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Showing 1 to 8 of 8 for “"Mgii"”.
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Large Quasar Groups at Redshift ~ 2
… catalogues; to probe the high-z LQGs with MgII absorbers from the Gemini data. Using an algorithm for single-linkage hierarchical clustering, four LQGs have been found in the redshift range of 1.8 - 2.5. These four groups were tested for statistical significance using a convex hull …
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A study of the absorption characteristics of gaseous galaxy halos in the local Universe
… metals with a particular focus on SiII and MgII. Due to the similarity in the ionization properties of SiII and MgII, we are able to estimate the contribution of HVC-like halo structures to the cross section of intervening strong MgII absorbers at z = 0. Our study implies that only the most …
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Identifying intervening absorption systems for use as cosmological probes
… a database of absorption systems, primarily the MgII, CIV doublets using the spectra of tens of thousands of quasars available from the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) and possibly 2dF Quasar Redhshift (2QZ) survey, covering a redshift range of 0 .c z < 2.3 and detected at …
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Quasars at the High Redshift Frontier
… the occurrence rates of CIV, CII, SiII, FeII and MgII, producing the first measurement at z>6 for many of these ions. I find that the incidence of CIV systems is consistent with a continuing decline in the total mass density of highly ionized metals, a trend seen at lower redshifts. The ratio …
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Development of an antirheumatic drug
… Lastly the ligands and the carr, CuII, MgII and ZnII metalions were monitored in vitro using the computer blood plasma model.
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Spectroscopic studies of star-forming galaxies and the intergalactic medium in the early Universe
… to typical EoR galaxies, revealing Lyman-α and MgII emission lines that may indicate the leakage of ionising photons into the IGM. Secondly, focussing on far-infrared and rest-frame UV observations of five UV-bright, star-forming galaxies at redshift 7 obtained with ALMA and HST respectively, I …
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High redshift star-forming galaxies in absorption and emission
… doublets. The final catalog includes ∼ 16700 Mgii absorption line systems in the redshift range 0.36 ≤ z ≤ 2.28. Measurements of the absorption redshift and rest equivalent widths of the Mg ii doublet as well as select metal lines are available in the catalog. This is the largest publicly …
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The Mass-Pitch Angle Relation for Three High Redshift Active Galaxies Selected from the GOODS Field
<p>As we continue to investigate and ponder the heavens, we have come to realize the presence of highly energetic gravitational wells at the center of all galaxies. These supermassive black holes at a galaxies nucleus formed in the company of the other features making up the galaxy, particularly …