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The neutral atomic hydrogen (HI) content of spiral galaxies has been observed to vary with environment, with more HI-deficient spirals residing in high density environments. This can be attributed to environmental effects such as ram…

About 20 percent of all nearby early-type galaxies ($M_{\star} \gtrsim 6 \times 10^{9}$ M$_{\odot}$) outside the Virgo cluster are surrounded by a disc or ring of low-column-density neutral hydrogen (HI) gas with typical radii of tens of…

星系天体物理 · 物理学 2016-10-26 Mustafa K. Yıldız , Paolo Serra , Reynier F. Peletier , Tom A. Oosterloo , Pierre-Alain Duc

Spiral galaxies that are deficient in neutral Hydrogen are observed on the outskirts of the Virgo cluster. If their orbits have crossed the inner parts of the cluster, their interstellar gas may have been lost through ram pressure stripping…

天体物理学 · 物理学 2007-05-23 G. A. Mamon , T. Sanchis , E. Salvador-Sole' , J. M. Solanes , .

We map the Hi distribution of galaxies in a $\sim 1.5^\circ \times 2.5^\circ$ region located at the virial radius south of the Virgo cluster using the KAT$-$7 and the WSRT interferometers. Because of the different beam sizes of the two…

星系天体物理 · 物理学 2016-09-14 Amidou Sorgho , Kelley M. Hess , Claude Carignan , Tom A. Oosterloo

Herschel FIR observations are used to construct Virgo cluster galaxy luminosity functions and to show that the cluster lacks the very bright and the numerous faint sources detected in field galaxy surveys. The far-infrared SEDs are fitted…

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

We use a combination of deep optical (gri) and near-infrared (H) photometry to study the radially-resolved colours of a broad sample of 300 Virgo cluster galaxies. For most galaxy types, we find that the median g-H colour gradient is either…

宇宙学与河外天体物理 · 物理学 2015-05-28 Joel C. Roediger , Stephane Courteau , Michael McDonald , Lauren A. MacArthur

We explore the quantified morphology of atomic hydrogen (HI) disks in the Virgo cluster. These galaxies display a wealth of phenomena in their Hi morphology, e.g., tails, truncation and warps. These morphological disturbances are related to…

宇宙学与河外天体物理 · 物理学 2015-05-27 B. W. Holwerda , N. Pirzkal , W. J. G. de Blok , W. van Driel

We investigate the influence of environment on the cold-gas properties of galaxies at z=0 within the TNG100 cosmological, magnetohydrodynamic simulation, part of the IllustrisTNG suite. We extend previous post-processing methods for…

We study the influence of cluster environment on the chemical evolution of spiral galaxies in the Pegasus I cluster. We determine the gas-phase heavy element abundances of six galaxies in Pegasus derived from H II region spectra obtained…

宇宙学与河外天体物理 · 物理学 2015-06-03 Paul Robertson , Gregory A. Shields , Guillermo A. Blanc

Compact groups of galaxies provide a unique environment to study the evolution of galaxies amid frequent gravitational encounters. These nearby groups have conditions similar to those in the earlier universe when galaxies were assembled and…

The origin of the deficiency in neutral Hydrogen of 13 spiral galaxies lying in the outskirts of the Virgo cluster is reassessed. If these galaxies have passed through the core of the cluster, their interstellar gas should have been lost…

天体物理学 · 物理学 2009-11-10 T. Sanchis , G. A. Mamon , E. Salvador-Sole' , J. M. Solanes , .

[Abridged] We use the final data of the VIMOS Public Extragalactic Redshift Survey (VIPERS) to investigate the effect of environment on the evolution of galaxies between $z=0.5$ and $z=0.9$. We characterise local environment in terms of the…

We detected a ring-like distribution of far-infrared emission in the direction of the center of the Virgo cluster. We studied this feature in the FIR, radio, and optical domains, and deduced that the dust within the feature reddens the…

天体物理学 · 物理学 2009-10-31 N. Brosch , E. Almoznino , B. Wszolek , K. Rudnicki

We present 21 cm observations of a 5 x degree region in the Virgo cluster, obtained as part of the Arecibo Galaxy Environment Survey. 13 cluster members are detected, together with 36 objects in the background. We compare and contrast the…

星系天体物理 · 物理学 2015-06-11 R. Taylor , J. I. Davies , R. Auld , R. F. Minchin , R. Smith

We present an analysis of the molecular and atomic gas properties of 10 spatially resolved galaxies in the A2626 cluster (z = 0.055), observed as part of the SYMPHANY project. Using CO(2-1) observations from ALMA and SMA, together with HI…

We discuss HI and optical evidence for ongoing ICM-ISM interactions in 6 HI-deficient Virgo cluster spiral galaxies. One of the clearest cases is the highly inclined Virgo galaxy NGC 4522, which has a normal stellar disk but a truncated gas…

天体物理学 · 物理学 2007-05-23 Jeffrey D. P. Kenney , Hugh Crowl , Jacqueline van Gorkom , Bernd Vollmer

Environmental effects such as ram-pressure stripping (RPS) shape the evolution of galaxies in dense regions. We use the nearby Virgo cluster as a laboratory to study environmental effects on the non-thermal components of star-forming…

星系天体物理 · 物理学 2023-11-06 H. W. Edler , I. D. Roberts , A. Boselli , F. de Gasperin , V. Heesen , M. Brüggen , A. Ignesti , L. Gajović

We use the Galaxies-Intergalactic Medium Interaction Calculation (GIMIC) cosmological hydrodynamic simulation at z=0 to study the distribution and environmental dependence of neutral hydrogen (HI) gas in the outskirts of simulated galaxies.…

宇宙学与河外天体物理 · 物理学 2015-06-18 D. Cunnama , S. Andrianomena , C. M. Cress , A. Faltenbacher , B. K. Gibson , T. Theuns

Intra-cluster (IC) populations are expected to be a natural result of the hierarchical assembly of clusters, yet their low space densities make them difficult to detect and study. We present the first definitive kinematic detection of an IC…