Results 91 to 100 of about 113,929 (193)

Asymmetries in stellar streams induced by a galactic merger

open access: yesAstronomy & Astrophysics
Stellar streams are sensitive to perturbations from, for example, giant molecular clouds, bars and spiral arms, infalling dwarf galaxies, or globular clusters which can imprint gaps, clumps, spurs, and asymmetries in tails.
Guillaume Claire   +8 more
doaj   +1 more source

Living with Neighbors. VI. Unraveling the Dual Impact of Bars on Star Formation in Paired Galaxies Using DESI

open access: yesThe Astrophysical Journal
We present a comprehensive investigation into the influence of stellar bars on star formation (SF) in galaxy pairs, using a large sample of low-redshift galaxies (0.02 < z < 0.08) from the DESI Legacy Imaging Surveys Data Release 8. Our analysis examines
Woong-Bae G. Zee, Suk-Jin Yoon
doaj   +1 more source

Interacting and Merging Galaxies

open access: yes, 1996
I will present a review of some of the many recent developments within the exciting and rapidly evolving field of Interacting and Merging Galaxies. I will touch both on observations and on theory, focussing on those aspects where galaxy evolution modelling may possibly contribute to our understanding.
openaire   +2 more sources

Low-mass Galaxy Interactions Trigger Black Hole Activity

open access: yesThe Astrophysical Journal Letters
The existence of high- z overmassive supermassive black holes represents a major conundrum in our understanding of black hole evolution. In this Letter, we probe from the observational point of view how early Universe environmental conditions could have ...
Marko Mićić   +5 more
doaj   +1 more source

A group of merging galaxies falling into Abell 2142

open access: yesAstronomy & Astrophysics
Galaxy clusters produce a very hostile environment for galaxies: their gas gets stripped by ram pressure, they undergo galaxy interactions, and their star formation is quenched.
Anitha Shaji Aashiya   +5 more
doaj   +1 more source

Morphology and Kinematics of the Gas in M51: How Interaction with NGC 5195 Has Molded the Structure of Its Arms

open access: yesThe Astrophysical Journal
The Whirlpool Galaxy is a well-studied grand design galaxy with two major spiral arms, and a large satellite NGC 5195. The arms both show long uniform sections with perturbations (“kinks” or sharp turns) in specific regions.
Joan Font   +4 more
doaj   +1 more source

Bar Formation and Destruction in the FIRE-2 Simulations

open access: yesThe Astrophysical Journal
The physical mechanisms responsible for bar formation and destruction in galaxies remain a subject of debate. While we have gained valuable insight into how bars form and evolve from isolated idealized simulations, in the cosmological domain, galactic ...
Sioree Ansar   +7 more
doaj   +1 more source

WALLABY Pilot Survey: Star Formation Enhancement and Suppression in Gas-rich Galaxy Pairs

open access: yesThe Astrophysical Journal
Galaxy interactions can significantly affect the star formation in galaxies, but it remains a challenge to achieve a consensus on the star formation rate (SFR) enhancement in galaxy pairs. Here, we investigate the SFR enhancement of gas-rich galaxy pairs
Qifeng Huang   +18 more
doaj   +1 more source

Modeling Tidal Streams and Tidal Tails around Galaxies Using Deep Wendelstein Imaging Data

open access: yesThe Astrophysical Journal
From the Λ cold dark matter paradigm, it is expected that galaxies merge and grow in their environments. These processes form various tidal features depending on the merger mass ratio, orbital parameters, and gas richness. We inspected 170 $g^{\prime} $ -
Jan-Niklas Pippert   +2 more
doaj   +1 more source

High-resolution Optical IFU Spectroscopy of the Complex Galaxy Merger II Zw 096

open access: yesThe Astrophysical Journal
Luminous and ultraluminous IR galaxies are critical for investigating feedback mechanisms due to a combination of intense star formation episodes and active galactic nuclei (AGN), particularly in the context of complex galaxy interactions.
Clemente Riesco   +22 more
doaj   +1 more source

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