Results 231 to 240 of about 88,801 (245)

Local versus Global Time in Early Relativity Theory. [PDF]

Entropy (Basel)
Dieks D.
europepmc   +1 more source

Formation of a low-mass galaxy from star clusters in a 600-million-year-old Universe. [PDF]

Nature
Mowla L, Iyer K, Asada Y, Desprez G, Tan VYY, Martis N, Sarrouh G, Strait V, Abraham R, Bradač M, Brammer G, Muzzin A, Pacifici C, Ravindranath S, Sawicki M, Willott C, Estrada-Carpenter V, Jahan N, Noirot G, Matharu J, Rihtaršič G, Zabl J.   +21 more
europepmc   +1 more source

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The redshift revisited

Astrophysics and Space Science, 1995
We analyse the history of modern cosmology based on the redshift phenomenon and on the cosmic background radiation (CBR). We show the models of different authors for the interpretation of the redshift and how the tired light models predicted the correct value of 2.7 K temperature previous to Gamow and collaborators.
Marcos Cesar Danhoni Neves, André Koch Torres Assis   +1 more
openaire   +2 more sources

An ultraluminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30

Nature, 2015
So far, roughly 40 quasars with redshifts greater than z = 6 have been discovered. Each quasar contains a black hole with a mass of about one billion solar masses (109 ). The existence of such black holes when the Universe was less than one billion years
Xue-bing Wu, Feige Wang, Xiaohui Fan, W. Yi, W. Zuo, F. Bian, Linhua Jiang, I. McGreer, Ran Wang, Jinyi Yang, Qian Yang, D. Thompson, Y. Beletsky   +12 more
semanticscholar   +1 more source

On the Nature of the Redshifts of the Twin Quasars with Discrepant Redshifts

Publications of the Astronomical Society of Australia, 1991
AbstractWe examine the nature of the redshifts of twin quasars with discrepant redshifts (θ < 100 arcsec, Δz ≥ 0.5) by considering their Hubble diagram. If such twins are physically associated one expects a large scatter in their Hubble diagram. However, we find a statistically significant linear correlation between log (cz) and Vc magnitudes of ...
A. K. Sapre, V. D. Mishra
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Redshift of OQ172

Nature, 1973
Comments on a recently discovered second QSO with a redshift greater than 3. From a study of a composite spectrum of OQ172 formed by adding data from spectra obtained on different nights two strong emission features near 5540 and 7015 A are noted and are identified with Lyman alpha 1216 A and CIV 1549 A.
E. M. Burbidge, L. B. Robinson, Jack A. Baldwin, E. J. Wampler   +3 more
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Chemical abundances in high-redshift galaxies: a powerful new emission line diagnostic

, 2016
This 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, L. Kewley, R. Sutherland, D. Nicholls   +3 more
semanticscholar   +1 more source

Redshift of OH471

Nature, 1973
THE purpose of this letter is to draw attention to the very high redshift, z = 3.40, of the QSO OH471.
Peter A. Strittmatter, R. F. Carswell
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