Results 21 to 30 of about 2,152 (196)

Interactions, Starbursts, and Star Formation

open access: yesGalaxies, 2015
We study how interactions between galaxies affect star formation within them by considering a sample of almost 1500 of the nearest galaxies, all within a distance of ∼45 Mpc. We use the far-IR emission to define the massive star formation rate (SFR), and
Johan H. Knapen, Miguel Querejeta
doaj   +1 more source

MOSEL Survey: JWST Reveals Major Mergers/strong Interactions Drive the Extreme Emission Lines in the Early Universe

open access: yesThe Astrophysical Journal Letters, 2023
Extreme emission line galaxies (EELGs), where nebular emissions contribute 30%–40% of the flux in certain photometric bands, are ubiquitous in the early Universe ( z > 6).
Anshu Gupta   +9 more
doaj   +1 more source

Observations of interacting galaxies NGC 2341 and NGC 2342 in X-ray band

open access: yesВісник Астрономічної школи, 2018
The study of radiation of the interacting galaxies in different ranges enables to identify various processes occurring in them. The most active processes (such as star birth, material accretion onto the black holes, burster flashes, etc.) cause the ...
A. V. Tugay   +2 more
doaj   +1 more source

DDO68 C: The Actual Appearance of a Ghost Satellite Dwarf through Adaptive Optics at the Large Binocular Telescope

open access: yesThe Astrophysical Journal Letters, 2023
Through adaptive optics (AO) imaging with the SOUL+LUCI instrument at the Large Binocular Telescope we were able to resolve, for the first time, individual stars in the gas-rich galaxy DDO68 C. This system was already suggested to be interacting with the
Francesca Annibali   +9 more
doaj   +1 more source

Galaxy Zoo: Mergers – Dynamical models of interacting galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2016
The dynamical history of most merging galaxies is not well understood. Correlations between galaxy interaction and star formation have been found in previous studies, but require the context of the physical history of merging systems for full insight into the processes that lead to enhanced star formation.
Holincheck, Anthony J.   +8 more
openaire   +6 more sources

Are Disks of Satellites Comprised of Tidal Dwarf Galaxies?

open access: yesGalaxies, 2021
It was found that satellites of nearby galaxies can form flattened co-rotating structures called disks of satellites or planes of satellites. Their existence is not expected by the current galaxy formation simulations in the standard dark matter-based ...
Michal Bílek   +3 more
doaj   +1 more source

Characterization of Bars Induced by Interactions

open access: yesGalaxies, 2016
Whether the formation of bars is triggered by interactions or by internal processes has been discussed for many decades. In this work, we study differences between both mechanisms by means of numerical simulations.
Inma Martinez-Valpuesta   +2 more
doaj   +1 more source

Galaxy Interactions: The Hi Signature [PDF]

open access: yesSymposium - International Astronomical Union, 1999
HI observations are an excellent tool for investigating tidal interactions. Ongoing major and minor interactions which can lead to traumatic mergers or to accretion and the triggering of star formation, show distinct HI signatures. Interactions and mergers in the recent past can also be recognized in the HI structure and kinematics.
openaire   +3 more sources

Galaxy Zoo: quantifying morphological indicators of galaxy interaction★ [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2012
We use Galaxy Zoo 2 visual classifications to study the morphological signatures of interaction between similar-mass galaxy pairs in the Sloan Digital Sky Survey. We find that many observable features correlate with projected pair separation; not only obvious indicators of merging, disturbance and tidal tails, but also more regular features, such as ...
Kevin Schawinski   +12 more
openaire   +5 more sources

GOALS-JWST: Pulling Back the Curtain on the AGN and Star Formation in VV 114

open access: yesThe Astrophysical Journal Letters, 2023
We present results from the James Webb Space Telescope Director’s Discretionary Time Early Release Science program 1328 targeting the nearby, luminous infrared galaxy, VV 114.
J. Rich   +35 more
doaj   +1 more source

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