Results 11 to 20 of about 108,440 (263)
High redshift radio galaxies [PDF]
SPIE Proceedings, 2000 There is considerable evidence that powerful radio quasars and radio galaxies are orientation-dependent manifestations of the same parent population: massive spheroids containing correspondingly massive black holes.
Fosbury, R. A. E.
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Very High-Redshift Lensed Galaxies [PDF]
Proceedings of the International Astronomical Union, 2004 We review in this paper the main results recently obtained on the identification and study of very high-z galaxies usinglensing clusters as natural gravitational telescopes.
Borgne, J. - F. Le +4 more
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Morphological classification of high redshift galaxies [PDF]
Astrophysics and Space Science, 2000 4 pages, 3 encapsulated figures. Proceedings of the Euroconference "The Evolution of Galaxies.I- Observational clues." held in Granada (Spain), 23-27 May, 2000.
E. Pignatelli, G. Fasano
openalex +4 more sources
Finding High-redshift Galaxies with JWST [PDF]
The Astrophysical Journal, 2021 Abstract One of the primary goals for the upcoming James Webb Space Telescope is to observe the first galaxies. Predictions for planned and proposed surveys have typically focused on average galaxy counts, assuming a random distribution of galaxies across the observed field.
Charles L. Steinhardt +2 more
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High Redshift Radio Galaxies [PDF]
Symposium - International Astronomical Union, 1996 One hundred years after G. Marconi recorded radio waves over a distance of more than 1000 m, the most sensitive radio telescopes are able to detect the radio emission from light travel distances at least 1.4 × 1023 times greater. The electromagnetic waves from these distant objects are red shifted by Δλ/λ = z > 4. It is not the mere distance of high
K. Meisenheimer, H. Hippelein, M. Neeser
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Galaxy formation at high redshifts [PDF]
Nature, 1996 Sensitive optical surveys have revealed a large population of `faint blue galaxies' which are believed to be young galaxies, observed close to their time of formation. But there has been considerable uncertainty regarding the epochs at which these galaxies are observed, owing to the difficulties inherent in determining spectroscopic redshifts for very ...
Metcalfe, N. +4 more
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Dust in High‐Redshift Galaxies [PDF]
The Astrophysical Journal, 1997 Measurements of Zn and Cr abundances in damped Lyman alpha systems at absorption redshifts between 0.692 and 3.390 show that metals and dust are much less abundant in high redshift galaxies than in the Milky Way today. We conclude that the overall degree of metal enrichment of DLA galaxies approximately 13.5 Gyr ago is 1/15 solar.
Pettini, Max +3 more
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Large Disklike Galaxies at High Redshift [PDF]
The Astrophysical Journal, 2003 LaTeX, 5 pages, 2 figures, 1 table.
Labbé, Ivo +13 more
openaire +5 more sources
High-Redshift Radio Galaxies [PDF]
Highlights of Astronomy, 1995 Radio galaxies are unique cosmological probes. As with radio-loud quasars, the presence of luminous radio continuum and optical line emission enable radio galaxies to be observed and recognized at large distances, up to z = 4.2. However, unlike the situation for most quasars, their optical emission can be spatially resolved from the ground and studied ...
openaire +1 more source
High-redshift lensed galaxies [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractWe present the results obtained from our deep survey of lensing clusters aimed at constraining the abundance of star-forming galaxies at z∼6–11.
Pelló, Roser +10 more
openaire +2 more sources