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相关论文: The search for shock-excited H2 in Virgo spirals e…

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We use the Spitzer Infrared Spectrograph (IRS) to study four infalling cluster galaxies with signatures of on-going ram-pressure stripping. H$_2$ emission is detected in all four; two show extraplanar H$_2$ emission. The emission usually…

星系天体物理 · 物理学 2015-06-23 Suresh Sivanandam , Marcia J. Rieke , George H. Rieke

Ram pressure stripping of the multiphase ISM is studied in the perturbed Virgo cluster spiral galaxy NGC 4438. This galaxy underwent a tidal interaction ~100 Myr ago and is now strongly affected by ram pressure stripping. Deep VLA radio…

星系天体物理 · 物理学 2009-11-13 B. Vollmer , M. Soida , A. Chung , L. Chemin , J. Braine , A. Boselli , R. Beck

We investigate the role of ram pressure stripping in the Virgo cluster using N-body simulations. Radial orbits within the Virgo cluster's gravitational potential are modeled and analyzed with respect to ram pressure stripping. The N-body…

天体物理学 · 物理学 2010-11-04 B. Vollmer , V. Cayatte , C. Balkowski , W. J. Duschl

The Virgo cluster galaxy NGC 4522 is one of the best spiral candidates for ICM-ISM stripping in action. Optical broadband and H-alpha images from the WIYN telescope of the highly inclined galaxy reveal a relatively undisturbed stellar disk…

天体物理学 · 物理学 2009-10-31 Jeffrey D. P. Kenney , Rebecca A. Koopmann

We present new measurements of chemical abundances in H II regions in spiral galaxies of the Virgo cluster and a comparison of Virgo galaxies and field spirals. With these new data there now exist nine Virgo spirals with abundance…

天体物理学 · 物理学 2009-10-28 Evan D. Skillman , Robert C. Kennicutt , Gregory A. Shields , Dennis Zaritsky

We study galaxies undergoing ram pressure stripping in the Virgo cluster to examine whether we can identify any discernible trend in their star formation activity. We first use 48 galaxies undergoing different stages of stripping based on…

星系天体物理 · 物理学 2021-03-25 Jae Yeon Mun , Ho Seong Hwang , Myung Gyoon Lee , Aeree Chung , Hyein Yoon , Jong Chul Lee

We present a multi-wavelength study of NGC 4330, a highly-inclined spiral galaxy in the Virgo Cluster which is a clear example of strong, ongoing ICM-ISM ram pressure stripping. The HI has been removed from well within the undisturbed old…

宇宙学与河外天体物理 · 物理学 2015-05-27 Anne Abramson , Jeffrey D. P. Kenney , Hugh H. Crowl , Aeree Chung , J. H. van Gorkom , Bernd Vollmer , David Schiminovich

New H-alpha Fabry-Perot interferometer observations of the Virgo cluster spiral galaxy NGC 4522 are presented. A velocity field up to a radius of 60'' was obtained. The observed rotation curve is symmetric. It is not perturbed in the inner…

天体物理学 · 物理学 2007-05-23 B. Vollmer , M. Marcelin , P. Amram , C. Balkowski , V. Cayatte , O. Garrido

We report the detection of an X-ray absorption feature near the galaxy M86 in the Virgo cluster. The absorber has a column density of 2-3 E20 /cm^2, and its position coincides with the peak of an intracluster HI cloud which was removed from…

High resolution (1'' $\times$ 2'') ALMA CO(2-1) observations of the ram pressure stripped galaxy NGC 4402 in the Virgo cluster show some of the clearest evidence yet for the impacts of ram pressure on the molecular ISM of a galaxy. The…

We study the case of a bright (L>L*) barred spiral galaxy from the rich cluster A3558 in the Shapley supercluster core (z=0.05) undergoing ram-pressure stripping. Integral-field spectroscopy, complemented by multi-band imaging, allows us to…

宇宙学与河外天体物理 · 物理学 2015-06-12 P. Merluzzi , G. Busarello , M. A. Dopita , C. P. Haines , D. Steinhauser , A. Mercurio , A. Rifatto , R. J. Smith , S. Schindler

A dynamical model including ram pressure stripping is applied to the strongly HI deficient Virgo spiral galaxy NGC 4522. A carefully chosen model snapshot is compared with existing VLA HI observations. The model successfully reproduces the…

天体物理学 · 物理学 2016-08-15 B. Vollmer , M. Soida , K. Otmianowska-Mazur , J. D. P. Kenney , J. H. van Gorkom , R. Beck

Based on a comparison of dynamical models with observations of the interstellar gas in 6 Virgo cluster spiral galaxies a first complete ram pressure stripping time sequence has been established. The observational characteristics of the…

宇宙学与河外天体物理 · 物理学 2015-05-13 B. Vollmer

Deep Effelsberg 100-m HI observations of 5 HI deficient Virgo spiral galaxies are presented. No new extended HI tail is found in these galaxies. The already known HI tail north of NGC 4388 does not significantly extend further than a WSRT…

天体物理学 · 物理学 2009-11-11 B. Vollmer , W. Huchtmeier

We present 12CO (2-1) data of three Virgo spirals - NGC 4330, NGC 4402 and NGC 4522 obtained using the Submillimeter Array. These three galaxies show clear evidence of ram pressure stripping due to the cluster medium as found in previous HI…

VIVA HI observations of the Virgo spiral galaxy NGC 4501 are presented. The HI disk is sharply truncated to the southwest, well within the stellar disk. A region of low surface-density gas, which is more extended than the main HI disk, is…

天体物理学 · 物理学 2009-11-13 B. Vollmer , M. Soida , A. Chung , J. H. van Gorkom , K. Otmianowska-Mazur , R. Beck , M. Urbanik , J. D. P. Kenney

We present VLA HI observations at ~20"=1.5 kpc resolution of the highly inclined, HI-deficient Virgo cluster spiral galaxy NGC 4522, which is one of the clearest and nearest cases of ongoing ICM-ISM stripping. HI is abundant and spatially…

天体物理学 · 物理学 2009-09-28 Jeffrey D. P. Kenney , J. H. van Gorkom , Bernd Vollmer

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

Gas can be violently stripped from their galaxy disks in rich clusters, and be dispersed over 100kpc-scale tails or plumes. Young stars have been observed in these tails, suggesting they are formed in situ. This will contribute to the…

星系天体物理 · 物理学 2015-09-30 Celia Verdugo , Françoise Combes , Kalliopi Dasyra , Phillipe Salome , Jonathan Braine

Cluster galaxies are affected by the surrounding environment, which influences, in particular, their gas, stellar content and morphology. In particular, the ram-pressure exerted by the intracluster medium promotes the formation of…

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