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We study the chemodynamical evolution of elliptical galaxies and their X-ray and optical properties using high-resolution cosmological simulations. Our Tree N-body/SPH code includes a self-consistent treatment of radiative cooling, star…

Astrophysics · Physics 2007-05-23 Daisuke Kawata , Brad K. Gibson

We study the evolution of disk galaxies within the frame of the cold dark matter (CDM) cosmologies. The hydrodynamics of a centrifugally supported gaseous disk and the growth of a stellar disk are calculated in detail taking into account…

Astrophysics · Physics 2007-05-23 C. Firmani , V. Avila-Reese

A review on numerical simulations of galaxy formation is given. Different numerical methods to solve collisionless and gas dynamical systems are outlined and one particular simulation technique, Smoothed Particle Hydrodynamics, is discussed…

Astrophysics · Physics 2007-05-23 Matthias Steinmetz

We summarize the updated set of multiphase chemical evolution models performed with 44 theoretical radial mass initial distributions and 10 possible values of efficiencies to form molecular clouds and stars. We present the results about the…

Astrophysics of Galaxies · Physics 2015-06-18 Mercedes Mollá

We discuss the main ingredients necessary to build models of chemical evolution of spiral galaxies and in particular the Milky Way galaxy. These ingredients include: the star formation rate, the initial mass function, the stellar yields and…

Astrophysics · Physics 2007-05-23 Francesca Matteucci

The evolution of galactic disks from their early stages is dominated by gasdynamical effects such as gas infall, galactic fountains, and galactic outflows, and further more. The influence of these processes is only understandable in the…

Astrophysics · Physics 2015-05-13 Gerhard Hensler

We present preliminary results on the effects of mergers on the chemical properties of galactic objects in hierarchical clustering scenarios. We adopt a hydrodynamical chemical code that allows to describe the coupled evolution of dark…

Astrophysics · Physics 2007-05-23 S. A. Cora , P. B. Tissera , D. G. Lambas , M. B. Mosconi

The problem of chemo-photometric evolution of late-type galaxies is dealt with relying on prime physical arguments of energetic self-consistency between chemical enhancement of galaxy mass, through nuclear processing inside stars, and…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Alberto Buzzoni

We simulate the formation and chemodynamical evolution of 124 elliptical galaxies by using a GRAPE-SPH code that includes various physical processes associated with the formation of stellar systems: radiative cooling, star formation,…

Astrophysics · Physics 2011-09-30 Chiaki Kobayashi

Using a cosmological galactic evolutionary approach to model the Milky Way, we calculate the star formation history (SFH) of the solar neighborhood. The good agreement we obtain with the observational inferences suggests that our physical…

Astrophysics · Physics 2016-01-27 V. Avila-Reese , C. Firmani , X. Hernandez

We model the star formation history (SFH) and the chemical evolution of the Galactic disk by combining an infall model and a limit-cycle model of the interstellar medium (ISM). Recent observations have shown that the SFH of the Galactic…

Astrophysics · Physics 2009-11-06 H. Hirashita , A. Burkert , T. T. Takeuchi

In our grid of multiphase chemical evolution models (Moll\'a & D\'iaz, 2005), star formation in the disk occurs in two steps: first, molecular gas forms, and then stars are created by cloud-cloud collisions or interactions of massive stars…

Astrophysics of Galaxies · Physics 2017-04-12 Mercedes Mollá , Ángeles I. Díaz , Yago Ascasibar , Brad K. Gibson

Models of chemical evolution of galaxies including the dust are nowadays required to decipher the high-z universe. In a series of three papers we have tackled the problem and set a modern chemical evolution model. In the first paper (Piovan…

Astrophysics of Galaxies · Physics 2011-07-25 L. Piovan , C. Chiosi , E. Merlin , T. Grassi , R. Tantalo , U. Buonomo , L. P. Cassarà

The goal of this investigation is to reconstruct the cosmic star formation rate density history from local observations and in doing so to gain insight into how galaxies might have formed and evolved. A new chemical evolution model is…

Astrophysics · Physics 2009-11-10 F. D. A. Hartwick

I review the basic concepts for the spectrophotometric and chemical evolution of galaxies, contrast various approaches and discuss their respective advantages and shortcomings, both for the interpretation of nearby and high redshift…

Astrophysics · Physics 2007-05-23 U. Fritze-v. Alvensleben

The formation of galaxies in hierarchical cosmogonies is studied using high resolution N-body plus SPH hydrodynamics simulations. The collapse of structure is followed self-consistently from Mpc scale filamentary structures to kpc scale…

Astrophysics · Physics 2007-05-23 F J Summers

Since stellar populations enhance particular element abundances according to the yields and lifetimes of the stellar progenitors, the chemical evolution of galaxies serves as one of the key tools that allows the tracing of galaxy evolution.…

Astrophysics · Physics 2007-05-23 G. Hensler , A. Rieschick

We develop a model to implement metal enrichment in a cosmological context based on the hydrodynamical AP3MSPH code described by Tissera, Lambas and Abadi (1997).The star formation model is based on the Schmidt law and has been modified in…

Astrophysics · Physics 2009-10-31 M. B. Mosconi , P. B. Tissera , S. A. Cora , D. G. Lambas

Spiral galaxies offer a unique opportunity to study the role of star formation in galaxy evolution and to test various theoretical star formation schemes. I review some recent relevant work on the evolution of spiral galaxies. Detailed…

Astrophysics · Physics 2007-05-23 Nikos Prantzos

Galaxy disks are characterised by star formation histories that vary systematically along the Hubble sequence. We study global star formation, incorporating supernova feedback, gas accretion and enriched outflows in disks modelled by a…

Astrophysics · Physics 2009-11-11 Marios Kampakoglou , Joseph Silk