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Star-formation Property of High Redshift Galaxies in Clusters: Perceptive View from Observation and Simulation

Published online by Cambridge University Press:  09 June 2023

Seong-Kook Lee Open the ORCID record for Seong-Kook Lee [Opens in a new window] ,
Myungshin Im ,
Eunhee Ko ,
Changbom Park ,
Juhan Kim ,
Jaehyun Lee  and
Minhee Hyun
Seong-Kook Lee
Affiliation:
SNU Astronomy Research Center, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea Astronomy Program, Department of Physics & Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
Myungshin Im
Affiliation:
SNU Astronomy Research Center, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea Astronomy Program, Department of Physics & Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
Eunhee Ko
Affiliation:
SNU Astronomy Research Center, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea Astronomy Program, Department of Physics & Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
Changbom Park
Affiliation:
Korea Institute for Advanced Study, 85 Hoegi-ro, Dongdaemun-gu, Seoul 02455, Republic of Korea
Juhan Kim
Affiliation:
Korea Institute for Advanced Study, 85 Hoegi-ro, Dongdaemun-gu, Seoul 02455, Republic of Korea
Jaehyun Lee
Affiliation:
Korea Institute for Advanced Study, 85 Hoegi-ro, Dongdaemun-gu, Seoul 02455, Republic of Korea
Minhee Hyun
Affiliation:
Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea
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Abstract

The evolution of star formation properties of galaxies depends on the environment where galaxies reside, and generally star formation of galaxies in dense environment decreases more quickly. Interestingly, the star formation property of high-redshift galaxies clusters vary largely even though they are at similar redshift. We have found that the large-scale environment surrounding each galaxy cluster can contribute to make this cluster-by-cluster variation. This correlation is found in the results from observational data as well as in the simulations of galaxy formation. We suggest the ‘Web-feeding model’ to explain this trend. Star-forming galaxies falling into the galaxy cluster from surrounding large-scale structure make the quiescent galaxy fraction of the cluster lower than relatively isolated clusters.

Keywords

star formationgalaxy clusterhigh redshiftlarge scale structure
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S373: Resolving the Rise and Fall of Star Formation in Galaxies , August 2021 , pp. 260 - 263
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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