Wang, E., et al. (2018). ELUCID. IV. Galaxy Quenching and its Relation to Halo Mass, Environment, and Assembly Bias. The Astrophysical Journal, 852.

Cite as: https://hdl.handle.net/21.11116/0000-0005-CA5E-F

Abstract

We examine the quenched fraction of central and satellite galaxies as a function of galaxy stellar mass, halo mass, and the matter density of their large-scale environment. Matter densities are inferred from our ELUCID simulation, a constrained simulation of the local universe sampled by SDSS, while halo masses and central/satellite classification are taken from the galaxy group catalog of Yang et al. The quenched fraction for the total population increases systematically with the three quantities. We find that the “environmental quenching efficiency,” which quantifies the quenched fraction as a function of halo mass, is independent of stellar mass. And this independence is the origin of the stellar mass independence of density-based quenching efficiency found in previous studies. Considering centrals and satellites separately, we find that the two populations follow similar correlations of quenching efficiency with halo mass and stellar mass, suggesting that they have experienced similar quenching processes in their host halo. We demonstrate that satellite quenching alone cannot account for the environmental quenching efficiency of the total galaxy population, and that the difference between the two populations found previously arises mainly from the fact that centrals and satellites of the same stellar mass reside, on average, in halos of different mass. After removing these effects of halo mass and stellar mass, there remains a weak, but significant, residual dependence on environmental density, which is eliminated when halo assembly bias is taken into account. Our results therefore indicate that halo mass is the prime environmental parameter that regulates the quenching of both centrals and satellites.