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Related papers: Disk Galaxy Formation in a LambdaCDM Universe

200 papers

We present adaptive optics assisted integral field spectroscopy of nine Halpha-selected galaxies at z=0.84--2.23 selected from the HiZELS narrow-band survey. Our observations map the star-formation and kinematics of these representative…

Cosmology and Nongalactic Astrophysics · Physics 2012-11-12 Mark Swinbank , Ian Smail , David Sobral , Tom Theuns , Philip Best , Jim Geach

We combine the latest observations of disk galaxy photometry and rotation curves at moderate redshift from the FORS Deep Field (FDF) with simple models of chemical enrichment. Our method describes the buildup of the stellar component…

Astrophysics · Physics 2009-11-10 I. Ferreras , J. Silk , A. Boehm , B. L. Ziegler

We study the properties of ISM substructure and turbulence in hydrodynamic (AMR) galaxy simulations with resolutions up to 0.8 pc and 5x10^3 Msun. We analyse the power spectrum of the density distribution, and various components of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Frederic Bournaud , Bruce G. Elmegreen , Romain Teyssier , David L. Block , Ivanio Puerari

We develop an analytic model to calculate the rate at which galaxy disks are heated by dark matter substructures orbiting in their halos. The model takes into account the internal structure, mass function and accretion rate of satellites…

Astrophysics · Physics 2009-11-10 A. J. Benson , C. G. Lacey , C. S. Frenk , C. G. Baugh , S. Cole

We present results of a high-resolution zoom cosmological simulation of the evolution of a low-mass galaxy with a maximum velocity of V=100 km/s at z=0, using the initial conditions from the AGORA project (Kim et al. 2014). The final…

Astrophysics of Galaxies · Physics 2017-03-22 Daniel Ceverino , Joel Primack , Avishai Dekel , Susan A. Kassin

Using galaxy evolutionary models in a hierarchical formation scenario, we predict the structure, dynamics and evolution of disk galaxies in a LCDM universe. Our models include star formation and hydrodynamics of the ISM. We find that the…

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

We develop a new realistic prescription for modeling the stellar feedback, which minimizes any ad hoc assumptions about sub-grid physics. We start with developing high resolution models of the ISM and formulate the conditions required for…

Astrophysics · Physics 2009-04-03 Daniel Ceverino , Anatoly Klypin

The energy and momentum feedback from young stars has a profound impact on the interstellar medium (ISM), including heating and driving turbulence in the neutral gas that fuels future star formation. Recent theory has argued that this leads…

Astrophysics of Galaxies · Physics 2015-06-16 Chang-Goo Kim , Eve C. Ostriker , Woong-Tae Kim

We present the results of a series of gas dynamical cosmological simulations of the formation of individual massive field galaxies in the standard concordance \LCDM and in a \LWDM cosmology. The galaxies form in an initial burst of star…

Astrophysics · Physics 2007-05-23 Lisa J. Wright , Jeremiah P. Ostriker , Thorsten Naab , George Efstathiou

We analyze the first cosmological simulations that recover the fragmentation of high-redshift galactic discs driven by cold streams. The fragmentation is recovered owing to an AMR resolution better than 70 pc with cooling below 10^4 K. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Daniel Ceverino , Avishai Dekel , Frederic Bournaud

Circumstellar disks are an essential ingredient of the formation of low-mass stars. It is unclear, however, whether the accretion-disk paradigm can also account for the formation of stars more massive than about 10 solar masses, in which…

We have used the IRAM Plateau de Bure Interferometer and the Expanded Very Large Array to obtain a high resolution map of the CO(6-5) and CO(1-0) emission in the lensed, star-forming galaxy SMMJ2135-0102 at z=2.32. The kinematics of the gas…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Mark Swinbank , Padelis Papadopoulos , Pierre Cox , Melanie Krips , Rob Ivison , Ian Smail , Alasdair Thomson , Roberto Neri , Johan Richard , Harald Ebeling

We present a framework for high-redshift ($z \geq 7$) galaxy formation that traces their dark matter (DM) and baryonic assembly in four cosmologies: Cold Dark Matter (CDM) and Warm Dark Matter (WDM) with particle masses of $m_x =$ 1.5, 3…

Astrophysics of Galaxies · Physics 2015-06-17 Pratika Dayal , Andrei Mesinger , Fabio Pacucci

We examine the pressure of the star-forming interstellar medium (ISM) of Milky-Way sized disk galaxies using fully cosmological SPH+N-body, high resolution simulations. These simulations include explicit treatment of metal-line cooling in…

Astrophysics of Galaxies · Physics 2015-06-18 Ferah Munshi , Charlotte Christensen , Thomas R. Quinn , Fabio Governato , James Wadsley , Sarah Loebman , Sijing Shen

We study the structure, age and metallicity gradients, and dynamical evolution using a cosmological zoom-in simulation of a Milky Way-mass galaxy from the Feedback in Realistic Environments project. In the simulation, stars older than 6 Gyr…

We examine the rotation rates, sizes, and star formation (SF) efficiencies of a representative population of simulated disc galaxies extracted from the Galaxies-Intergalactic Medium Interaction Calculation (GIMIC) suite of cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2012-11-16 Ian G. McCarthy , Joop Schaye , Andreea S. Font , Tom Theuns , Carlos S. Frenk , Robert A. Crain , Claudio Dalla Vecchia

We present a sample of nine high resolution cosmological simulations in the mass range of M_vir=7x10^11-4x10^12 M_sun starting from LambdaCDM initial conditions. Our simulations include primordial radiative cooling, photoionization, star…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Peter H. Johansson , Thorsten Naab , Jeremiah P. Ostriker

[Abridged] We present the first results of hydrodynamical simulations that follow the formation of galaxies to z=0 in spherical regions of radius ~20 Mpc/h drawn from the Millennium Simulation. The regions have overdensities that deviate by…

We compare the central mass concentration of Cold Dark Matter halos found in cosmological N-body simulations with constraints derived from the Milky Way disk dynamics and from the Tully-Fisher relation. For currently favored values of the…

Astrophysics · Physics 2009-09-28 Julio F. Navarro , Matthias Steinmetz

We study the relation between the surface density of gas and star formation rate in twenty moderately-inclined, bulgeless disk galaxies (Sd-Sdm Hubble types) using CO(1-0) data from the IRAM 30m telescope, HI emission line data from the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Linda C. Watson , Paul Martini , Ute Lisenfeld , Man-Hong Wong , Torsten Boeker , Eva Schinnerer