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Ram pressure stripping (RPS) is a process that removes the interstellar medium (ISM) quickly, playing a vital role in galaxy evolution. Previous RPS studies have treated the ISM as single-phase or lack the resolution and physical processes…

Astrophysics of Galaxies · Physics 2022-09-14 Woorak Choi , Chang-Goo Kim , Aeree Chung

We investigate the importance of varying the ram pressure to more realistically mimic the infall of a cluster satellite galaxy when comparing ram pressure stripping simulations to observations. We examine the gas disk and tail properties of…

Astrophysics of Galaxies · Physics 2019-04-10 Stephanie Tonnesen

Galaxy clusters in the local Universe are dominated by massive quiescent galaxies with old ages, formed at high redshifts. It is debated whether their quenching is driven by internal processes or environmental effects, which has been…

It is often stated that the removal of gas by ram pressure stripping of a galaxy disk is not a common process in galaxy groups. In this study, with the aid of an observational classification of galaxies and a simple physical model, we show…

Astrophysics of Galaxies · Physics 2022-08-23 Tutku Kolcu , Jacob P. Crossett , Callum Bellhouse , Sean McGee

Galaxies moving through the intracluster medium (ICM) of a cluster of galaxies can lose gas via ram pressure stripping. This stripped gas forms a tail behind the galaxy which is potentially observable. In this paper, we carry out…

Cosmology and Nongalactic Astrophysics · Physics 2011-01-20 Stephanie Tonnesen , Greg L. Bryan

We investigate the effects of magnetic fields and turbulence on ram pressure stripping in elliptical galaxies using ideal magnetohydrodynamics simulations. We consider weakly-magnetised interstellar medium (ISM) characterised by subsonic…

Astrophysics of Galaxies · Physics 2014-10-16 Min-Su Shin , Mateusz Ruszkowski

Galaxy evolution can be dramatically affected by the environment, especially by the dense environment of a galaxy cluster. Recent observational studies show that massive galaxies undergoing strong ram pressure stripping (RPS) also show an…

Astrophysics of Galaxies · Physics 2023-05-03 Nina Akerman , Stephanie Tonnesen , Bianca M. Poggianti , Rory Smith , Antonino Marasco

We present two-dimensional numerical simulations of the evolution of a low-mass star moving supersonically through its surrounding interstellar medium (ISM). We show that the ejecta of a moving star with a systemic velocity of 20 km/s will…

Astrophysics · Physics 2009-11-07 Eva Villaver , Guillermo Garcia-Segura , Arturo Manchado

Recent observations of galaxies in a cluster at z=0.35 show that their integrated gas-phase metallicities increase with decreasing cluster-centric distance. To test if ram pressure stripping (RPS) is the underlying cause, we use a…

Astrophysics of Galaxies · Physics 2017-06-28 Anshu Gupta , Tiantian Yuan , Davide Martizzi , Kim-Vy H. Tran , Lisa J. Kewley

Substructure in the interstellar medium (ISM) is crucial for establishing the correlation between star formation and feedback and has the capacity to significantly perturb stellar orbits, thus playing a central role in galaxy dynamics and…

Astrophysics of Galaxies · Physics 2026-02-06 Shaunak Modak , Eve C. Ostriker , Chris Hamilton , Scott Tremaine

Cluster substructure and ram pressure stripping in individual galaxies are among the primary evidence for the ongoing growth of galaxy clusters as they accrete galaxies and groups from their surroundings. We present a multi-wavelength study…

We investigate the presence of shock-excited H2 in four Virgo cluster galaxies that show clear evidence of ongoing ram pressure stripping. Mid-infrared (MIR) spectral mapping of the rotational H2 emission lines were performed using the…

Astrophysics of Galaxies · Physics 2014-03-05 O. Ivy Wong , Jeffrey D. P. Kenney , Eric J. Murphy , George Helou

Ram pressure stripping is one of the most efficient mechanisms able to affect the gas reservoir in cluster galaxies and in the last decades many studies have characterized the properties of stripped galaxies. A definite census of the…

Astrophysics of Galaxies · Physics 2022-03-14 B. Vulcani , B. M. Poggianti , R. Smith , A. Moretti , Y. Jaffe , M. Gullieuszik , J. Fritz , C. Bellhouse

Using a hybrid method which combines non-radiative hydrodynamical simulations with a semi-analytic model of galaxy formation, we determine the ram pressure as a function of halocentric distance experienced by galaxies in haloes with virial…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Tomás E. Tecce , Sofía A. Cora , Patricia B. Tissera

Ram pressure stripping (RPS) is one of the most invoked mechanisms to explain the observed differences between cluster and field galaxies. In the local Universe, its effect on the galaxy star forming properties has been largely tackled and…

We analyse the presence of dust around galaxy group members through the reddening of background quasars. By taking into account quasar colour and their dependence on redshift and angular position, we derive mean quasar colours excess in…

Astrophysics of Galaxies · Physics 2020-01-15 S. Rodríguez , D. Garcia Lambas , N. D. Padilla , P. Troncoso-Iribarren

The formation mechanism of tidal dwarf galaxies means they are expected to contain little or no dark matter. As such, they might be expected to be very sensitive to their environment. We investigate the impact of ram pressure on tidal dwarf…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 R. Smith , P. A. Duc , G. N. Candlish , M. Fellhauer , Y. K. Sheen , B. K. Gibson

Most hydrodynamical simulations of galaxy cluster formation carried out to date have tried to model the cosmic gas as an ideal, inviscid fluid, where only a small amount of (unwanted) numerical viscosity is present, arising from practical…

Astrophysics · Physics 2009-11-11 Debora Sijacki , Volker Springel

MUSE observations of the cluster of galaxies CGr32 ($M_{200}$ $\simeq$ 2 $\times$ 10$^{14}$ M$_{\odot}$) at $z$ = 0.73 reveal the presence of two massive star forming galaxies with extended tails of diffuse gas detected in the…

Astrophysics of Galaxies · Physics 2019-11-06 Boselli , Epinat , Contini , Abril-Melgarejo , Boogaard , Pointecouteau , Ventou , Brinchmann , Carton , Finley , Michel-Dansac , Soucail , Weilbacher

The interaction of gas-rich galaxies with the intra-cluster medium (ICM) of galaxy clusters has a remarkable impact on their evolution, mainly due to the gas loss associated with this process. In this work, we use an idealised,…

Astrophysics of Galaxies · Physics 2018-07-30 Rafael Ruggiero , Romain Teyssier , Gastão B. Lima Neto , Valentin Perret
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