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Galaxies living in rich environments are suffering different perturbations able to drastically affect their evolution. Among these, ram pressure stripping, i.e. the pressure exerted by the hot and dense intracluster medium (ICM) on galaxies…

星系天体物理 · 物理学 2022-06-01 A. Boselli , M. Fossati , M. Sun

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…

星系天体物理 · 物理学 2024-04-10 Ankit Singh , Shreya Davessar , Mamta Gulati , Jasjeet Singh Bagla , Meenu Prajapati

While galaxies move through the intracluster medium of their host cluster, they experience a ram pressure which removes at least a significant part of their interstellar medium. This ram pressure stripping appears to be especially important…

宇宙学与河外天体物理 · 物理学 2015-05-14 E. Roediger

We simulated the behavior of interstellar gas clouds in a companion galaxy during a gas-dynamical interaction with the halo and disk of a spiral galaxy. By ram pressure, the gas clouds are stripped from the companion, and accreted to ward…

天体物理学 · 物理学 2009-10-22 Yoshiaki SOFUE

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…

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…

星系天体物理 · 物理学 2020-04-08 Patrick Steyrleithner , Gerhard Hensler , Alessandro Boselli

Ram pressure stripping is a well-known environmental quenching mechanism that removes gas from galaxies infalling into groups and clusters. In some extreme examples of ram pressure stripping, galaxies with extended gas tails show evidence…

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…

宇宙学与河外天体物理 · 物理学 2015-05-13 W. Kapferer , C. Sluka , S. Schindler , C. Ferrari , B. Ziegler

Black hole accretion is widely thought to influence star formation in galaxies, but the empirical evidence for a physical correlation between star formation rate (SFR) and the properties of active galactic nuclei (AGNs) remains highly…

星系天体物理 · 物理学 2023-08-21 Ming-Yang Zhuang , Luis C. Ho

We present results from a new set of 30 cosmological simulations of galaxy clusters, including the effects of radiative cooling, star formation, supernova feedback, black hole growth and AGN feedback. We first demonstrate that our AGN model…

宇宙学与河外天体物理 · 物理学 2015-06-22 Simon R. Pike , Scott T. Kay , Richard D. A. Newton , Peter A. Thomas , Adrian Jenkins

Growing evidence in support of a connection between Active Galactic Nuclei (AGN) activity and the Ram-Pressure Stripping (RPS) phenomenon has been found both observationally and theoretically in the past decades. In this work, we further…

Active galactic nucleus (AGN) feedback provides the link between the central black hole and its host galaxy. We assume AGN feedback driven by radiation pressure on dust, which sweeps up the ambient dusty gas into an outflowing shell, and…

星系天体物理 · 物理学 2015-06-19 W. Ishibashi , A. C. Fabian

Growing supermassive black holes (Active Galactic Nuclei; AGN) release energy with the potential to alter their host galaxies and larger-scale environment; a process named "AGN feedback". Feedback is a required component of galaxy formation…

星系天体物理 · 物理学 2024-04-15 Chris M. Harrison , Cristina Ramos Almeida

Ram pressure stripping of satellite galaxies is thought to be a ubiquitous process in galaxy clusters, and a growing number of observations reveal satellites at different stages of stripping. However, in order to determine the fate of any…

Pressure-regulated star formation is a simple variant on the usual supernova-regulated star formation efficiency that controls the global star formation rate as a function of cold gas content in star-forming galaxies, and accounts for the…

宇宙学与河外天体物理 · 物理学 2015-06-16 Joseph Silk

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

The presence of absorbing gas around the central engine of Active Galactic Nuclei (AGN) is a common feature of these objects. Recent work has looked at the effect of the dust component of the gas, and how it enhances radiation pressure such…

宇宙学与河外天体物理 · 物理学 2015-05-19 S. I. Raimundo , A. C. Fabian , F. E. Bauer , D. M. Alexander , W. N. Brandt , B. Luo , R. V. Vasudevan , Y. Q. Xue

Radiation, winds and jets from the active nucleus of a massive galaxy can interact with its interstellar medium leading to ejection or heating of the gas. This can terminate star formation in the galaxy and stifle accretion onto the black…

宇宙学与河外天体物理 · 物理学 2015-06-04 A. C. Fabian

It is now widely believed that the growth of massive black holes is closely linked to the formation of galaxies, but there have been few concrete constraints on the actual physical processes responsible for this coupling. Investigating the…

天体物理学 · 物理学 2007-05-23 Luis C. Ho