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Micro-physical processes on interstellar dust surfaces are tightly connected to dust properties (i.e. dust composition, size and shape) and play a key role in numerous phenomena in the interstellar medium (ISM). The large disparity in…

Astrophysics of Galaxies · Physics 2020-07-29 T. Schirmer , A. Abergel , L. Verstraete , N. Ysard , M. Juvela , A. P. Jones , E. Habart

We introduce a new, discretized grain size evolution model, incorporated into the GIZMO code and coupled with FIRE-3 stellar feedback and ISM physics, to investigate variations in dust abundance, chemical composition, and grain sizes…

Astrophysics of Galaxies · Physics 2026-03-10 Caleb R. Choban , Samir Salim , Dušan Kereš , Julia Roman-Duval , Karin M. Sandstrom

We perform a series of cosmological simulations using Enzo, an Eulerian adaptive-mesh refinement, N-body + hydrodynamical code, applied to study the warm/hot intergalactic medium. The WHIM may be an important component of the baryons…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Britton D. Smith , Eric J. Hallman , J. Michael Shull , Brian W. O'Shea

We present a pipeline to estimate baryonic properties of a galaxy inside a dark matter (DM) halo in DM-only simulations using a machine trained on high-resolution hydrodynamic simulations. As an example, we use the IllustrisTNG hydrodynamic…

Astrophysics of Galaxies · Physics 2019-10-03 Yongseok Jo , Ji-hoon Kim

This paper is a review of some of the recent modeling efforts to improve our understanding of structure formation and evolution of planetary nebulae including their interaction with the interstellar medium. New propositions have been made…

Solar and Stellar Astrophysics · Physics 2015-05-30 Wolfgang Steffen

Galactic interstellar dust has a profound impact not only on our observations of objects throughout the Universe, but also on the morphology, star formation, and chemical evolution of the Galaxy. The advent of massive imaging and…

The galaxy size-stellar mass and central surface density-stellar mass relationships are observational constraints on galaxy formation models. However, inferring the physical size of a galaxy from observed stellar emission is non-trivial due…

Molecular oxygen has been the subject of many observational searches as chemical models predicted it to be a reservoir of oxygen. Although it has been detected in two regions of the interstellar medium, its rarity is a challenge for…

Astrophysics of Galaxies · Physics 2019-06-04 V. Wakelam , M. Ruaud , P. Gratier , I. A. Bonnell

We present models of photometric evolution of galaxies in which the effects of a dusty interstellar medium have been included with particular care. A chemical evolution code follows the star formation rate, the gas fraction and the…

Astrophysics · Physics 2007-05-23 Laura Silva , Gian Luigi Granato , Alessandro Bressan , Luigi Danese

We present a method to simultaneously model the dust far-infrared spectral energy distribution (SED) and the total infrared $-$ carbon monoxide (CO) integrated intensity $(S_{\rm IR}-I_{\rm CO})$ relationship. The modelling employs a…

I present an overview of the hierarchy of structures existing in the interstellar medium (ISM) and the possible mechanisms that cause the fragmentation of one level into the next, with the formation of stars as its last step. Within this…

Astrophysics · Physics 2009-11-10 Enrique Vazquez-Semadeni

A highly favoured mechanism of planetesimal formation is collisional growth. Single dust grains, which follow gas flows in the protoplanetary disc, hit each other, stick due to van der Waals forces and form fluffy aggregates up to…

Earth and Planetary Astrophysics · Physics 2015-05-14 Ralf J. Geretshauser , Roland Speith , Carsten Güttler , Maya Krause , Jürgen Blum

We apply Support Vector Machines -- a machine learning algorithm -- to the task of classifying structures in the Interstellar Medium. As a case study, we present a position-position velocity data cube of 12 CO J=3--2 emission towards…

Astrophysics of Galaxies · Physics 2015-05-28 Christopher N. Beaumont , Jonathan P. Williams , Alyssa A. Goodman

We implement a state-of-the-art treatment of the processes affecting the production and Interstellar Medium (ISM) evolution of carbonaceous and silicate dust grains within SPH simulations. We trace the dust grain size distribution by means…

Astrophysics of Galaxies · Physics 2018-06-13 Eda Gjergo , Gian Luigi Granato , Giuseppe Murante , Cinthia Ragone-Figueroa , Luca Tornatore , Stefano Borgani

Chemical modeling and synthetic observations are powerful methods to interpret observations, both requiring a knowledge of the physical conditions. In this paper, we present the Analytical Protostellar Environment (APE) code, which aims at…

MHD Turbulence is a critical component of the current paradigms of star formation, particle transport, magnetic reconnection and evolution of the ISM. Progress on this difficult subject is made via numerical simulations and observational…

Astrophysics of Galaxies · Physics 2011-05-06 Blakesley Burkhart , Alex Lazarian

Numerical models of the dynamical interstellar medium show that interactions between structures such as supernova remnants and superbubbles are more important than the structures themselves in determining the behavior of the ISM. I review…

Astrophysics · Physics 2007-05-23 Mordecai-Mark Mac Low

The rapid advancement of large-scale cosmological simulations has opened new avenues for cosmological and astrophysical research. However, the increasing diversity among cosmological simulation models presents a challenge to the robustness.…

Cosmology and Nongalactic Astrophysics · Physics 2025-02-20 Yongseok Jo , Shy Genel , Anirvan Sengupta , Benjamin Wandelt , Rachel Somerville , Francisco Villaescusa-Navarro

We present new ALMA dust continuum observations of 101 $\log(\mathrm{M}_* / \mathrm{M}_\odot)$ > 9.5 galaxies in the COSMOS field to study the effect of environment on the interstellar medium at z ~ 0.7. At this redshift, our targets span a…

Astrophysics of Galaxies · Physics 2019-03-26 S. K. Betti , Alexandra Pope , N. Scoville , Min S. Yun , H. Aussel , J. Kartaltepe , K. Sheth

Aims. We study the effect of large scale dynamics on the molecular composition of the dense interstellar medium during the transition between diffuse to dense clouds. Methods. We followed the formation of dense clouds (on sub-parsec scales)…

Astrophysics of Galaxies · Physics 2018-04-11 M. Ruaud , V. Wakelam , P. Gratier , I. A. Bonnell