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Related papers: Evolution of the galaxy merger rate in model unive…

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We use a large sample of $\sim 350,000$ galaxies constructed by combining the UKIDSS UDS, VIDEO/CFHT-LS, UltraVISTA/COSMOS and GAMA survey regions to probe the major merging histories of massive galaxies ($>10^{10}\ \mathrm{M}_\odot$) at…

Calculating the galaxy merger rate requires both a census of galaxies identified as merger candidates, and a cosmologically-averaged `observability' timescale T_obs(z) for identifying galaxy mergers. While many have counted galaxy mergers…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Jennifer M. Lotz , Patrik Jonsson , T. J. Cox , Darren Croton , Joel R. Primack , Rachel S. Somerville , Kyle Stewart

Recent observations of UV-/optically selected, massive star forming galaxies at z~2 indicate that the baryonic mass assembly and star formation history is dominated by continuous rapid accretion of gas and internal secular evolution, rather…

As the sensitivity of current and future gravitational-wave detectors improves, it will become possible to measure the evolution of the binary black hole merger rate with redshift. Here, we combine detailed fits to state-of-the-art…

High Energy Astrophysical Phenomena · Physics 2018-10-17 Carl L. Rodriguez , Abraham Loeb

Standard LCDM predicts that the major merger rate of galaxy-size dark matter halos rises rapidly with redshift. The average number of close companions per galaxy, Nc, is often used to infer the galaxy merger rate, however, recent…

We present a measurement of the galaxy merger fraction and number density from observations in the Hubble Ultra Deep Field for 0.5<z<2.5. We fit the combination of broadband data and slitless spectroscopy of 1308 galaxies with stellar…

Astrophysics · Physics 2009-11-13 R. E. Ryan , S. H. Cohen , R. A. Windhorst , J. Silk

We present image-based evolution of galaxy mergers from the Illustris cosmological simulation at 12 time-steps over 0.5 < z < 5. To do so, we created approximately one million synthetic deep Hubble Space Telescope and James Webb Space…

We present a model for merger-driven evolution of the mass function for massive galaxies and their central supermassive black holes at late times. We discuss the current observational evidence in favor of merger-driven massive galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2017-02-22 Sean T. McWilliams , Jeremiah P. Ostriker , Frans Pretorius

Using deep infrared observations conducted with the CISCO imager on the Subaru Telescope, we investigate the field-corrected pair fraction and the implied merger rate of galaxies in redshift survey fields with Hubble Space Telescope…

We study the infall of a subhalo in its parent halo due to dynamical friction. Using expected mass and spatial distributions of subhaloes, in unison with the derived infall time-scale, we calculate the expected merger stellar mass growth…

Astrophysics of Galaxies · Physics 2018-11-05 Filip Huško

We use a highly complete subset of the GAMA-II redshift sample to fully describe the stellar mass dependence of close-pairs and mergers between 10^8 Msun and 10^12 Msun. Using the analytic form of this fit we investigate the total stellar…

We make use of four galaxy catalogs based on four different semi-analytical models (SAMs) implemented in the Millennium simulation to study the environmental effects and the model dependence of galaxy merger rate. We begin the analyses by…

Cosmology and Nongalactic Astrophysics · Physics 2014-05-30 Hung-Yu Jian , Lihwai Lin , Tzihong Chiueh

We present the results of a series of empirical computations regarding the role of major mergers in forming the stellar masses of modern galaxies based on measurements of galaxy merger and star formation histories from z~0.5-3. We…

Astrophysics · Physics 2009-11-13 Christopher J. Conselice

As galaxy formation and evolution over long cosmic time-scales depends to a large degree on the structure of the universe, the assembly history of galaxies is potentially a powerful approach for learning about the universe itself. In this…

Astrophysics of Galaxies · Physics 2015-06-22 Christopher J. Conselice , Asa F. L. Bluck , Alice Mortlock , David Palamara , Andrew J. Benson

This paper presents direct evidence for hierarchical galaxy assembly out to redshifts z ~ 3. We identify major mergers using the model-independent CAS (concentration, asymmetry, clumpiness) physical morphological system on galaxies…

We compile a number of observations to estimate the time-averaged rate of formation or buildup of red sequence galaxies, as a function of mass and redshift. Comparing this with the mass functions of mergers and quasar hosts, and…

Astrophysics · Physics 2011-02-11 Philip F. Hopkins , Kevin Bundy , Lars Hernquist , Richard S. Ellis

Galaxy mergers are fundamental drivers of galaxy evolution and black hole (BH) growth across cosmic time. We use the Horizon-AGN simulation to investigate the fraction of galaxy pairs, the merger fraction, and the galaxy merger rate over a…

Astrophysics of Galaxies · Physics 2026-05-14 Ecaterina Leonova , Marta Volonteri , Clotilde Laigle , Samaya Nissanke , Pascal A. Oesch , Yohan Dubois

We measure the mass growth rate by merging for a wide range of galaxy types. We present the small-scale (0.014 < r < 11 h70^{-1} Mpc) projected cross-correlation functions w(rp) of galaxy subsamples from the spectroscopic sample of the NYU…

Astrophysics of Galaxies · Physics 2015-05-28 Tao Jiang , David W. Hogg , Michael R. Blanton