English
Related papers

Related papers: Galaxy Merger Rates up to z $\sim$ 3 using a Bayes…

200 papers

The process of galaxy evolution over cosmic time is not yet fully understood, since there is a debate on the impact of galaxy collisions on the star formation and metallicity. The local environment of the galaxy mergers could also have a…

Astrophysics of Galaxies · Physics 2025-09-12 Bendeguz Koncz , Istvan Horvath , András Péter Joó , Andreas Burkert , L. Viktor Tóth

Aims. We present the application of a fully connected neural network (NN) for galaxy merger identification using exclusively photometric information. Our purpose is not only to test the method's efficiency, but also to understand what…

Astrophysics of Galaxies · Physics 2023-01-25 L. E. Suelves , W. J. Pearson , A. Pollo

The observational data of high redshift galaxies become increasingly abundant, especially since the operation of the James Webb Space Telescope (JWST), which allows us to verify and optimize the galaxy formation model at high redshifts. In…

Astrophysics of Galaxies · Physics 2023-12-11 Kemeng Li , Zhen Jiang , Ping He , Qi Guo , Jie Wang

Mergers are fundamental to our understanding of the processes driving the evolution of the structure and morphology of galaxies, star formation, AGN activity, and the redistribution of stellar mass in the Universe. Determining the fraction…

Quantifying the contribution of mergers to the stellar mass of galaxies is key for constraining the mechanisms of galaxy assembly across cosmic time. However, the mapping between observable galaxy properties and merger histories is not…

We estimate the evolution of the galaxy-galaxy merger fraction for $M_\star>10^{10.5}M_\odot$ galaxies over $0.25<z<1$ in the $\sim$18.6 deg$^2$ deep CLAUDS+HSC-SSP surveys. We do this by training a Random Forest Classifier to identify…

Astrophysics of Galaxies · Physics 2021-06-09 Nathalie Thibert , Marcin Sawicki , Andy Goulding , Stephane Arnouts , Jean Coupon , Stephen Gwyn

Galaxy mergers are crucial to understanding galaxy evolution, therefore we must determine their observational signatures to select them from large IFU galaxy samples such as MUSE and SAMI. We employ 24 high-resolution idealised…

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…

Recent independent results from numerical simulations and observations have shown that brightest cluster galaxies (BCGs) have increased their stellar mass by a factor of almost two between z~0.9 and z~0.2. The numerical simulations further…

The science behind galaxy interaction and mergers has a fundamental role and gives us an insight into galaxy formation and its evolution. Fluctuating angular momentum is responsible for extraordinary events like polar rings, tidal tails,…

Astrophysics of Galaxies · Physics 2021-12-24 Adarsh Mahor , Janvita Reddy , Amitesh Singh , Shashwat Singh

Identifying mergers from observational data has been a crucial aspect of studying galaxy evolution and formation. Tidal features, typically fainter than 26 ${\rm mag\,arcsec^{-2}}$, exhibit a diverse range of appearances depending on the…

Astrophysics of Galaxies · Physics 2026-02-04 Yeonkyung Lee , Hyunmi Song , Jihye Shin , Sungryong Hong , Jaehyun Lee , Kyungwon Chun

We present results of a statistical study of the cosmic evolution of the mass dependent major-merger rate since z=1. A stellar mass limited sample of close major-merger pairs (the CPAIR sample) was selected from the archive of the COSMOS…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 C. Kevin Xu , Yinghe Zhao , N. Scoville , P. Capak , N. Drory , Y. Gao

Galaxy mergers play a crucial role in shaping the morphology, the star formation, and the mass growth of galaxies across cosmic time. While mergers have been extensively investigated in the local Universe, the evolution of their frequency…

Using the TNG50 cosmological simulation and observations from the Kilo-Degree Survey (KiDS), we investigate the connection between galaxy mergers and optical morphology in the local Universe over a wide range of galaxy stellar masses…

We employ a high-resolution LCDM N-body simulation to present merger rate predictions for dark matter halos and investigate how common merger-related observables for galaxies--such as close pair counts, starburst counts, and the…

Astrophysics · Physics 2009-11-14 Kyle R. Stewart , James S. Bullock , Elizabeth J. Barton , Risa H. Wechsler

The cessation of star formation in galaxies, known as 'quenching', is a complex, multi-scale process which has been theorized to be linked to galaxy mergers. In this paper, we investigate the potential role of mergers in quenching galaxies…

Astrophysics of Galaxies · Physics 2026-03-16 Camilo A. Casimiro , Asa F. L. Bluck , Paul Goubert , Thomas Pinto Franco , Joanna M. Piotrowska

Stellar bars are a common morphological feature of spiral galaxies. While it is known that they can form in isolation, or be induced tidally, few studies have explored the production of stellar bars in galaxy merging. We look to investigate…

Astrophysics of Galaxies · Physics 2020-09-16 Mitchell Cavanagh , Kenji Bekki

Simulations of nearby (0.015 < z < 0.025) SDSS galaxies have been used to reproduce as accurately as possible the appearance that they would have on COSMOS ACS images if they had been observed at z ~ 0.7 and z ~ 1.2. By adding the SDSS…

Mergers between galaxy clusters are an important stage in the formation of the large-scale structure of the Universe. Some of the mergers show a spectacular bow shock that formed as a result of recent passage of a smaller cluster through a…

Astrophysics of Galaxies · Physics 2023-05-24 Ewa L. Lokas

We present the largest, most homogeneous catalogue of merging galaxies in the nearby universe obtained through the Galaxy Zoo project - an interface on the world-wide web enabling large-scale morphological classification of galaxies through…