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相关论文: Clumpy galaxies in cosmological simulations: The e…

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Improving upon the standard evolutionary population synthesis (EPS) technique, we present spectrophotometric models of galaxies whose morphology goes from spherical structures to discs, properly accounting for the effect of dust in the…

星系天体物理 · 物理学 2023-09-25 Letizia P. Cassarà , Lorenzo Piovan , Cesare Chiosi

We investigate the properties of the intracluster medium (ICM) that forms within N-body/hydrodynamical simulations of galaxy clusters in a \LambdaCDM cosmology. When radiative cooling and a simple model for galactic feedback are included,…

天体物理学 · 物理学 2009-11-10 Scott T. Kay , Peter A. Thomas , Adrian Jenkins , Frazer R. Pearce

We perform calculations of isolated disc galaxies to investigate how the properties of the ISM, the nature of molecular clouds, and the global star formation rate depend on the level of stellar feedback. We adopt a simple physical model,…

星系天体物理 · 物理学 2015-05-28 C. L. Dobbs , A. Burkert , J. E. Pringle

We examine a possible formation scenario of galactic thick discs with numerical simulations. Thick discs have previously been argued to form in clumpy disc phase in the high-redshift Universe, which host giant clumps of <10^9 M_sun in their…

星系天体物理 · 物理学 2015-06-18 Shigeki Inoue , Takayuki R. Saitoh

Elliptical galaxies contain X-ray emitting gas that is subject to continuous ram pressure stripping over timescales comparable to cluster ages. The gas in these galaxies is not in perfect hydrostatic equilibrium. Supernova feedback, stellar…

宇宙学与河外天体物理 · 物理学 2012-10-29 Min-Su Shin , Mateusz Ruszkowski

We present a set of hydrodynamical/Nbody controlled simulations of isolated gas rich galaxies that self-consistently include SN feedback and a detailed chemical evolution model, both tested in cosmological simulations. The initial…

星系天体物理 · 物理学 2015-06-16 J. Perez , O. Valenzuela , P. Tissera , L. Michel-Dansac

We study the stability properties of isolated star forming dwarf galaxies which undergo dynamically driven starbursts induced by stellar feedback. Here we focus on the impact of the adopted ISM model, i.e. either a diffuse or a clumpy ISM.…

宇宙学与河外天体物理 · 物理学 2009-09-11 Christian Theis , Joachim Koeppen

The evolution of star-forming galaxies at high redshifts is very sensitive to the strength and nature of stellar feedback. Using two sets of cosmological, zoom-in simulations from the VELA suite, we compare the effects of two different…

X-ray observations of galaxy clusters potentially provide powerful cosmological probes if systematics due to our incomplete knowledge of the intracluster medium (ICM) physics are understood and controlled. In this paper, we study the…

天体物理学 · 物理学 2015-06-24 Daisuke Nagai , Andrey V. Kravtsov , Alexey Vikhlinin

Cluster galaxies moving through the intracluster medium (ICM) are expected to lose some of their interstellar medium (ISM) through ISM-ICM interactions. We perform high resolution (40 pc) three-dimensional hydrodynamical simulations of a…

星系天体物理 · 物理学 2011-02-11 Stephanie Tonnesen , Greg L. Bryan

We present new ALMA dust continuum observations of 101 $\log(\mathrm{M}_* / \mathrm{M}_\odot)$ > 9.5 galaxies in the COSMOS field to study the effect of environment on the interstellar medium at z ~ 0.7. At this redshift, our targets span a…

星系天体物理 · 物理学 2019-03-26 S. K. Betti , Alexandra Pope , N. Scoville , Min S. Yun , H. Aussel , J. Kartaltepe , K. Sheth

Using high-resolution simulations with explicit treatment of stellar feedback physics based on the FIRE (Feedback in Realistic Environments) project, we study how galaxy formation and the interstellar medium (ISM) are affected by magnetic…

We present results of cosmological simulations of disk galaxies carried out with the GADGET-3 TreePM+SPH code, where star formation and stellar feedback are described using our MUlti Phase Particle Integrator (MUPPI) model. This description…

星系天体物理 · 物理学 2014-11-17 Giuseppe Murante , Pierluigi Monaco , Stefano Borgani , Luca Tornatore , Klaus Dolag , David Goz

While marginal in mass terms, dust grains play an outsized role in both the physics and observation of the interstellar medium (ISM). However, explicit modelling of this ISM constituent remains uncommon in large cosmological simulations. In…

Removing cold interstellar medium (ISM) from a galaxy is central to quenching star formation. However, the exact mechanism of this process remains unclear. The objective of this work is to find the mechanism responsible for dust and gas…

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…

宇宙学与河外天体物理 · 物理学 2015-05-19 Frederic Bournaud , Bruce G. Elmegreen , Romain Teyssier , David L. Block , Ivanio Puerari

The mechanisms that maintain turbulence in the interstellar medium (ISM) are still not identified. This work investigates how we can distinguish between two fundamental driving mechanisms: the accumulated effect of stellar feedback versus…

We study how the gas in a sample of galaxies (M* > 10e9 Msun) in clusters, obtained in a cosmological simulation, is affected by the interaction with the intra-cluster medium (ICM). The dynamical state of each elemental parcel of gas is…

星系天体物理 · 物理学 2017-05-31 Vicent Quilis , Susana Planelles , Elena Ricciardelli

We use high-resolution maps of the molecular interstellar medium (ISM) in the centres of eighty-six nearby galaxies from the millimetre-Wave Interferometric Survey of Dark Object Masses (WISDOM) and Physics at High Angular Resolution in…