Results 11 to 20 of about 6,160 (287)

Galaxy mergers in a fractal cosmology

European Physical Journal C: Particles and Fields
This 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, Osvaldo L. Santos-Pereira, Marcelo B. Ribeiro   +2 more
doaj   +4 more sources

Deep learning for galaxy mergers in the galaxy main sequence [PDF]

Proceedings of the International Astronomical Union, 2019
AbstractStarburst galaxies are often found to be the result of galaxy mergers. As a result, galaxy mergers are often believed to lie above the galaxy main sequence: the tight correlation between stellar mass and star formation rate. Here, we aim to test this claim.Deep learning techniques are applied to images from the Sloan Digital Sky Survey to ...
Pearson, W.J., Wang, L., Trayford, J.W., Petrillo, C.E., Tak, F.F.S. van der   +4 more
openaire   +5 more sources

Real galaxy mergers from galaxy pair catalogues [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT Mergers of galaxies are extremely violent events shaping their evolution. Such events are thought to trigger starbursts and, possibly, black hole accretion. Nonetheless, it is still not clear how to know the fate of a galaxy pair from the data available at a given time, limiting our ability to constrain the exact role of mergers.
Pfister, Hugo, Dotti, Massimo, Laigle, Clotilde, Dubois, Yohan, Volonteri, Marta   +4 more
core   +6 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, Macciò, Andrea V., Hirschmann, Michaela, de Lucia, Gabriella, Kannan, Rahul, Somerville, Rachel S., Wilman, Dave   +6 more
openaire   +6 more sources

Galaxy Zoo: Major Galaxy Mergers Are Not a Significant Quenching Pathway* [PDF]

The Astrophysical Journal, 2017
Abstract We use stellar mass functions to study the properties and the significance of quenching through major galaxy mergers. In addition to SDSS DR7 and Galaxy Zoo 1 data, we use samples of visually selected major galaxy mergers and post-merger galaxies.
Weigel, A, Schawinski, K, Caplar, N, Carpineti, A, Hart, R, Kaviraj, S, Keel, W, Kruk, S, Lintott, C, Nichol, R, Simmons, B, Smethurst, R   +11 more
openaire   +6 more sources

Jet Interaction with Galaxy Cluster Mergers

The Astrophysical Journal
Active galactic nucleus (AGN) bubbles in cool-core galaxy clusters are believed to facilitate the transport of cosmic-ray electrons (CRe) throughout the cluster.
P. Domínguez-Fernández, J. ZuHone, R. Weinberger, E. Bellomi, L. Hernquist, P. Nulsen, G. Brunetti   +6 more
doaj   +3 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., Phleps, S., Somerville, R., Wolf, C., Borch, A., Meisenheimer, K.   +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., Ponman, T. J., Read, A. M.   +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, Keunho Kim, Joon Hyeop Lee, Minjin Kim, Yun-Kyeong Sheen, Jinsu Rhee, Chang H Ree, Hyunjin Jeong, Luis C Ho, Jaemann Kyeong, Eon-Chang Sung, Byeong-Gon Park, Sukyoung K Yi   +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., Tacconi, L. J., Davies, R. I., Neri, R., Smail, I., Chapman, S. C., Genzel, R., Cox, P., Greve, T. R., Ivison, R. J., Blain, A., Bertoldi, F., Omont, A.   +12 more
openaire   +4 more sources