Results 21 to 30 of about 48,563 (336)
THE METALLICITY EVOLUTION OF INTERACTING GALAXIES [PDF]
The Astrophysical Journal, 2012 Nuclear inflows of metal-poor interstellar gas triggered by galaxy interactions can account for the systematically lower central oxygen abundances observed in local interacting galaxies. Here, we investigate the metallicity evolution of a large set of simulations of colliding galaxies.
Torrey, Paul +3 more
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Galaxy Interactions: The Hi Signature [PDF]
Symposium - 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 +2 more sources
Hidden Interaction in SBO galaxies [PDF]
International Astronomical Union Colloquium, 1990 Galaxies, like plants, show a large variety of grafts: an individual of some type connects physically with a neighborhood of same or different type. The effects of these interactions between galaxies have a broad range of morphologies depending, among other quantities, on the distance of the closest approach between systems and the relative size of the
GALLETTA, GIUSEPPE +3 more
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Mid-Infrared Evidence for Accelerated Evolution in Compact Group Galaxies [PDF]
, 2009 We find evidence for accelerated evolution in compact group galaxies from the distribution in mid-infrared colorspace of 42 galaxies from 12 Hickson Compact Groups (HCGs) compared to the the distributions of several other samples including the LVL+SINGS ...
Ann E. Hornschemeier +32 more
core +3 more sources
Interactions, Starbursts, and Star Formation
Galaxies, 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
The 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
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Nests of Interacting Galaxies: What is it? [PDF]
Symposium - International Astronomical Union, 1987 Kinematical and photometric studies of nests of interacting galaxies are described. Velocity fields of 22 nests were obtained using the 6-meter telescope of the Special Astronomical Observatory of Sciences Academy of USSR. UBV-photometry carried out with 125-cm telescope of Sternberg Institute has shown that the majority of nests is blue and undergoes ...
V.P. Arkhipova +3 more
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Evolution of Galaxies Through Their Interactions [PDF]
Symposium - International Astronomical Union, 1996 We investigated how the encounters between galaxies change their mass M and velocity dispersion σ. We carried out a series of direct N-body simulation of encounters of two spherical galaxies. In Figure 1, the relative change of energy ΔE/E are plotted against that of mass ΔM/M for various initial conditions.
Y. Funato, J. Marino
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Simulated Galaxy Interactions as Probes of Merger Spectral Energy Distributions [PDF]
, 2014 We present the first systematic comparison of ultraviolet-millimeter spectral energy distributions (SEDs) of observed and simulated interacting galaxies.
Ashby, Matthew L. N. +7 more
core +2 more sources
Characterization of Bars Induced by Interactions
Galaxies, 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