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We present new Gemini/GMOS spectroscopic and archival imaging data of the interacting galaxy NGC 92, which is part of a compact group and displays an extended tidal tail. We have studied the physical properties of 20 star-forming complexes…

We present the tidal tail distributions of a sample of candidate binary clusters located in the bar of the Large Magellanic Cloud (LMC). One isolated cluster, SL 268, is presented in order to study the effect of the LMC tidal field. All the…

Astrophysics · Physics 2007-05-23 S. Leon , G. Bergond , A. Vallenari

We present MeerKAT HI observations of ESO 137-001, a quintessential jellyfish galaxy with long multi-phase tails formed due to the interaction with the intra-cluster medium of its host galaxy cluster, ACO 3627. Our observations reveal the…

Astrophysics of Galaxies · Physics 2025-01-14 M. Ramatsoku , P. Serra , M. Sun , O. M. Smirnov , S. Makhathini

We present VLA HI observations and UH88 deep optical B- and R-band observations of the IR luminous merger Arp 299 (= NGC 3690 + IC 694). These data reveal a gas-rich, optically faint tidal tail with a length of over 180 kpc. The size of…

Astrophysics · Physics 2009-10-31 J. E. Hibbard , M. S. Yun

Galaxy interactions in groups can lead to intense starbursts and the activation of active galactic nuclei (AGNs). The stripped gas from the outer disk can lead to star-forming clumps along the tidal tails or sometimes tidal dwarf galaxies.…

Astrophysics of Galaxies · Physics 2024-09-25 Jyoti Yadav , Vikrant V. Jadhav

The environment plays an important role in shaping the evolution of cluster galaxies through mechanisms such as ram pressure stripping (RPS), whose effect may be enhanced in merging clusters. We investigate a complex of three galaxies UGC…

We report the discovery of COSMOS2020-635829 as a candidate jellyfish galaxy undergoing ram pressure stripping in a (proto)cluster at $z > 1$. High-resolution imaging from the James Webb Space Telescope reveals a symmetric stellar disk…

Astrophysics of Galaxies · Physics 2026-01-13 Ian D. Roberts , Michael L. Balogh , Visal Sok , Adam Muzzin , Michael J. Hudson , Pascale Jablonka

We present new VLA C+D-array HI observations and optical and NIR imaging of the well known interacting system NGC 4038/9, ``The Antennae''. The radio data reveal a wealth of gaseous sub-structure both within the main bodies of the galaxies…

Astrophysics · Physics 2009-11-07 J. E. Hibbard , J. M. van der Hulst , J. E. Barnes , R. M. Rich

We report the detection of a highly collimated linear emission-line structure in the spiral galaxy NGC\,232 through the use of integral field spectroscopy data from the All-weather MUse Supernova Integral field Nearby Galaxies (AMUSING)…

We present a study of the magnetic field properties of NGC 4038/9 (the `Antennae' galaxies), the closest example of a late stage merger of two spiral galaxies. Wideband polarimetric observations were performed using the Karl G. Jansky Very…

Astrophysics of Galaxies · Physics 2016-09-21 Aritra Basu , S. A. Mao , Amanda A. Kepley , Timothy Robishaw , Ellen G. Zweibel , John. S. Gallagher

The peculiar spiral NGC 2782 is the result of a minor merger with a mass ratio ~4:1 occurring ~200 Myr ago. This merger produced a molecular and HI rich, optically bright Eastern tail and an HI-rich, optically faint Western tail.…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Karen Knierman , Paul Scowen , Todd Veach , Christopher Groppi , Brendan Mullan , Iraklis Konstantopoulos , Patricia M. Knezek , Jane Charlton

A detailed study of the mixed-morphology galaxy pair CPG 29 (Arp 119, VV 347) shows spectacular spectroscopic peculiarities in the southern (spiral) component (Mkn 984) including a spatially resolved region, roughly aligned along the minor…

Astrophysics · Physics 2009-10-22 P. Marziani , W. C. Keel , D. Dultzin--Hacyan , J. W. Sulentic

This paper has been withdrawn by the author. A computer simulation of two galaxies, passing in parabolic orbits, was made to show their interaction and the tidal patterns formed. The galaxies were modelled as a point masses surrounded by 5…

Astrophysics of Galaxies · Physics 2012-10-31 Timothy Harrison

We analyze optical images and high-resolution, long-slit spectra of three planetary nebulae which possess collimated, low-ionization features. NGC 3918 is composed of an inner, spindle-shaped shell mildly inclined with respect to the plane…

Among the bent tail radio galaxies common in galaxy clusters are some with long, collimated tails (so-called head-tail galaxies) shaped by their interactions with the intracluster medium (ICM). Here we report the discovery of intricate…

We present smoothed particle hydrodynamic models of the interactions in the compact galaxy group, Stephan's Quintet. This work is extension of the earlier collisionless N-body simulations of Renaud et al. in which the large-scale stellar…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Jeong-Sun Hwang , Curtis Struck , Florent Renaud , Philip Appleton

GEMS and GOODS fields were examined to z~1.4 for galaxy interactions and mergers. The basic morphologies are familiar: antennae with long tidal tails, tidal dwarfs, and merged cores; M51-type galaxies with disk spirals and tidal arm…

Astrophysics · Physics 2009-06-23 Debra Meloy Elmegreen , Bruce G. Elmegreen , Thomas Ferguson , Brendan Mullan

We study the formation and evolution of the tidal tail released from a young Pleiades-like star cluster, due to expulsion of primordial gas in a realistic gravitational field of the Galaxy. The tidal tails (as well as clusters) are…

Astrophysics of Galaxies · Physics 2020-08-19 František Dinnbier , Pavel Kroupa

Among the various phenomena observed in interacting galaxies is the ejection due to tidal forces of material into the intergalactic medium and its subsequent rearranging which can lead to the formation of self-gravitating tidal dwarf…

Astrophysics · Physics 2014-10-13 P. -A. Duc , E. Brinks , V. Springel , B. Pichardo , P. Weilbacher , I. F. Mirabel

We investigate the effects of ram-pressure stripping on four galaxies within the massive, strong-lensing cluster MACS-J0138.0-2155 ($z=0.336$). Of these, three are classified as jellyfish galaxies, with significant elongated tails. Two of…

Astrophysics of Galaxies · Physics 2026-04-10 Catherine C. Gibson , Jackson H. O'Donnell , Tesla E. Jeltema