Results 31 to 40 of about 170,202 (384)

The Morphology of the Active Galactic Nucleus and its Impact on Accretion Flows and Relativistic Jets

open access: yesPhysical Sciences Forum, 2023
The G2 gas cloud motion data and the scarcity of observations on the event horizon-scale distances have challenged the comprehensiveness of the central supermassive black hole model.
Mohammed B. Al-Fadhli
doaj   +1 more source

Galaxy Formation Theory [PDF]

open access: yes, 2010
We review the current theory of how galaxies form within the cosmological framework provided by the cold dark matter paradigm for structure formation. Beginning with the pre-galactic evolution of baryonic material we describe the analytical and numerical
Abadi   +563 more
core   +1 more source

Chemodynamical Modelling of Galaxy Formation and Evolution [PDF]

open access: yesAstrophysics and Space Science, 2002
We present our recently developed 3-dimensional chemodynamical code for galaxy evolution. This code follows the evolution of different galactic components like stars, dark matter and different components of the interstellar medium (ISM), i.e. a diffuse gaseous phase and the molecular clouds.
Berczik, Peter   +3 more
openaire   +3 more sources

UGC 7639: A Dwarf Galaxy in the Canes Venatici I Cloud

open access: yesAdvances in Astronomy, 2015
We want to get insight into the formation mechanism and the evolution of UGC 7639, a dwarf galaxy in the Canes Venatici I Cloud (CVnIC). We used archival multiwavelength data to constrain its global properties. Ultraviolet images show that UGC 7639 inner
L. M. Buson   +3 more
doaj   +1 more source

Anisotropic Satellite Galaxy Quenching: A Unique Signature of Energetic Feedback by Supermassive Black Holes?

open access: yesThe Astrophysical Journal Letters, 2023
The quenched fraction of satellite galaxies is aligned with the orientation of the halo’s central galaxy, such that on average, satellites form stars at a lower rate along the major axis of the central.
Juliana S. M. Karp   +2 more
doaj   +1 more source

Galaxy formation with radiative and chemical feedback [PDF]

open access: yes, 2015
Here we introduce GAMESH, a novel pipeline which implements self-consistent radiative and chemical feedback in a computational model of galaxy formation. By combining the cosmological chemical-evolution model GAMETE with the radiative transfer code CRASH,
de Bennassuti, M.   +5 more
core   +3 more sources

Galaxy formation in the Planck cosmology – I. Matching the observed evolution of star formation rates, colours and stellar masses [PDF]

open access: yes, 2014
We have updated the Munich galaxy formation model to the Planck first-year cosmology, while modifying the treatment of baryonic processes to reproduce recent data on the abundance and passive fractions of galaxies from z = 3 down to z = 0. Matching these
B. Henriques   +7 more
semanticscholar   +1 more source

A Study of Three Galaxy Types, Galaxy Formation, and Warm Dark Matter

open access: yesInternational Journal of Astronomy and Astrophysics International Journal of Astronomy and Astrophysics, 2021
We try to bridge the gap between the theory of linear density-velocity-gravi-tational perturbations in the early universe, and the relaxed galaxies we observe today. We succeed quantitatively for dark matter if dark matter is warm.
B. Hoeneisen
semanticscholar   +1 more source

From Clusters to Proto-Clusters: The Infrared Perspective on Environmental Galaxy Evolution

open access: yesUniverse, 2022
Environment is one of the primary drivers of galaxy evolution; via multiple mechanisms, it can control the critical process of transforming galaxies from star forming to quiescent, commonly termed “quenching”. Despite its importance, however, we still do
Stacey Alberts, Allison Noble
doaj   +1 more source

The “Building Blocks” of Stellar Halos

open access: yesGalaxies, 2017
The stellar halos of galaxies encode their accretion histories. In particular, the median metallicity of a halo is determined primarily by the mass of the most massive accreted object.
Kyle A. Oman   +2 more
doaj   +1 more source

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