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By implementing a dynamic wind-tunnel model in a smoothed-particle chemodynamic/hydrodynamic simulation suite, we have investigated the effects of ram pressure and tidal forces on dwarf galaxies similar to the Magellanic Clouds, within host…

Astrophysics of Galaxies · Physics 2018-11-07 David Williamson , Hugo Martel

We present 3D hydrodynamic simulations of ram pressure stripping in dwarf galaxies. Analogous studies on this subject usually deal with much higher ram pressures, typical of galaxy clusters, or mild ram pressure due to the gas halo of the…

Astrophysics · Physics 2009-11-10 A. Marcolini , F. Brighenti , A. D'Ercole

We perform high-resolution N-Body+SPH simulations of gas-rich dwarf galaxy satellites orbiting within a Milky Way-sized halo and study for the first time the combined effects of tides and ram pressure. The structure of the galaxy models and…

Astrophysics · Physics 2009-11-11 Lucio Mayer , Chiara Mastropietro , James Wadsley , Joachim Stadel , Ben Moore

A conclusive model for the formation of dwarf spheroidal (dSph) galaxies still remains elusive. Owing to their proximity to the massive spirals Milky Way (MW) and M31, various environmental processes have been invoked to explain their…

Astrophysics of Galaxies · Physics 2017-03-29 Stelios Kazantzidis , Lucio Mayer , Simone Callegari , Massimo Dotti , Leonidas A. Moustakas

We use SPH/N-body simulations to study the ram-pressure stripping of the gas of dwarf galaxies orbiting in a disc galaxy. The effects of the gaseous disc and halo on the satellites are analysed and the results are compared with the…

Astrophysics · Physics 2007-05-23 M. A. Gomez-Flechoso

We investigate the effects of ram pressure stripping on gas-rich disk galaxies in the cluster environment. Ram pressure stripping principally effects the atomic gas in disk galaxies, stripping away outer disk gas to a truncation radius. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 R. Smith , M. Fellhauer , P. Assmann

Comprehensive observations of galaxy clusters suggest that gas deficiency in the galaxies could be due to ram pressure stripping due to the high-pressure intra-cluster medium acting on the galactic discs. The presence of gas in galaxies is…

Astrophysics of Galaxies · Physics 2024-04-10 Ankit Singh , Shreya Davessar , Mamta Gulati , Jasjeet Singh Bagla , Meenu Prajapati

Dwarf galaxies are affected by all the evolutionary processes normally at work in galaxies of any mass. As fainter and less massive galaxies, however, dwarf galaxies are particularly susceptible to environmental mechanisms that can more…

We first review the results of the tidal stirring model for the transformation of gas-rich dwarf irregulars into dwarf spheroidals, which turns rotationally supported stellar systems into pressure supported ones. We emphasize the importance…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Lucio Mayer

We examine the possibility that ram pressure exerted by the galactic wind from the Galaxy could have stripped gas from the Local Group dwarf galaxies, thereby affecting their star formation histories. Whether gas stripping occurs or not…

Astrophysics · Physics 2016-01-13 H. Hirashita , H. Kamaya , S. Mineshige

Ram pressure stripping is an important process in the evolution of both dwarf galaxies and large spirals. Large spirals are severely stripped in rich clusters and may be mildly stripped in groups. Dwarf galaxies can be severely stripped in…

Astrophysics · Physics 2011-02-11 J. A. Hester

We investigate the influence of ram-pressure stripping on the internal gas kinematics of simulated spiral galaxies. Additional emphasis is put on the question of how the resulting distortions of the gaseous disc are visible in the rotation…

Astrophysics · Physics 2009-11-13 T. Kronberger , W. Kapferer , S. Unterguggenberger , S. Schindler , B. L. Ziegler

We discuss the role of environmental mechanisms in the evolution of dwarf galaxy satellites using high-resolution N-Body+SPH simulations that include simultaneously tidal forces, ram pressure and heating from ionizing radiation fields.…

Astrophysics · Physics 2009-11-11 Lucio Mayer

We investigate the dependence of star formation and the distribution of the components of galaxies on the strength of ram pressure. Several mock observations in X-ray, H$\alpha$ and HI wavelength for different ram-pressure scenarios are…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 W. Kapferer , C. Sluka , S. Schindler , C. Ferrari , B. Ziegler

Ram-pressure stripping (RPS) is a well observed phenomenon of massive spiral galaxies passing through the hot intra-cluster medium (ICM) of galaxy clusters. For dwarf galaxies (DGs) within a cluster, the transformation from gaseous to…

Astrophysics of Galaxies · Physics 2020-04-08 Patrick Steyrleithner , Gerhard Hensler , Alessandro Boselli

Our aim is to study the evolution of tidal dwarf galaxies. The first step is to understand whether a model galaxy without Dark Matter can sustain the feedback of the ongoing star formation. We present tests of the evolution of models in…

Astrophysics · Physics 2009-11-11 S. Recchi , P. Kroupa , Ch. Theis , G. Hensler

We study the hydrodynamical evolution of galactic winds in disky dwarf galaxies moving through an intergalactic medium. In agreement with previous investigations,we find that when the ram pressure stripping does not disrupt the ISM, it…

Astrophysics · Physics 2009-11-10 Andrea Marcolini , Fabrizio Brighenti , Annibale D'Ercole

Cluster spiral galaxies suffer catastrophic losses of the cool, neutral gas component of their interstellar medium due to ram pressure stripping, contributing to the observed quenching of star formation in the disk compared to galaxies in…

Astrophysics of Galaxies · Physics 2022-03-30 Ryan Jeffrey Farber , Mateusz Ruszkowski , Stephanie Tonnesen , Paco Holguin

We investigate the influence of ram-pressure stripping on the star formation and the mass distribution in simulated spiral galaxies. Special emphasis is put on the question where the newly formed stars are located. The stripping radius from…

Astrophysics · Physics 2009-11-13 T. Kronberger , W. Kapferer , C. Ferrari , S. Unterguggenberger , S. Schindler

The mass-metallicity relation shows that the galaxies with the lowest mass have the lowest metallicities. As most dwarf galaxies are in group environments, interaction effects such as tides could contribute to this trend. We perform a…

Astrophysics of Galaxies · Physics 2016-10-26 David Williamson , Hugo Martel , Alessandro B. Romeo
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