Results 1 to 10 of about 267,309 (249)
Galaxy mergers in a fractal cosmology [PDF]
European Physical Journal C: Particles and FieldsThis work discusses the influence of galaxy mergers in the evolution of a parabolic Lemaître–Tolman–Bondi (LTB) cosmology with simultaneous big bang endowed with two consecutive single fractal galaxy distributions systems possessing fractal dimension D ...
Bruno J. Souza +2 more
doaj +4 more sources
The Merger Rate of Massive Galaxies [PDF]
The Astrophysical Journal, 2006 We calculate the projected two point correlation function for samples of luminous and massive galaxies in the COMBO-17 photometric redshift survey, focusing particularly on the amplitude of the correlation function at small projected radii and exploring the constraints such measurements can place on the galaxy merger rate.
Bell, E. +5 more
openaire +4 more sources
The Chandra view of galaxy mergers [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 From a Chandra survey of nine interacting galaxy systems the evolution of X-ray emission during the merger process has been investigated. It is found that the X-ray luminosity peaks ~300 Myr before nuclear coalescence, and then dips, even though we know that rapid and increasing activity is still taking place at this time.
Brassington, N. J. +2 more
openaire +3 more sources
Impact of galaxy mergers on the colours of cluster galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 ABSTRACT We examine the ultraviolet and optical colours of 906 cluster galaxies from the KASI-Yonsei Deep Imaging Survey of Clusters (KYDISC). The sample has been divided into two categories, morphologically disturbed and undisturbed galaxies, based on the visual signatures related to recent mergers. We find that galaxies with signatures
Sree Oh +12 more
openaire +2 more sources
MOST SUBMILLIMETER GALAXIES ARE MAJOR MERGERS [PDF]
The Astrophysical Journal, 2010 We analyse subarcsecond resolution interferometric CO line data for twelve sub-millimetre-luminous (S850um > 5mJy) galaxies with redshifts between 1 and 3, presenting new data for four of them. Morphologically and kinematically most of the twelve systems appear to be major mergers. Five of them are well-resolved binary systems, and seven are compact
Engel, H. +12 more
openaire +4 more sources
Dependence of stellar substructures in M31 type galaxy on satellite morphology in galaxy mergers [PDF]
Serbian Astronomical Journal, 2022 Stellar streams and shells are observed in halos of spiral galaxies. In this paper, we investigated the formation of these structures due to mergers between the host spiral galaxy and its dwarf satellite galaxies.
Milošević S.
doaj +1 more source
Galaxy Zoo: Mergers – Dynamical models of interacting galaxies [PDF]
Monthly 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, A +8 more
openaire +4 more sources
GW190521 from the Merger of Ultradwarf Galaxies [PDF]
Physical Review Letters, 2021 8 pages, 4 ...
Antonella Palmese +1 more
openaire +3 more sources
On the dependence of galaxy morphologies on galaxy mergers [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 The distribution of galaxy morphological types is a key test for models of galaxy formation and evolution, providing strong constraints on the relative contribution of different physical processes responsible for the growth of the spheroidal components.
Fontanot, Fabio +6 more
openaire +4 more sources
Mergers and galaxy assembly [PDF]
The 9th astrophysics conference: After the dark ages, when galaxies were young (the Universe at 2<Z<5), 1999 Theoretical considerations and observational data support the idea that mergers were more frequent in the past. At redshifts z = 2 to 5, violent interactions and mergers may be implicated by observations of Lyman-break galaxies, sub-mm starbursts, and active galactic nuclei.
openaire +2 more sources