Results 41 to 50 of about 16,096,383 (218)
Spatially resolved spectroscopy of faint star-forming galaxies & their environments in the high redshift universe [PDF]
, 2011 This thesis is concerned with the spectroscopic observations of distant galaxies, 1 < z < 5. The galaxies presented here are intrinsically faint such that their ux is dominated by ordinary star formation rather than galaxy-galaxy merging and/or ...
Hurley, Mairéad
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Tracing the Total Stellar Mass and Star Formation of High-redshift Protoclusters
The Astrophysical Journal, 2023 As the progenitors of present-day galaxy clusters, protoclusters are excellent laboratories to study galaxy evolution. Since existing observations of protoclusters are limited to the detected constituent galaxies at UV and/or infrared wavelengths, the ...
Roxana Popescu +8 more
doaj +1 more source
Optical signatures of high-redshift galaxy clusters [PDF]
The Astrophysical Journal, 1994 We combine an N-body and gasdynamic simulation of structure formation with an updated population synthesis code to explore the expected optical characteristics of a high-redshift cluster of galaxies. We examine a poor (2 keV) cluster formed in a biased, cold dark matter cosmology and employ simple, but plausible, threshold criteria to convert gas into ...
Evrard, August E., Charlot, S.
openaire +2 more sources
Neutral hydrogen surveys for high-redshift galaxy clusters and protoclusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We discuss the possibility of performing blind surveys to detect large-scale features of the universe using 21cm emission. Using instruments with approx. 5'-10' resolution currently in the planning stage, it should be possible to detect virialized galaxy clusters at intermediate redshifts using the combined emission from their constituent galaxies, as ...
Battye, RA, Davies, RD, Weller, J
openaire +4 more sources
The Astronomical Journal, 2022 We give an overview and describe the rationale, methods, and first results from NIRCam images of the JWST “Prime Extragalactic Areas for Reionization and Lensing Science” (PEARLS) project.
Rogier A. Windhorst +84 more
doaj +1 more source
THE FAINT END OF THE CLUSTER-GALAXY LUMINOSITY FUNCTION AT HIGH REDSHIFT [PDF]
The Astrophysical Journal, 2012 9 pages, 4 figures, accepted for publication in the Astrophysical ...
Mancone, Conor +9 more
openaire +2 more sources
The Astrophysical JournalWe explore the relationship between galaxy structure, stellar mass, and local galaxy density in three SpARCS clusters at z ∼ 1.6 and compare with field galaxies from the 3D-HST survey.
Westley Brown +8 more
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Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems
Astronomische Nachrichten, EarlyView.ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley +1 more source
Clustering and redshift-space distortions in QSO and galaxy surveys [PDF]
, 2006 In this thesis, we exploit the potential of existing QSO and galaxy surveys for investigating the nature of the large scale structure in the Universe. A detailed analysis of clustering and redshift- space distortions allows us to constrain cosmological ...
Cruz da Angela, José Antonio +1 more
core
Evidence for a Redshifted Excess in the Intracluster Light Fractions of Merging Clusters at z ∼ 0.8
The Astrophysical Journal LettersThe intracluster light (ICL) fraction is a well-known indicator of the dynamical activity in intermediate-redshift clusters. Merging clusters in the redshift interval 0.18 < z < 0.56 have a distinctive peak in the ICL fractions measured between ∼3800 and
Yolanda Jiménez-Teja +3 more
doaj +1 more source