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相关论文: An analytical galactic chemical evolution model wi…

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The high metallicity of the intra-cluster medium (ICM) is generally interpreted on the base of the galactic wind scenario for elliptical galaxies. In this framework, we develop a toy-model to follow the chemical evolution of the ICM,…

天体物理学 · 物理学 2009-11-10 A. Moretti , L. Portinari , C. Chiosi

We present an update to the chemical enrichment component of the smoothed-particle hydrodynamics model for galaxy formation presented in Scannapieco et al. (2005) in order to address the needs of modelling galactic chemical evolution in…

星系天体物理 · 物理学 2018-08-15 Pierre-Antoine Poulhazan , Cecilia Scannapieco , Peter Creasey

NGC 4330 is one of the Virgo galaxies whose UV distribution shows a tail structure. An associated tail structure is also observed in the HI and H$\alpha$ emission distributions. Previous dynamical modeling showed that the galaxy is…

星系天体物理 · 物理学 2021-02-03 B. Vollmer , M. Fossati , A. Boselli , M. Soida , S. Gwyn , J. C. Cuillandre , Ph. Amram , S. Boissier , M. Boquien , G. Hensler

Ram-pressure stripping by the gaseous intra-cluster medium has been proposed as the dominant physical mechanism driving the rapid evolution of galaxies in dense environments. Detailed studies of this process have, however, largely been…

星系天体物理 · 物理学 2014-06-19 Harald Ebeling , Lauren N. Stephenson , Alastair C. Edge

Ram pressure stripping of galaxies in clusters can yield gas deficient disks. Previous numerical simulations based on various approaches suggested that, except for near edge-on disk orientations, the amount of stripping depends very little…

宇宙学与河外天体物理 · 物理学 2015-05-13 P. Jachym , J. Koppen , J. Palous , F. Combes

Chemical evolution models are useful for understanding the formation and evolution of stars and galaxies. Model predictions will be more robust as more observational constraints are used. We present chemical evolution models for the dwarf…

宇宙学与河外天体物理 · 物理学 2011-08-31 Liliana Hernandez-Martinez , Leticia Carigi , Miriam Peña , Manuel Peimbert

Interstellar dust is an important component of the galactic ecosystem, playing a key role in multiple galaxy formation processes. We present a novel numerical framework for the dynamics and size evolution of dust grains implemented in the…

星系天体物理 · 物理学 2018-05-23 Ryan McKinnon , Mark Vogelsberger , Paul Torrey , Federico Marinacci , Rahul Kannan

Using MUSE observations from the GASP survey, we study 54 galaxies undergoing ram-pressure stripping (RPS) spanning a wide range in galaxy mass and host cluster mass. We use this rich sample to study how the star formation rate (SFR) in the…

Stars in globular clusters (GCs) lose a non negligible amount of mass during their post-main sequence evolution. This material is then expected to build up a substantial intra-cluster medium (ICM) within the GC. However, the observed gas…

星系天体物理 · 物理学 2020-02-19 W. Chantereau , P. Biernacki , M. Martig , N. Bastian , M. Salaris , R. Teyssier

Spiral galaxies are thought to acquire their gas through a protracted infall phase resulting in the inside-out growth of their associated discs. For field spirals, this infall occurs in the lower density environments of the cosmic web. The…

星系天体物理 · 物理学 2016-08-17 Mercedes Mollá , Ángeles I. Díaz , Brad K. Gibson , Oscar Cavichia , Ángel R. López-Sánchez

A recent survey of the Galaxy and M31 reveals that more than 90% of dwarf galaxies within 270 kpc of their host galaxy are deficient in HI gas. At such an extreme radius, the coronal halo gas is an order of magnitude too low to remove HI…

星系天体物理 · 物理学 2015-05-27 Matthew Nichols , Joss Bland-Hawthorn

We use cosmological hydrodynamic simulations to investigate how inflows, star formation, and outflows govern the the gaseous and metal content of galaxies. In our simulations, galaxy metallicities are established by a balance between…

宇宙学与河外天体物理 · 物理学 2015-05-27 Romeel Davé , Kristian Finlator , Benjamin D. Oppenheimer

We examine metal and entropy content in galaxy groups having T_X~0.5-2 keV in cosmological hydrodynamic simulations. Our simulations include a well-constrained prescription for galactic outflows following momentum-driven wind scalings, and…

天体物理学 · 物理学 2009-11-13 Romeel Davé , Benjamin D. Oppenheimer , Suresh Sivanandam

Because of their low gravitational energies dwarf galaxies are greatly exposed to energetical influences by the interstellar medium, like e.g.\ stellar radiation, winds or explosions, or by their environment. While the metallicity depletion…

天体物理学 · 物理学 2007-05-23 G. Hensler , A. Rieschick

We present new three dimensional, hydrodynamic simulations of the ram pressure stripping of disc galaxies via interaction with an hot intracluster medium (ICM). The simulations were carried with the smoothed-particle hydrodynamics, adaptive…

天体物理学 · 物理学 2008-11-26 Steven Schulz , Curtis Struck

We investigate models of self-consistent chemical enrichment of the intergalactic medium (IGM) from z=6 to 1.5, based on hydrodynamic simulations of structure formation that incorporate galactic outflows. Our main result is that outflow…

天体物理学 · 物理学 2009-08-21 Benjamin D. Oppenheimer , Romeel Davé

We use a large suite of carefully controlled full hydrodynamic simulations to study the ram pressure stripping of the hot gaseous halos of galaxies as they fall into massive groups and clusters. The sensitivity of the results to the orbit,…

This is the first of a series of papers that will introduce a user-friendly, detailed, and modular GALactic Chemical Evolution Model, GalCEM, that tracks isotope masses as a function of time in a given galaxy. The list of tracked isotopes…

Aims: We investigate the effect of ram pressure stripping (RPS) on simulations of merging pairs of gas-rich spiral galaxies. Our goal is to provide an estimate of the combined effect of merging and RPS on stripping efficiency and star…

星系天体物理 · 物理学 2015-04-01 Jan Christoph Bischko , Dominik Steinhauser , Sabine Schindler

One-zone Galactic Chemical Evolution (GCE) models have provided useful insights on a great wealth of average abundance patterns in many environments, especially for the Milky Way and its satellites. However, the scatter of such abundance…

星系天体物理 · 物理学 2023-04-12 Jinning Liang , Eda Gjergo , Xilong Fan