Protostellar mergers in protoclusters and the origin of ultra-luminous X-ray sources
, 2005 I suggest that stellar coalescence in mid-size protoclusters (M ~ 10^{3.5} - 10^{4.5} M_sun) is a possible scenario for the formation of ultra-luminous X-ray sources (ULXs).
Soria, R.
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Stellar collisions in accreting protoclusters: a Monte Carlo dynamical study [PDF]
, 2010 We explore the behaviour of accreting protoclusters with a Monte Carlo dynamical code in order to evaluate the relative roles of accretion, two body relaxation and stellar collisions in the cluster evolution.
Bacon +21 more
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Luminous Quasars Do Not Live in the Most Overdense Regions of Galaxies at z~4
, 2017 We present the cross-correlation between 151 luminous quasars ($M_{ \mathrm{UV}} < -26$) and 179 protocluster candidates at $z \sim 3.8$, extracted from the Wide imaging survey ($ \sim 121~ $deg$^2$) performed with a part of the Hyper Suprime-Cam Subaru ...
Akiyama, Masayuki +24 more
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The Astrophysical Journal Letters, 2023 We present the spectroscopic confirmation of a protocluster at z = 7.88 behind the galaxy cluster Abell 2744 (hereafter A2744-z7p9OD). Using JWST NIRSpec, we find seven galaxies within a projected radius of 60 kpc.
Takahiro Morishita +41 more
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From Clusters to Proto-Clusters: The Infrared Perspective on Environmental Galaxy Evolution
Universe, 2022 Environment is one of the primary drivers of galaxy evolution; via multiple mechanisms, it can control the critical process of transforming galaxies from star forming to quiescent, commonly termed “quenching”. Despite its importance, however, we still do
Stacey Alberts, Allison Noble
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Identification of the progenitors of rich clusters and member galaxies in rapid formation at z>2
, 2014 We present the results of near-infrared spectroscopy of H$\alpha$ emitters (HAEs) associated with two protoclusters around radio galaxies (PKS1138-262 at $z$=2.2 and USS1558-003 at $z$=2.5) with Multi-Object Infrared Camera and Spectrograph (MOIRCS) on ...
5858 +11 more
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The candidate cluster and protocluster catalog (CCPC) of spectroscopically identified structures spanning $2.74 < z < 3.71$ [PDF]
, 2015 We have developed a search methodology to identify galaxy protoclusters at $z>2.74$, and implemented it on a sample of $\sim$14,000 galaxies with previously measured redshifts.
Franck, J. R., McGaugh, S. S.
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Subclustering and Star Formation Efficiency in Three Protoclusters in the Central Molecular Zone
The Astrophysical Journal LettersWe present the highest-resolution (∼0 $\mathop{.}\limits^{^{\prime\prime} }$ 04) Atacama Large Millimeter/submillimeter Array 1.3 mm continuum observations so far of three massive star-forming clumps in the Central Molecular Zone (CMZ), namely 20 km s ...
Suinan Zhang +23 more
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MAGAZ3NE: Evidence for Galactic Conformity in z ≳ 3 Protoclusters
The Astrophysical JournalWe examine the quiescent fractions of massive galaxies in six z ≳ 3 spectroscopically confirmed protoclusters in the COSMOS field, one of which is newly confirmed and presented here. We report the spectroscopic confirmation of MAGAZ3NE J100143+023021 at $
Ian McConachie +18 more
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Discovery of a Very Large Structure at Z=3.78
, 2014 We report the discovery of a large-scale structure containing multiple protoclusters at z=3.78 in the Bo\"otes field. The spectroscopic discovery of five galaxies at z=3.783+/-0.002 lying within 1 Mpc of one another led us to undertake a deep narrow- and
Dey, Arjun +7 more
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