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Advances in extragalactic astronomy have prompted the development of increasingly realistic models which aim to describe the formation and evolution of galaxies. We review the philosophy behind one such technique, called semi-analytic…

Astrophysics · Physics 2009-11-07 C. M. Baugh , A. J. Benson , S. Cole , C. S. Frenk , C. Lacey

Galaxy evolution can be studied observationally by linking progenitor and descendant galaxies through an evolving cumulative number density selection. This procedure can reproduce the expected evolution of the median stellar mass from…

Astrophysics of Galaxies · Physics 2017-05-31 Bart Clauwens , Allison Hill , Marijn Franx , Joop Schaye

We analyse the correlations between continuum properties and emission line equivalent widths of star-forming and active galaxies from the Sloan Digital Sky Survey. Since upcoming large sky surveys will make broad-band observations only,…

Astrophysics of Galaxies · Physics 2016-01-22 Róbert Beck , László Dobos , Ching-Wa Yip , Alexander S. Szalay , István Csabai

We present the new ProFuse R package, a simultaneous spectral (ultraviolet to far infrared) and spatial structural decomposition tool that produces physical models of galaxies and their components. This combines the functionality of the…

Astrophysics of Galaxies · Physics 2022-04-20 A. S. G. Robotham , S. Bellstedt , S. P. Driver

Galactic bulges are complex systems. Once thought to be small-scale versions of elliptical galaxies, advances in astronomical instrumentation (spectroscopy in particular) has revealed a wealth of photometric and kinematic substructure in…

Astrophysics of Galaxies · Physics 2015-12-09 Jesús Falcón-Barroso

We present a chrono-cosmography project, aiming at the inference of the four dimensional formation history of the observed large scale structure from its origin to the present epoch. To do so, we perform a full-scale Bayesian analysis of…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-22 Jens Jasche , Florent Leclercq , Benjamin D. Wandelt

The long term goal of large-scale chemical tagging is to use stellar elemental abundances as a tracer of dispersed substructures of the Galactic disk. The identification of such lost stellar aggregates and the exploration of their chemical…

Astrophysics · Physics 2009-11-13 G. M. De Silva , K. C. Freeman , J. Bland-Hawthorn

We present a novel method to differentiate stream-like and shell-like tidal remnants of stellar systems in galactic halos using the density-based approach of the clustering algorithm AstroLink. While previous studies lean on observation,…

Astrophysics of Galaxies · Physics 2025-09-17 Viraj Ekanayaka , Smrithi Gireesh Babu , William H. Oliver , Geraint F. Lewis

We investigate the synthetic model of globular cluster (GC) systems of 17 compact massive galaxies (CMGs) from the Illustris TNG100 simulation to explore their connection with massive relic galaxies, systems that have undergone little…

Increasingly good statistical data on the galaxy population at high and low redshift enable the development of new phenomenological approaches to galaxy evolution based on application of the simplest continuity equations. This has given new…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Simon Lilly , Ying-jie Peng , Marcella Carollo , Alvio Renzini

Multi-period image collections are common in real-world applications. Cities are re-scanned for mapping, construction sites are revisited for progress tracking, and natural regions are monitored for environmental change. Such data form…

We present an image-based method for comparing the structural properties of galaxies produced in hydrodynamical simulations to real galaxies in the Sloan Digital Sky Survey. The key feature of our work is the introduction of extensive…

Astrophysics of Galaxies · Physics 2017-01-09 Connor Bottrell , Paul Torrey , Luc Simard , Sara L. Ellison

The Fornax cluster provides a uniquely compact laboratory to study the detailed history of early-type galaxies and the role played by environment in driving their evolution and their transformation from late-type galaxies. Using the superb…

The advent of integral field data has revolutionised the study of galaxy evolution. A key component of this is dynamical modelling methods which have allowed for crucial insights to be made from kinematic data. Despite this importance, most…

Astrophysics of Galaxies · Physics 2026-02-20 David A. Simon , Michele Cappellari , Shude Mao , Jiani Chu , Dandan Xu

Most complex systems are intrinsically dynamic in nature. The evolution of a dynamic complex system is typically represented as a sequence of snapshots, where each snapshot describes the configuration of the system at a particular instant…

Physics and Society · Physics 2016-12-30 Richard K. Darst , Clara Granell , Alex Arenas , Sergio Gómez , Jari Saramäki , Santo Fortunato

To ascertain whether photometric decompositions of galaxies into bulges and disks are astrophysically meaningful, we have developed a new technique to decompose spectral data cubes into separate bulge and disk components, subject only to…

Galactic archaeology--the study of stellar migration histories--provides insights into galaxy formation and evolution. However, establishing causal relationships between observable stellar properties and their birth conditions remains…

Astrophysics of Galaxies · Physics 2025-07-02 Zehao Jin , Yuxi Lu , Yuan-Sen Ting , Yujia Zheng , Tobias Buck

Triaxial dynamical models of massive galaxies observed in the ATLAS3D project can provide new insights into the complex evolutionary processes that shape galaxies. The ATLAS3D survey is ideal as the sample comprises a good mix of fast and…

Astrophysics of Galaxies · Physics 2023-05-17 Sabine Thater , Prashin Jethwa , Edward J. Lilley , Alice Zocchi , Giulia Santucci , Glenn van de Ven

We present a set of new analytic solutions aimed at self-consistently describing the spatially-averaged time evolution of the gas, stellar, metal, and dust content in an individual starforming galaxy hosted within a dark halo of given mass…

Astrophysics of Galaxies · Physics 2019-08-14 L. Pantoni , A. Lapi , M. Massardi , S. Goswami , L. Danese

The evolution of galactic disks from their early stages is dominated by gasdynamical effects such as gas infall, galactic fountains, and galactic outflows, and further more. The influence of these processes is only understandable in the…

Astrophysics · Physics 2015-05-13 Gerhard Hensler
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