Results 31 to 40 of about 1,021 (168)
SPECTROSCOPIC CONFIRMATION OF A PROTOCLUSTER AT z ≈ 3.786 [PDF]
The Astrophysical Journal, 2016 ABSTRACT We present new observations of the field containing the z = 3.786 protocluster PC 217.96+32.3. We confirm that it is one of the largest known and most overdense high-redshift structures. Such structures are rare even in the largest cosmological simulations. We used the Mayall/MOSAIC1.1 imaging camera to image a 1.°2 × 0.°6 area (
Arjun Dey +7 more
openaire +4 more sources
FRAGMENTATION OF MOLECULAR CLUMPS AND FORMATION OF A PROTOCLUSTER [PDF]
The Astrophysical Journal, 2015 Sufficiently massive clumps of molecular gas collapse under self-gravity and fragment to spawn a cluster of stars that have a range of masses. We investigate observationally the early stages of formation of a stellar cluster in a massive filamentary infrared dark cloud, G28.34+0.06 P1, in the 1.3mm continuum and spectral line emission using the ALMA ...
Qizhou Zhang +3 more
openaire +2 more sources
Protoclusters in the ΛCDM Universe
The Astrophysical Journal, 2006 We compare the highly clustered populations of very high redshift galaxies with protoclusters identified numerically in a standard ΛCDM universe (Ω0 = 0.3, λ0 = 0.7) simulation. We evolve 2563 dark matter particles in a comoving box of side 150 h-1 Mpc.
Tamon Suwa, Asao Habe, Kohji Yoshikawa
openaire +1 more source
A giant protocluster of galaxies at redshift 5.7 [PDF]
Nature Astronomy, 2018 Galaxy clusters trace the largest structures of the Universe and provide ideal laboratories for studying galaxy evolution and cosmology. Clusters with extended X-ray emission have been discovered at redshifts up to z ~ 2.5. Meanwhile, there has been growing interest in hunting for protoclusters, the progenitors of clusters, at higher redshifts.
Jiang, L. +15 more
openaire +4 more sources
Protoclusters at 𝓏 = 5.7: a view from the MultiDark galaxies [PDF]
, 2020 Protoclusters, which will yield galaxy clusters at lower redshift, can provide valuable information on the formation of galaxy clusters. However, identifying progenitors of galaxy clusters in observations is not an easy task, especially at high redshift.
Dave, Romeel +6 more
core +1 more source
Competitive accretion in the protocluster G10.6−0.4? [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 9 pages, 9 figures, 2 tables, Submitted to ...
Liu, Tie +4 more
openaire +2 more sources
SCUBA-2 overdensities associated with candidate protoclusters selected from Planck data [PDF]
, 2020 We measure the 850-μm source densities of 46 candidate protoclusters selected from the Planck High-z catalogue (PHz) and the Planck Catalogue of Compact Sources (PCCS) that were followed up with Herschel -SPIRE and SCUBA-2.
Ibar, Eduardo
core +3 more sources
The Astrophysical Journal Letters, 2023 The protoclusters in the epoch of reionization, traced by galaxy overdensity regions, are ideal laboratories for studying the process of stellar assembly and cosmic reionization.
T. Hashimoto +22 more
doaj +1 more source
The impact of protocluster environments atz= 1.6 [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 Monthly Notices of the Royal Astronomical Society, 464 (1)
Hatch, N. A. +6 more
openaire +5 more sources
Environmental Impacts on the Rest-frame UV Size and Morphology of Star-forming Galaxies at z ∼ 2
The Astrophysical Journal, 2023 We report the measurement of rest-frame UV size and morphology of H α -emission-selected star-forming galaxies (HAEs) in four protoclusters at z ∼ 2 (PKS 1138-262, USS 1558-003, PHz G237.0+42.5, and CC 2.2) using archival Hubble Space Telescope Advanced ...
Abdurrahman Naufal +3 more
doaj +1 more source