Galaxy cluster mergers
نویسندگان
چکیده
منابع مشابه
Radio Observations of Galaxy Clusters: Connection to Cluster Mergers
The main component of the intracluster medium (ICM) in clusters of galaxies is represented by the X-ray emitting thermal plasma. In addition, the presence of relativistic electrons and largescale magnetic fields in a fraction of galaxy clusters is demonstrated by the detection of largescale synchrotron radio sources, which have no optical counterpart and no obvious connection to the cluster gal...
متن کاملHigh-resolution simulations of galaxy mergers: Resolving globular cluster formation
Massive star clusters observed in galaxy mergers are often suggested to be progenitors of globular clusters. To study this hypothesis, we performed the highest resolution simulation of a gas-rich galaxy merger so far. The formation of massive star clusters of 10 to 10 M⊙, triggered by the galaxy interaction, is directly resolved in this model. We show that these clusters are tightly bound struc...
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We numerically investigate stellar and gaseous dynamical evolution of mergers between five identical late-type disk galaxies with the special emphasis on star formation history and chemical evolution of multiple galaxy mergers. We found that multiple encounter and merging can trigger repetitive massive starbursts (typically ∼ 100 M yr−1) owing to the strong tidal disturbance and the resultant g...
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Radio continuum emission at 1.4 GHz was used to identify active galaxies in a sample of 20 nearby Abell clusters. The radio emission indicates either an active galactic nucleus or current star formation, and optical spectroscopy was used to evaluate which of these dominates for each of the radio-selected galaxies. In an analysis which parallels the blue fractions of Butcher-Oemler studies, we c...
متن کاملUnequal-mass galaxy mergers and the creation of cluster S0 galaxies
It is a longstanding and remarkable problem when and how red S0 galaxies were formed in clusters of galaxies. We here propose that the major mechanism for the S0 creation is galaxy merging between two spirals with unequal mass. Our numerical simulations demonstrate that galaxy merging exhausts a large amount of interstellar medium of two gas-rich spirals owing to the moderately enhanced star fo...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2009
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2009.15290.x