Results 131 to 140 of about 90,689 (284)

The Evolution of Environmental Quenching Timescales to $z\sim1.6$ [PDF]

open access: yes, 2018
Using a sample of 4 galaxy clusters at $1.35 < z < 1.65$ and 10 galaxy clusters at $0.85 < z < 1.35$, we measure the environmental quenching timescale, $t_Q$, corresponding to the time required after a galaxy is accreted by a cluster for it to fully ...
Cerulo, P.   +20 more
core   +3 more sources

Forecasting the Fast Radio Burst Population Observed through Galaxy Cluster Lenses

open access: yesThe Astrophysical Journal
High-redshift fast radio bursts (FRBs) are expected to be extremely powerful probes of our Universe. However, while a significant number of FRBs are expected to exist at high redshift, detecting them has been difficult, with only a handful robustly ...
Mawson W. Sammons   +5 more
doaj   +1 more source

Identification of High-redshift Galaxy Overdensities in GOODS-N and GOODS-S

open access: yesThe Astrophysical Journal
We conduct a systematic search for high-redshift galaxy overdensities at 4.9 < z _spec < 8.9 in both the Great Observatories Origins Deep Survey (GOODS)-N and GOODS-S fields using James Webb Space Telescope/Near-Infrared Camera (JWST/NIRCam) imaging from
Jakob M. Helton   +20 more
doaj   +1 more source

Modelling galaxy clustering at high redshift

open access: yes, 2000
5 pages, LaTeX, contribution to the 'Clustering at high redshift' meeting in Marseille, summer ...
openaire   +2 more sources

Galaxy colours in high-redshift, X-ray-selected clusters – I. Blue galaxy fractions in eight clusters [PDF]

open access: yes, 2001
ABSTRA C T We present initial results from a wide-field, multicolour imaging project, designed to study galaxy evolution in X-ray-selected clusters at intermediate Oz , 0:25U and high redshifts Oz , 0:5U.
B. Fairley   +6 more
semanticscholar   +1 more source

The JWST Advanced Deep Extragalactic Survey: Discovery of an Extreme Galaxy Overdensity at z = 5.4 with JWST/NIRCam in GOODS-S

open access: yesThe Astrophysical Journal
We report the discovery of an extreme galaxy overdensity at z = 5.4 in the GOODS-S field using James Webb Space Telescope (JWST)/NIRCam imaging from JADES and JEMS alongside JWST/NIRCam wide-field slitless spectroscopy from FRESCO.
Jakob M. Helton   +30 more
doaj   +1 more source

The Search for AGN in Distant Galaxy Clusters

open access: yes, 2004
We are undertaking the first systematic study of the prevalence of AGN activity in a large sample of high redshift galaxy clusters. Local clusters contain mainly red elliptical galaxies, and have little or no luminous AGN activity.
Almaini, O.   +3 more
core   +1 more source

Observations of Galaxy Clustering at High Redshift

open access: yes, 1998
This paper reviews the current status of measurements of galaxy clustering at high redshifts (z > 0.3). The focus is on the inherent limitations in the observation and interpretation of the ``evolution of clustering''. It is likely that results from the first attempts to characterize galaxy clustering beyond the ``local'' universe have been ...
openaire   +2 more sources

A 100 Mpc2 Structure Traced by Hyperluminous Galaxies around a Massive z = 2.85 Protocluster

open access: yesThe Astrophysical Journal
We present wide-field mapping at 850 μ m and 450 μ m of the z = 2.85 protocluster in the HS 1549+19 field using the Submillimetre Common-User Bolometer Array 2. Spectroscopic follow-up of 18 bright sources selected at 850 μ m, using the Northern Extended
George C.P. Wang   +11 more
doaj   +1 more source

Towards the first mean pressure profile estimate with the NIKA2 Sunyaev-Zeldovich Large Program [PDF]

open access: yesEPJ Web of Conferences
High-resolution mapping of the hot gas in galaxy clusters is a key tool for cluster-based cosmological analyses. Taking advantage of the NIKA2 millimeter camera operated at the IRAM 30-m telescope, the NIKA2 SZ Large Program seeks to get a high ...
Hanser C.   +53 more
doaj   +1 more source

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