Results 31 to 40 of about 2,162,294 (370)
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
openaire +3 more sources
The Mismeasure of Mergers: Revised Limits on Self-interacting Dark Matter in Merging Galaxy Clusters [PDF]
Astrophysical Journal, 2017 In an influential recent paper, Harvey et al. derive an upper limit to the self-interaction cross section of dark matter (DM) ( σ DM / m < 0.47 cm2 g−1 at 95% confidence) by averaging the DM–galaxy offsets in a sample of merging galaxy clusters.
D. Wittman, N. Golovich, W. Dawson
semanticscholar +1 more source
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
openaire +2 more sources
UNCOVERING THE DEEPLY EMBEDDED ACTIVE GALACTIC NUCLEUS ACTIVITY IN THE NUCLEAR REGIONS OF THE INTERACTING GALAXY Arp 299 [PDF]
, 2013 We present mid-infrared (MIR) 8–13 μm spectroscopy of the nuclear regions of the interacting galaxy Arp 299 (IC 694+NGC 3690) obtained with CanariCam (CC) on the 10.4 m Gran Telescopio Canarias (GTC).
A. Alonso-Herrero +16 more
semanticscholar +1 more source
Modelling ISO Galaxy Counts with Luminosity and Merger Rate Evolution [PDF]
, 1998 We model galaxy evolution in the 6.75 and 15 micron passbands of the ISO satellite, by combining models of galaxy evolution at optical wavelengths (which are consistent with the optical galaxy counts) with observed spectral energy distributions in the ...
Eales, Steve, Roche, Nathan
core +2 more sources
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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AN INTERACTING GALAXY SYSTEM ALONG A FILAMENT IN A VOID [PDF]
, 2013 Cosmological voids provide a unique environment for the study of galaxy formation and evolution. The galaxy population in their interiors has properties significantly different from average field galaxies. As part of our Void Galaxy Survey (VGS), we have
B. Beygu +4 more
semanticscholar +1 more source
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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The diverse density profiles of galaxy clusters with self-interacting dark matter plus baryons [PDF]
, 2017 We present the first simulated galaxy clusters (M200 > 1014 M⊙) with both self-interacting dark matter (SIDM) and baryonic physics. They exhibit a greater diversity in both dark matter and stellar density profiles than their counterparts in simulations ...
A. Robertson +24 more
semanticscholar +1 more source