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相关论文: On the influence of environment on star forming ga…

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Reproducing the observed quenched fraction of satellite galaxies has been a long-standing issue for galaxy formation models. We modify the treatment of environmental effects in our state-of-the-art GAlaxy Evolution and Assembly (GAEA)…

星系天体物理 · 物理学 2020-08-11 Lizhi Xie , Gabriella De Lucia , Michaela Hirschmann , Fabio Fontanot

Galaxies that have fallen into massive haloes may no longer be able to accrete gas from their surroundings, a process referred to as 'starvation' or 'strangulation' of satellites. We study the environmental dependence of gas accretion onto…

Environment plays a pivotal role in shaping the evolution of satellite galaxies. Analyzing the properties related to the cold gas phase of satellites provides insights into unravelling the complexity of environmental effects. We use the…

星系天体物理 · 物理学 2024-01-17 Hongxing Chen , Lizhi Xie , Jie Wang , Wenkai Hu , Gabriella De Lucia , Fabio Fontanot , Michaela Hirschamnn

We quantitatively examine the effects of accretion and environment on the HI content of galaxies within a cosmological hydrodynamic simulation that reproduces basic observed trends of HI in galaxies. We show that our model broadly…

We review recent results on the dependence of various galaxy properties on environment at low redshift. As environmental indicators, we use group mass, group-centric radius, and the distinction between centrals and satellites; examined…

宇宙学与河外天体物理 · 物理学 2015-05-27 Simone M. Weinmann , Frank C. van den Bosch , Anna Pasquali

In this paper we investigate environment driven gas depletion in satellite galaxies, taking full advantage of the atomic hydrogen (HI) spectral stacking technique to quantify the gas content for the entire gas-poor to -rich regime. We do so…

Galaxy evolution depends on the environment in which galaxies are located. The various physical processes (ram-pressure stripping, tidal interactions, etc.) that can affect the gas content in galaxies have different efficiencies in…

We use our state-of-the-art Galaxy Evolution and Assembly (GAEA) semi-analytic model to study how and on which time-scales star formation is suppressed in satellite galaxies. Our fiducial stellar feedback model, implementing strong stellar…

星系天体物理 · 物理学 2018-11-28 Gabriella De Lucia , Michaela Hirschmann , Fabio Fontanot

In this paper, we take advantage of the GAlaxy Evolution and Assembly (GAEA) semi-analytic model to analyse the origin of secondary dependencies in the local galaxy mass - gas metallicity relation. Our model reproduces quite well the trends…

星系天体物理 · 物理学 2020-09-02 Gabriella De Lucia , Lizhi Xie , Fabio Fontanot , Michaela Hirschmann

We present a detailed analysis of the influence of the environment and of the environmental history on quenching star formation in central and satellite galaxies in the local Universe. We take advantage of publicly available galaxy…

We update our recently published model for GAlaxy Evolution and Assembly (GAEA), to include a self-consistent treatment of the partition of cold gas in atomic and molecular hydrogen. Our model provides significant improvements with respect…

星系天体物理 · 物理学 2017-07-20 Lizhi Xie , Gabriella De Lucia , Michaela Hirschmann , Fabio Fontanot , Anna Zoldan

We investigate how the specific star formation rates of galaxies of different masses depend on cluster-centric radius and on the central/satellite dichotomy in both field and cluster environments. Recent data from a variety of sources,…

星系天体物理 · 物理学 2015-05-14 Simone M. Weinmann , Guinevere Kauffmann , Anja von der Linden , Gabriella De Lucia

We combine the latest spectrally stacked data of 21-cm emission from the ALFALFA survey with an updated version of the Dark Sage semi-analytic model to investigate the relative contributions of secular and environmental astrophysical…

星系天体物理 · 物理学 2017-08-17 Adam R. H. Stevens , Toby Brown

[ABRIDGED] Galaxy evolution is shaped by internal and external mechanisms that regulate the baryon cycle and star formation activity. We present a theoretical framework based on the GAlaxy Evolution and Assembly (GAEA) semi-analytic model.…

We have compiled a large sample of isolated central galaxies from the Sloan Digital Sky Survey, which do not have a neighbour of comparable brightness within a projected distance of 1 Mpc. We use the colours, luminosities and surface…

宇宙学与河外天体物理 · 物理学 2015-05-18 Guinevere Kauffmann , Cheng Li , Timothy M. Heckman

We study the impact of the environment on galaxies as they fall in and orbit in the potential well of a Local Group (LG) analogue, following them with high cadence. The analysis is performed on eight disc satellite galaxies from the CIELO…

We extend our previous work focused at $z\sim0$, studying the redshift evolution of galaxy dynamical properties using the state-of-the-art semi-analytic model GAEA: we show that the predicted size-mass relation for disky/star forming and…

星系天体物理 · 物理学 2019-06-26 Anna Zoldan , Gabriella De Lucia , Lizhi Xie , Fabio Fontanot , Michaela Hirschmann

Gas accretion and stellar feedback processes link metal content, star formation, and gas and stellar mass (and the potential depth) in star-forming galaxies. Constraining this hypersurface has been challenging because of the need for…

星系天体物理 · 物理学 2021-12-22 C. Tortora , L. K. Hunt , M. Ginolfi

One major problem of current theoretical models of galaxy formation is given by their inability to reproduce the apparently `anti-hierarchical' evolution of galaxy assembly: massive galaxies appear to be in place since $z\sim 3$, while a…

星系天体物理 · 物理学 2016-06-15 Michaela Hirschmann , Gabriella De Lucia , Fabio Fontanot

The quenching of star formation in satellite galaxies is observed over a wide range of dark matter halo masses and galaxy environments. In the recent Guo et al (2011) and Fu et al (2013) semi-analytic + N-body models, the gaseous…

星系天体物理 · 物理学 2016-02-17 Yu Luo , Xi Kang , Guinevere Kauffmann , Jian Fu
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