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Related papers: Time-Dependent Photoionization in a Dusty Medium I…

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As a tool to interpret nearby and high redshift galaxy data from optical to K-band we present our chemically consistent spectrophotometric evolutionary synthesis models. These models take into account the increasing initial metallicity of…

Astrophysics · Physics 2009-10-31 C. S. Möller , U. Fritze-v. Alvensleben , K. J. Fricke , D. Calzetti

We discuss how the removal of interstellar dust by radiation pressure of stars influences the chemical evolution of galaxies by using a new one-zone chemical evolution models with dust wind. The removal efficiency of an element (e.g., Fe,…

Astrophysics of Galaxies · Physics 2015-06-22 Kenji Bekki , Takuji Tsujimoto

Using a code that employs a self-consistent method for computing the effects of photoionization on circumstellar gas dynamics, we model the formation of wind-driven nebulae around massive Wolf-Rayet (W-R) stars. Our algorithm incorporates a…

High Energy Astrophysical Phenomena · Physics 2015-08-21 Vikram V. Dwarkadas , Duane Rosenberg

We develop a model of dust evolution in a multiphase, inhomogeneous ISM including dust growth and destruction processes. The physical conditions for grain evolution are taken from hydrodynamical simulations of giant molecular clouds in a…

Astrophysics of Galaxies · Physics 2016-11-09 Svitlana Zhukovska , Clare Dobbs , Edward B. Jenkins , Ralf Klessen

Interstellar dust plays a central role in shaping the detailed structure of the interstellar medium, thus strongly influencing star formation and galaxy evolution. Dust extinction provides one of the main pillars of our understanding of…

AIMS: I present the Monte Carlo radiative transfer code TRADING (Transfer of RAdiation through Dust In Galaxies). The code computes self-consistently the extinction of radiation in a dusty medium (including absorption and scattering) and…

Astrophysics · Physics 2009-11-13 Simone Bianchi

The assumption of spherical symmetry is not justified for the vast majority of PNe. The interpretation of spatially-resolved observations cannot rely solely on the application of 1D codes, which may yield incorrect abundances determinations…

Astrophysics · Physics 2009-11-11 B. Ercolano , M. J. Barlow , P. J. Storey

We extend our time-dependent hydrogen ionization simulations of diffuse ionized gas to include metals important for collisional cooling and diagnostic emission lines. The combination of heating from supernovae and time-dependent collisional…

Astrophysics of Galaxies · Physics 2024-11-12 Lewis McCallum , Kenneth Wood , Robert Benjamin , Dhanesh Krishnarao , Bert Vandenbroucke

With the high-resolution spectroscopy now available in the optical and satellite UV, it is possible to determine the neutral/ionized column density ratios for several different elements in a single cloud. Assuming ionization equilibrium for…

Astrophysics · Physics 2009-11-06 Joseph C. Weingartner , B. T. Draine

We present the first 3D Monte Carlo (MC) photoionisation code to include a fully self-consistent treatment of dust radiative transfer (RT) within a photoionised region. This is the latest development (Version 2.0) of the gas-only…

Astrophysics · Physics 2009-11-13 B. Ercolano , M. J. Barlow , P. J. Storey

We provide simple polynomial fits to the X-ray photoelectric cross-sections (0.03 < E < 10keV) for mixtures of gas and dust found in protoplanetary disks. Using the solar elemental abundances of Asplund et al. (2009) we treat the gas and…

Solar and Stellar Astrophysics · Physics 2015-05-28 Thomas Bethell , Edwin Bergin

Ionization-recombination balance in dense interstellar and circumstellar environments is a key factor for a variety of important physical processes, such as chemical reactions, dust charging and coagulation, coupling of the gas with…

Solar and Stellar Astrophysics · Physics 2016-12-14 A. V. Ivlev , V. V. Akimkin , P. Caselli

For many decades, dust has been recognised as an important ingredient in galaxy formation and evolution. This paper presents a novel self-consistent implementation of dust formation by stars, destruction by supernova shocks and hot gas, and…

Astrophysics of Galaxies · Physics 2025-12-19 Omima Osman , Gabriella De Lucia , Fabio Fontanot , Lizhi Xie , Michaela Hirschmann

Properties of candidate stars, forming out of molecular clouds, depend on the ambient conditions of the parent cloud. We present a series of 2D and 3D simulations of fragmentation of molecular clouds in starburst regions as well as clouds…

Solar and Stellar Astrophysics · Physics 2014-11-20 S. Hocuk , M. Spaans

The wavelength dependences of interstellar extinction and polarization, supplemented by observed elemental abundances and the spectrum of infrared emission from dust heated by starlight, strongly constrain dust models. One dust model that…

Astrophysics of Galaxies · Physics 2009-03-11 B. T. Draine

We analyze the stellar and nebular energy distributions of starbursts using our evolutionary synthesis model PEGASE coupled to the photoionization code CLOUDY. The originality of this study is to relate the evolution and the metallicity of…

Astrophysics · Physics 2009-11-06 E. Moy , B. Rocca-Volmerange , M. Fioc

Observations have shown that continuous radio emission and also sporadic H-alpha and X-ray emission are prominent in singular, low-mass objects later than spectral class M. These activity signatures are interpreted as being caused by…

Solar and Stellar Astrophysics · Physics 2015-05-28 Ch. Helling , M. Jardine , F. Mokler

This work is the continuation of a series attempting to characterize the local warm ionized medium through both static and time dependent simulations. We build upon our three dimensional, observationally-derived simulation of the local…

Astrophysics of Galaxies · Physics 2025-06-24 Lewis McCallum , Kenneth Wood , Robert Benjamin , Dhanesh Krishnarao , Anna F. McLeod

In this paper, we extend the study initiated in PaperI by modelling grain ensemble evolution in a dynamical model of an expanding HII region and checking the effects of momentum transfer from dust to gas. The radiation pressure on the dust,…

Astrophysics of Galaxies · Physics 2017-09-08 V. V. Akimkin , M. S. Kirsanova , Ya. N. Pavlyuchenkov , D. S. Wiebe

We present evolutionary calculations for the size and aromatization degree distributions of interstellar dust grains, driven by their destruction by radiation, collisions with gas particles, and shattering due to grain-grain collisions.…

Solar and Stellar Astrophysics · Physics 2016-12-07 M. S. Murga , S. A. Khoperskov , D. S. Wiebe