Results 191 to 200 of about 3,289,332 (235)
Some of the next articles are maybe not open access.
Evolution of Clusters of Galaxies
Publications of the Astronomical Society of Japan, 1993Abstract We have investigated the evolution of clusters of galaxies using direct N-body simulations in which each galaxy is modeled by many particles. We found that the positive correlation between the masses and the distances of galaxies from the center of a cluster develops as the result of perturbations due to close encounters with ...
Yoko Funato +2 more
openaire +1 more source
Chemical Evolution of Galaxies
Annual Review of Astronomy and Astrophysics, 1976The 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 +2 more sources
Astrophysics and Space Science, 2003
The galaxy populations in present-day clusters are distinctly different from those of the field, indicating that environment plays a strong role in galaxy evolution. This review discusses some of the recent observations of moderate to high redshift clusters.
openaire +1 more source
The galaxy populations in present-day clusters are distinctly different from those of the field, indicating that environment plays a strong role in galaxy evolution. This review discusses some of the recent observations of moderate to high redshift clusters.
openaire +1 more source
THE FORMATION AND EVOLUTION OF GALAXIES
The New Cosmology, 2005The past decade has witnessed the establishment of a “standard paradigm” for structure formation in the Universe. It is now universally accepted that the dominant matter component of the Universe is in some form of non-baryonic, weaklyinteracting dark matter. Structure in the dark matter originated from inhomogeneities that were generated shortly after
openaire +2 more sources
Evolution of Galaxies in Clusters
2004In dieser Doktorarbeit studiere ich die Entstehung und Entwicklung von Galaxien in Galaxienhaufen sowohl theoretisch als auch unter Einbeziehung von Beobachtungsdaten. Diese Doktorarbeit gliedert sich in zwei Teile: Einem theoretischen Teil schliesst sich eine Datenanalyse an. Im ersten Kapitel beschreibe ich warum Galaxienhaufen wichtig sind, erklaere
openaire +2 more sources
Publications of the Astronomical Society of the Pacific, 1959
spiral structure is rather more open. In Sc nebulae the nucleus is very small, becoming quite inconspicuous in type Sc+. The spiral arms are very loosely wound and have a patchy structure due to the presence of supergiant stars and emission nebulae.
openaire +1 more source
spiral structure is rather more open. In Sc nebulae the nucleus is very small, becoming quite inconspicuous in type Sc+. The spiral arms are very loosely wound and have a patchy structure due to the presence of supergiant stars and emission nebulae.
openaire +1 more source
GRB Host Galaxies and Galaxy Evolution
EAS Publications Series, 2007Galaxy properties in general and properties of host galaxies of gamma-ray bursts (GRBs) in particular are investigated, using N -body/Eulerian hydrodynamic simulations and the stellar population synthesis model, Starburst99 . We identify simulated galaxies that have optical star formation rate and SFR -to-luminosity ratio similar
S. Courty +2 more
openaire +1 more source
BARRED GALAXIES AND GALAXY EVOLUTION
2007We know from near-infrared imaging that bars are present in more than three quarters of local disk galaxies. Several studies have recently led to the con- clusion that the fraction, as well as the properties, of bars in galaxies have not changed much from a redshift of about unity to the present day.
openaire +1 more source
1976
Galaxies come in a wide variety of shapes and sizes. Until now, it has not really mattered for the purposes of this book just how galaxies differ from one another — we have been primarily concerned to account for their existence, and have considered them as ‘test particles’ which enable us to observe the expansion of the Universe. But if we are to find
openaire +1 more source
Galaxies come in a wide variety of shapes and sizes. Until now, it has not really mattered for the purposes of this book just how galaxies differ from one another — we have been primarily concerned to account for their existence, and have considered them as ‘test particles’ which enable us to observe the expansion of the Universe. But if we are to find
openaire +1 more source