SIMULATION OF THE COSMIC EVOLUTION OF ATOMIC AND MOLECULAR HYDROGEN IN GALAXIES

@article{Obreschkow2009SIMULATIONOT,
  title={SIMULATION OF THE COSMIC EVOLUTION OF ATOMIC AND MOLECULAR HYDROGEN IN GALAXIES},
  author={Danail Obreschkow and Darren J. Croton and Gabriella De Lucia and Sadegh Khochfar and Steve Rawlings},
  journal={The Astrophysical Journal},
  year={2009},
  volume={698},
  pages={1467 - 1484}
}
We present a simulation of the cosmic evolution of the atomic and molecular phases of the cold hydrogen gas in about 3 × 107 galaxies, obtained by postprocessing the virtual galaxy catalog produced by De Lucia & Blaizot on the Millennium Simulation of cosmic structure. Our method uses a set of physical prescriptions to assign neutral atomic hydrogen (H i) and molecular hydrogen (H2) to galaxies, based on their total cold gas masses and a few additional galaxy properties. These prescriptions are… 

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References

SHOWING 1-10 OF 93 REFERENCES

THE ATOMIC-TO-MOLECULAR TRANSITION IN GALAXIES. II: H i AND H2 COLUMN DENSITIES

Gas in galactic disks is collected by gravitational instabilities into giant atomic–molecular complexes, but only the inner, molecular parts of these structures are able to collapse to form stars.

Simulations of the formation, evolution and clustering of galaxies and quasars

It is shown that baryon-induced features in the initial conditions of the Universe are reflected in distorted form in the low-redshift galaxy distribution, an effect that can be used to constrain the nature of dark energy with future generations of observational surveys of galaxies.

The many lives of active galactic nuclei: cooling flows, black holes and the luminosities and colour

We simulate the growth of galaxies and their central supermassive black holes by implementing a suite of semi-analytic models on the output of the Millennium Run, a very large simulation of the

Breaking the hierarchy of galaxy formation

Recent observations of the distant Universe suggest that much of the stellar mass of bright galaxies was already in place at z > 1. This presents a challenge for models of galaxy formation because

Clustering of galaxies in a hierarchical universe - I. Methods and results at z=0

We introduce a new technique for following the formation and evolution of galaxies in cosmological N-body simulations. Dissipationless simulations are used to track the formation and merging of dark

Chemical enrichment of the intracluster and intergalactic medium in a hierarchical galaxy formation model

We use a combination of high-resolution N-body simulations and semi-analytic techniques to follow the formation, the evolution and the chemical enrichment of galaxies in a A cold dark matter (ACDM)

The Many lives of AGN: Cooling flows, black holes and the luminosities and colours of galaxies

We simulate the growth of galaxies and their central supermassive black holes by implementing a suite of semi-analytic models on the output of the Millennium Run, a very large simulation of the

The recycling of gas and metals in galaxy formation: predictions of a dynamical feedback model

We present results of a new feedback scheme implemented in the Munich galaxy formation model. The new scheme includes a dynamical treatment of galactic winds powered by supernova explosions and

Molecular Gas in Elliptical Galaxies: Distribution and Kinematics

I present interferometric images (∼7″ resolution) of CO emission in five elliptical galaxies and nondetections in two others. These data double the number of elliptical galaxies whose CO emission has

Simulations of X-ray clusters

We present simulations of the formation and evolution of galaxy clusters in the Cold Dark Matter cosmogony. Clusters with a wide range of mass were selected from previous N-body models, and were
...