Results 181 to 190 of about 37,989 (204)
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Evolution of Galaxy Cluster and Primordial Nucleosynthesis

1991
The model of galaxy cluster evolution is presented, matter exchange between galaxies and intergalactic medium and time dependence of initial mass function being taken into account. In all the model versions corresponding to available observed data primordial deuterium abundance in a galaxy decreases by a factor 2 to the present time, that enables to ...
V. V. Chuvenkov   +2 more
openaire   +1 more source

Primordial and Stellar Nucleosynthesis Chemical Evolution of Galaxies

AIP Conference Proceedings, 2010
Following a brief introduction to early Universe cosmology, we present in some detail the results of primordial nucleosynthesis. Then we summarize the basic theory of nuclear reactions in stars and sketch the general rules of stellar evolution. We shortly review the subject of supernova explosions both by core collapse in massive stars (Type II) and ...
Cesare Chiosi   +3 more
openaire   +1 more source

Primordial Stars — The Precursors to Galaxy Formation

1983
We have already heard that a knowledge of how galaxies form gives us information about the early universe. It is also true that a knowledge of how and when the first stars formed gives us information about how galaxies formed, and hence about the early universe. The theory of galaxy formation has undergone a big advance in the last decade.
openaire   +1 more source

Black Hole Accretion in Primordial Galaxies

2020
Supermassive black holes (SMBHs) with masses up to 1010M⊙ are thought to power the emission from quasars and Active Galactic Nuclei. Surprisingly, these extremely massive, compact objects are already in place within the first billion years from the Big Bang, or redshift z ≥ 6.
openaire   +1 more source

Primordial power spectrum in light of JWST observations of high redshift galaxies

Monthly Notices of the Royal Astronomical Society: Letters, 2023
Priyank Parashari, Ranjan Laha
exaly  

How primordial magnetic fields shrink galaxies

Monthly Notices of the Royal Astronomical Society, 2020
Sérgio Martin-Alvarez   +2 more
exaly  

Contamination of Primordial Helium in Galaxies

1996
GARY STEIGMAN   +2 more
openaire   +1 more source

A new determination of the primordial helium abundance using the analyses of H ii region spectra from SDSS

Monthly Notices of the Royal Astronomical Society, 2021
V V Klimenko, S A Balashev, A V Ivanchik
exaly  

Improved constraints from ultra-faint dwarf galaxies on primordial black holes as dark matter

Monthly Notices of the Royal Astronomical Society, 2020
Jakob Stegmann   +2 more
exaly  

Exploring the origin of ultra-diffuse galaxies in clusters from their primordial alignment

Monthly Notices of the Royal Astronomical Society: Letters, 2020
Yu Rong   +2 more
exaly  

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