Results 231 to 240 of about 108,440 (263)
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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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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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Are High Redshift Galaxies Interacting?
1990I am uncomfortable. I feel in the position of an agnostic who has been asked to praise God close to the beginning of a religious revival meeting. Unfortunately, as far as mergers at high redshifts is concerned, I cannot bring myself to do this. Instead, I propose to present you with evidence that peculiar phenomena are occurring in the most distant ...
G. K. Miley, K. C. Chambers
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High Redshift Radio Galaxies and Galaxy Formation
1989On the basis of the observed properties of newly identified faint radio galaxies, including 0902+34 at z = 3.4, it is argued that most and possibly all of the powerful radio galaxies seen at z ≤ 3.5 are massive galaxies (~ 1012 M ⊙) that formed well prior to z ~ 3.5, at redshifts of at least 5–10.
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Starburst Galaxies at High Redshift
1997The properties of ultraluminous and hyperluminous galaxies are reviewed and it is argued that the majority of the far infrared radiation from these galaxies is powered by starbursts. The evidence that the starburst population is also seen in the sub-mJy radio source-counts is reviewed and a model for the source-counts from radio to X-rays is presented.
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A population of red candidate massive galaxies ~600 Myr after the Big Bang
Nature, 2023Ivo Labbe +2 more
exaly
Galaxy Morphology at High Redshift
2014The morphology of galaxies at high redshift ranges from elliptical and spiral to clumpy, including chains, clump clusters, doubles and tadpoles. Clumpy galaxies observed in the Hubble Ultra Deep Field at redshifts z = 1–5 contain star-forming complexes that are hundreds of times more massive than those forming in local galaxies, reflecting the more ...
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1997
Study of molecular gas in distant galaxies during the last twenty years has followed the steady progress in mm wave receiver sensitivity. In 1975, CO was detected in M 82, NGC 253, and several other galaxies with redshifts of a few hundred kms−1 (Rickard et al. 1975; Solomon & de Zafra 1975).
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Study of molecular gas in distant galaxies during the last twenty years has followed the steady progress in mm wave receiver sensitivity. In 1975, CO was detected in M 82, NGC 253, and several other galaxies with redshifts of a few hundred kms−1 (Rickard et al. 1975; Solomon & de Zafra 1975).
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