Results 231 to 240 of about 195,665 (278)

Comparison of a new type of Dark Matter with the Milky Way and M31 grand rotation curves. [PDF]

Sci Rep
Law BM.
europepmc   +1 more source

A natural mechanism of eukaryotic horizontal gene transfer

Urquhart AS, O'Donnell S, Gluck-Thaler E, Vogan AA.   +3 more
europepmc   +1 more source

Infrared Spectroscopy of Pentagon-Containing PAHs: Indenyl and Fluorenyl Anions and Indenyl Cation. [PDF]

J Phys Chem Lett
Wenzel G, Jiménez-Redondo M, Ončák M, McGuire BA, Brünken S, Caselli P, Jusko P.   +6 more
europepmc   +1 more source

AptERA 2 targets ERA from Staphylococcus aureus and limits GTP hydrolysis

Peñaranda K, Pereira N, Savva O, Petrelli D, Spurio R, Corrigan RM, Milon P.   +6 more
europepmc   +1 more source

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Chemical Evolution of the Galaxy

Annual Review of Astronomy and Astrophysics, 1991
Standard models for the chemical evolution of the Galaxy are reviewed with particular emphasis on the history of the abundance gradients in the disk.
N. Rana
semanticscholar   +3 more sources

Elliptical Galaxy Chemical Evolution [PDF]

, 1999
Conclusions about elliptical and other early-type galaxies come from studies of integrated starlight and studies of giant stars in the nearest galaxies. The abundance distribution for all galaxy types at all radii appears to exhibit a “G dwarf problem” in that the distribution is more strongly peaked than the one-zone closed-box constantyield ...
G. Worthey
semanticscholar   +2 more sources

The chemical evolution of the galaxy

, 2003
F. Matteucci
semanticscholar   +3 more sources

Chemical Evolution of Galaxies

Annual Review of Astronomy and Astrophysics, 1976
The various nucleosynthetic processes needed to account for the formation of the different nuclear species have been described in the previous chapters as well as the location of these nucleosynthetic events. At the beginning of this monograph, the evolution of the matter which constitutes the celestial bodies such as planets, stars and galaxies was ...
Audouze, J., Tinsley, B.M.
openaire   +3 more sources

Chemical evolution of the galaxy

AIP Conference Proceedings, 1995
The article presents data on and discussion of various issues related to element abundance trends in our Galaxy as a function of metallicity [Fe/H]: halo star abundances, evolution of the Galactic supernova rates, the age‐metallicity relationship for disk stars, and halo and disk star formation history and nycleosynthesis timescales. (AIP)
James W. Truran, Francis Timmes
openaire   +2 more sources

The Chemical Evolution of Galaxies

Progress in Particle and Nuclear Physics, 1986
After a brief introduction into the evolution of spiral galaxies, the observational evidence for temporal and spatial abundance variations across the galactic disk is discussed. The theoretical framework of chemical evolution models is summarised, followed by a critical discussion of available constraints. Solutions applying to the special cases of the
openaire   +4 more sources