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The realm of the galaxy protoclusters [PDF]
Astronomy and Astrophysics Review, 2016 Reference corrected and text updated to match published ...
Roderik A Overzier
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What are protoclusters? – Defining high-redshift galaxy clusters and protoclusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We explore the structures of protoclusters and their relationship with high redshift clusters using the Millennium Simulation combined with a semi-analytic model. We find that protoclusters are very extended, with 90 per cent of their mass spread across $\sim35\,h^{-1}{\rm Mpc}$ comoving at $z=2$ ($\sim30\, \rm{arcmin}$).
Nina A Hatch, Elizabeth A Cooke
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Star formation and chemical enrichment in protoclusters
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT We examine star formation and chemical enrichment in protoclusters (PCs) using cosmological zoom-in hydrodynamic simulations. We find that the total star formation rate (SFR) in all PC ($\gt 10^{14.4}\, h^{-1}$ M⊙) reaches $\gt 10^4\, \mathrm{M}_\odot \mathrm{yr}^{-1}$ at z = 3, equivalent to the observed PCs.
Keita Fukushima, Kentaro Nagamine
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Identifying protoclusters in distant universe
Astronomische Nachrichten, 2021AbstractProperties of galaxies, such as color, age, and star formation activity, appear to be associated with the environment in which they are immersed. To investigate how the environment‐galaxy relation is established, we study protoclusters, which are numerically dense environments of galaxies in the early Universe, and which give rise to galaxy ...
Mariana Rubet da Costa +1 more
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2022
The Λ cold dark matter (ΛCDM) model accurately reproduces many notable observations of our Universe, such as the existence of galaxy clusters embedded in a cosmic web. However, there remain many open questions about the physics governing baryons on galaxy cluster scales that the ΛCDM model cannot address, such as how star-formation is triggered and ...
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The Λ cold dark matter (ΛCDM) model accurately reproduces many notable observations of our Universe, such as the existence of galaxy clusters embedded in a cosmic web. However, there remain many open questions about the physics governing baryons on galaxy cluster scales that the ΛCDM model cannot address, such as how star-formation is triggered and ...
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Quasars as protoclusters of galaxies
Astrophysics, 1972A hypothesis is put forward according to which dense bodies (QSG), which occasionally transform into quasars, decay into components and their subsequent fragmentation results in the formation of groups and clusters of galaxies. Recurrent nonthermal radio emission continues during all the subsequent stages of fragmentation and evolution of the QSG's ...
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Galaxy protocluster candidates at 1.6
2010We present a study of protoclusters associated with high redshift radio galaxies. We imaged MRC1017-220 (z=1.77) and MRC0156-252 (z=2.02) using the near-infrared wide-field (7.5'x7.5') imager VLT/HAWK-I in the Y, H and Ks bands. We present the first deep Y-band galaxy number counts within a large area (200 arcmin2).
Galametz, Audrey +12 more
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Massive Protostars and Small Protoclusters
2008Recent investigations of massive protostellar candidates in the near-infrared (NIR) wavelengths reveal several 2μm visible embedded clusters, NIR counterparts to massive star precursors and H2 emission in the shape of rings and flared disks around the massive protostars.
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