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High-redshift galaxy populations
Nature, 2006We now see many galaxies as they were only 800 million years after the Big Bang, and that limit may soon be exceeded when wide-field infrared detectors are widely available. Multi-wavelength studies show that there was relatively little star formation at very early times and that star formation was at its maximum at about half the age of the Universe ...
Esther M, Hu, Lennox L, Cowie
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Chemical abundances in high-redshift galaxies: a powerful new emission line diagnostic
, 2016This Letter presents a new, remarkably simple diagnostic specifically designed to derive chemical abundances for high redshift galaxies. It uses only the Hα$\mathrm{H}\alpha$, [N ii] and [S ii] emission lines, which can usually be observed in a single ...
M. Dopita +3 more
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1997
That we are in an evolving Cosmo where each single object, and the Universe as a whole, evolve in time has been accepted since a long time. The great excitement in current cosmology, as mentioned also by J. Peebles sometime before 1983, is that we have opened an observational and theoretical window in the world of mathematical models and we are now ...
Guido Chincarini, Paolo Saracco
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That we are in an evolving Cosmo where each single object, and the Universe as a whole, evolve in time has been accepted since a long time. The great excitement in current cosmology, as mentioned also by J. Peebles sometime before 1983, is that we have opened an observational and theoretical window in the world of mathematical models and we are now ...
Guido Chincarini, Paolo Saracco
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Symposium - International Astronomical Union, 2005
Mapping the history of star formation requires combining observations at many wavelengths. The most dramatic episodes of star formation occurred in high-redshift (z > 1) galaxies obscured by dust. These galaxies can be seen at submillimeter wavelengths.
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Mapping the history of star formation requires combining observations at many wavelengths. The most dramatic episodes of star formation occurred in high-redshift (z > 1) galaxies obscured by dust. These galaxies can be seen at submillimeter wavelengths.
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High Redshift Lyman Break Galaxies
2006Two of the most outstanding issues in modern astrophysics are what reionized the Universe and how did the first objects form. Observations of galaxies selected through the Lyman-Break technique indicate that UV photon output at the end of reionization was dominated by relatively faint low mass galaxies and not AGN.
Lehnert, M., Bremer, M.
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Annual Review of Astronomy and Astrophysics, 1993
High redshift galaxies that host powerful radio sources are examined. An overview is presented of the content of radio surveys: 3CR and 3CRR, 4C and 4C/USS, B2/1 Jy, MG, MRC/1Jy, Parkes/PSR, B3, and ESO Key-Project. Narrow-line radio galaxies in the visible and UV, the source of ionization and excitation of the emission lines, emission-line ...
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High redshift galaxies that host powerful radio sources are examined. An overview is presented of the content of radio surveys: 3CR and 3CRR, 4C and 4C/USS, B2/1 Jy, MG, MRC/1Jy, Parkes/PSR, B3, and ESO Key-Project. Narrow-line radio galaxies in the visible and UV, the source of ionization and excitation of the emission lines, emission-line ...
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1992
A consistent picture of large-scale structure appears to be emerging from different types of observations including the spatial distribution of galaxies, clusters of galaxies, narrow pencil-beam surveys, and quasars. I describe these observations below. A network of large-scale superclusters, up to ~ 150 Mpc in scale, is suggested.
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A consistent picture of large-scale structure appears to be emerging from different types of observations including the spatial distribution of galaxies, clusters of galaxies, narrow pencil-beam surveys, and quasars. I describe these observations below. A network of large-scale superclusters, up to ~ 150 Mpc in scale, is suggested.
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Bulge Growth Through Disc Instabilities in High-Redshift Galaxies
, 2015The role of disc instabilities, such as bars and spiral arms, and the associated resonances, in growing bulges in the inner regions of disc galaxies have long been studied in the low-redshift nearby Universe. There it has long been probed observationally,
F. Bournaud
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The High Redshift 3CR Radio Galaxies: CD Galaxies in High Redshift Clusters
1998The old stellar populations of the 3CR radio galaxies at redshifts z ∼ 1 have been investigated using the HST and UKIRT. The radial intensity profiles of the galaxies are well matched out to radii τ ∼ 35kpc by de Vaucouleurs’ law with no requirement for an additional point source in all but two cases (3C22 and 3C41).
P. N. Best +2 more
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Cluster Galaxies at High Redshift
1988Modern CCD instrumentation has made it possible to obtain photometric and spectroscopic data on normal galaxies in clusters at redshifts up to nearly unity. In this paper we discuss a survey for such clusters and preliminary spectroscopic results for galaxies in a sample of 7 clusters near redshift 0.5, and another at z=0.75.
James E. Gunn, Alan Dressier
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