203 citations · 1.2k across the 16 of their papers we have counts for
10 papers · 1 filter
The Spectral Energy Distribution of Self-gravitating Interstellar Clouds I. Spheres
Joerg Fischera, Michael A. Dopita
We derive the spectral energy distribution (SED) of dusty, isothermal, self gravitating, stable and spherical clouds externally heated by the ambient interstellar radiation field.…
Modelling the Pan-Spectral Energy Distribution of Starburst Galaxies: III. Emission Line Diagnostics of Ensembles of Evolving HII Regions
Michael A. Dopita, Joerg Fischera, Ralph S. Sutherland +6
We build, as far as theory will permit, self consistent model HII regions around central clusters of aging stars. These produce strong emission line diagnostics applicable to eithe…
Modelling the Pan-Spectral Energy Distribution of Starburst Galaxies: II. Control of the \HII Region Parameters
Michael A. Dopita, Joerg Fischera, Ralph S. Sutherland +6
We examine, from a theoretical viewpoint, how the physical parameters of HII regions are controlled in both normal galaxies and in starburst environments. These parameters are the…
Attenuation caused by a distant Isothermal Turbulent Screen
Joerg Fischera, Michael Dopita
We analyse in detail the attenuation caused by an isothermal turbulent distant foreground dust screen. The attenuation curve is well determined by two parameters, the absolute-to-r…
On the thermal behaviour of small iron grains
Joerg Fischera
The optical properties of small spherical iron grains are derived using a Kramers-Kronig-consistent model of the dielectric function including its dependence on temperature and siz…
Dust Attenuation caused by Isothermal Turbulent Media
Joerg Fischera
Our ability to correct the observational photometry of galaxies depends upon our knowledge of the attenuation of light produced by the dust contained in the interstellar medium. We…
Modelling the Pan-Spectral Energy Distribution of Starburst Galaxies: I. The role of ISM pressure & the Molecular Cloud Dissipation Timescale
Michael Dopita, Brent Groves, Joerg Fischera +6
In this paper, we combine the stellar spectral synthesis code STARBURST 99, the nebular modelling code MAPPINGS IIIq, a 1-D dynamical evolution model of \HII regions around massive…
Infrared emission towards SN 1987A 11 years after outburst: Measurements with ISOCAM
Joerg Fischera, Richard J. Tuffs, Heinrich J. Voelk
We present measurements of the mid-infrared (MIR) emission from SN 1987A, made using the Infrared Space Observatory (ISO) 11 years after outburst. They are the only late epoch dete…
Starburst Galaxies: Why the Calzetti Dust Extinction Law?
Joerg Fischera, Michael A. Dopita, Ralph S. Sutherland
The empirical reddening function for starburst galaxies generated by Calzetti and her co-workers has proven very successful, and is now used widely in the observational literature.…
On the FIR emission from intracluster dust
Cristina C. Popescu, Richard J. Tuffs, Joerg Fischera +1
We make predictions for the diffuse far-infrared (FIR) emission from dust in the intracluster medium (ICM) of the Virgo cluster using detailed information on potential dust sources…