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We present SimSpin, a new, public, software framework for generating integral field spectroscopy (IFS) data cubes from N-body/hydrodynamical simulations of galaxies, which can be compared directly with observational datasets. SimSpin…

Astrophysics of Galaxies · Physics 2020-05-26 K. E. Harborne , C. Power , A. S. G. Robotham

Infrared and nebular lines provide some of our best probes of the physics regulating the properties of the interstellar medium (ISM) at high-redshift. However, interpreting the physical conditions of high-redshift galaxies directly from…

Numerical simulations have become a necessary tool to describe the complex interactions among the different processes involved in galaxy formation and evolution, unfeasible via an analytic approach. The last decade has seen a great effort…

Astrophysics of Galaxies · Physics 2017-07-19 Alessandro Lupi , Marta Volonteri , Joseph Silk

We present a new approach based on Supervised Machine Learning (SML) algorithms to infer key physical properties of galaxies (density, metallicity, column density and ionization parameter) from their emission line spectra. We introduce a…

Astrophysics of Galaxies · Physics 2016-12-21 Graziano Ucci , Andrea Ferrara , Simona Gallerani , Andrea Pallottini

We perform the first direct cosmological and astrophysical parameter inference from the combination of galaxy luminosity functions and colours using a simulation based inference approach. Using the Synthesizer code we simulate the dust…

We present cosmological hydrodynamical simulations of galaxy clusters aimed at studying the process of metal enrichment of the intra--cluster medium (ICM). These simulations have been performed by implementing a detailed model of chemical…

Astrophysics · Physics 2009-11-13 L. Tornatore , S. Borgani , K. Dolag , F. Matteucci

Current constraints on models of galaxy evolution rely on morphometric catalogs extracted from multi-band photometric surveys. However, these catalogs are altered by selection effects that are difficult to model, that correlate in non…

Instrumentation and Methods for Astrophysics · Physics 2017-09-06 Sébastien Carassou , Valérie de Lapparent , Emmanuel Bertin , Damien Le Borgne

We present the 'simage' software suite for the simulation of artificial extragalactic images, based empirically around real observations of the Hubble Ultra Deep Field (UDF). The simulations reproduce galaxies with realistic and complex…

Instrumentation and Methods for Astrophysics · Physics 2015-05-19 Benjamin M. Dobke , David E. Johnston , Richard Massey , F. William High , Matthew Ferry , Jason Rhodes , R. Ali Vanderveld

We present GalSyn (Galaxy Synthesizer), a modular and flexible Python package for generating synthetic spectrophotometric observations from hydrodynamical galaxy simulations. GalSyn employs a particle-by-particle spectral modeling approach…

We present FORECAST, a new flexible and adaptable software package that performs forward modeling of the output of any cosmological hydrodynamical simulations to create a wide range of realistic synthetic astronomical images. With…

The combination of deep imaging data and kinematic measurements in galaxy outskirts promises to reveal extensive insights into the structure and history of individual galaxies. From a census of tidal features around galaxies from the…

Astrophysics of Galaxies · Physics 2026-04-17 Lucas M. Valenzuela , Johannes Stoiber , Rhea-Silvia Remus

We use a suite of hydrodynamics simulations of the interstellar medium (ISM) within a galactic disk, which include radiative transfer, a non-equilibrium model of molecular hydrogen, and a realistic model for star formation and feedback, to…

Astrophysics of Galaxies · Physics 2024-05-07 Ava Polzin , Andrey V. Kravtsov , Vadim A. Semenov , Nickolay Y. Gnedin

By means of post-processed cosmological Hydrodynamics simulations we explore the ability of the fossil record method to recover the stellar mass, age gradients, and global/radial star formation and mass growth histories of galaxies observed…

We present a statistical framework to compare spectral-line data cubes of molecular clouds and use the framework to perform an analysis of various statistical tools developed from methods proposed in the literature. We test whether our…

Astrophysics of Galaxies · Physics 2017-07-19 Eric W. Koch , Caleb G. Ward , Stella Offner , Jason L. Loeppky , Erik W. Rosolowsky

We use three-dimensional numerical hydrodynamic simulations of the turbulent, multiphase atomic interstellar medium (ISM) to construct and analyze synthetic HI 21 cm emission and absorption lines. Our analysis provides detailed tests of 21…

Astrophysics of Galaxies · Physics 2015-06-19 Chang-Goo Kim , Eve C. Ostriker , Woong-Tae Kim

The X-ray Integral Field Unit (X-IFU) that will be on board the Athena telescope will provide an unprecedented view of the intracluster medium (ICM) kinematics through the observation of gas velocity, $v$, and velocity dispersion, $w$, via…

Cosmology and Nongalactic Astrophysics · Physics 2018-10-17 M. Roncarelli , M. Gaspari , S. Ettori , V. Biffi , F. Brighenti , E. Bulbul , N. Clerc , E. Cucchetti , E. Pointecouteau , E. Rasia

We present a convenient, all-in-one framework for the scientific analysis of fully reduced, (integral-field) spectroscopic data. The GIST pipeline (Galaxy IFU Spectroscopy Tool) is entirely written in Python3 and conducts all steps from the…

We introduce GalaxyGenius, a Python package designed to produce synthetic galaxy images tailored to different telescopes based on hydrodynamical simulations. Its implementation will support and advance research on galaxies in the era of…

Instrumentation and Methods for Astrophysics · Physics 2025-08-13 Xingchen Zhou , Hang Yang , Nan Li , Qi Xiong , Furen Deng , Xian-Min Meng , Renhao Ye , Shiyin Shen , Peng Wei , Qifan Cui , Zizhao He , Ayodeji Ibitoye , Chengliang Wei , Yuedong Fang

We present the Empirical Dust Attenuation (EDA) framework -- a flexible prescription for assigning realistic dust attenuation to simulated galaxies based on their physical properties. We use the EDA to forward model synthetic observations…

We create the first large-scale mock spectroscopic survey of gas absorption sightlines traversing the interstellar medium (ISM), circumgalactic medium (CGM), and intergalactic medium (IGM) surrounding galaxies of virtual Universes. That is,…