The role of mergers and halo spin in shaping galaxy morphology

V Rodriguez-Gomez, LV Sales, S Genel… - Monthly Notices of …, 2017 - academic.oup.com
Mergers and the spin of the dark matter halo are factors traditionally believed to determine
the morphology of galaxies within a Λ cold dark matter (ΛCDM) cosmology. We study this …

Host galaxies of luminous z ∼ 0.6 quasars: major mergers are not prevalent at the highest AGN luminosities

C Villforth, T Hamilton, MM Pawlik… - Monthly Notices of …, 2017 - academic.oup.com
Galaxy interactions are thought to be one of the main triggers of active galactic nuclei (AGN),
especially at high luminosities, where the accreted gas mass during the AGN lifetime is …

The unorthodox evolution of major merger remnants into star-forming spiral galaxies

M Sparre, V Springel - Monthly Notices of the Royal …, 2017 - academic.oup.com
Galaxy mergers are believed to play a key role in transforming star-forming disc galaxies
into quenched ellipticals. Most of our theoretical knowledge about such morphological …

Variations of the stellar initial mass function in semi-analytical models: implications for the mass assembly and the chemical enrichment of galaxies in the gaea model

F Fontanot, G De Lucia, M Hirschmann… - Monthly Notices of …, 2016 - academic.oup.com
In this paper, we investigate the implications of the integrated galaxy-wide stellar initial mass
function (IGIMF) approach in the framework of the semi-analytical model gaea (GAlaxy …

Unveiling the (in) consistencies among the galaxy stellar mass function, star formation histories, satellite abundances and intracluster light from a semi-empirical …

H Fu, F Shankar, M Ayromlou… - Monthly Notices of …, 2024 - academic.oup.com
In a hierarchical, dark matter-dominated Universe, stellar mass functions (SMFs), galaxy
merger rates, star formation histories (SFHs), satellite abundances, and intracluster light …

TwO Parameters Semi Empirical Model (TOPSEM): Galaxy Evolution and Bulge/Disk Dicothomy from Two-stage Halo Accretion

L Boco, A Lapi, F Shankar, H Fu… - The Astrophysical …, 2023 - iopscience.iop.org
In recent years, increasing attention has been devoted to semi-empirical, data-driven
models to tackle some aspects of the complex and still largely debated topic of galaxy …

Lower AGN abundance in galaxy clusters at z< 0.5

HD Mishra, X Dai - The Astronomical Journal, 2020 - iopscience.iop.org
Most galaxies in clusters have supermassive black holes (SMBHs) at their center, and a
fraction of those SMBHs show strong activity. These active galactic nuclei (AGNs) are an …

Testing the key role of the stellar mass–halo mass relation in galaxy merger rates and morphologies via DECODE, a novel Discrete statistical sEmi-empiriCal mODEl

H Fu, F Shankar, M Ayromlou, M Dickson… - Monthly Notices of …, 2022 - academic.oup.com
The relative roles of mergers and star formation in regulating galaxy growth are still a matter
of intense debate. We here present our decode, a new Discrete statistical sEmi-empiriCal …

The growth of discs and bulges during hierarchical galaxy formation–I. Fast evolution versus secular processes

C Tonini, SJ Mutch, DJ Croton… - Monthly Notices of the …, 2016 - academic.oup.com
We present a theoretical model for the evolution of mass, angular momentum and size of
galaxy discs and bulges, and we implement it into the semi-analytic galaxy formation code …

Predicting fully self-consistent satellite richness, galaxy growth, and star formation rates from the STatistical sEmi-Empirical modeL steel

PJ Grylls, F Shankar, J Leja, N Menci… - Monthly Notices of …, 2020 - academic.oup.com
Observational systematics complicate comparisons with theoretical models limiting
understanding of galaxy evolution. In particular, different empirical determinations of the …