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Galaxy And Mass Assembly (GAMA)
Simon P. Driver, the GAMA team
The GAMA survey aims to deliver 250,000 optical spectra (3--7Ang resolution) over 250 sq. degrees to spectroscopic limits of r_{AB} <19.8 and K_{AB}<17.0 mag. Complementary imaging…
The energy output of the Universe from 0.1 micron to 1000 micron
Simon P. Driver, Cristina C. Popescu, Richard J. Tuffs +3
The dominant source of electromagnetic energy in the Universe today (over ultraviolet, optical and near-infrared wavelengths) is starlight. However, quantifying the amount of starl…
Modelling the SEDs of spiral galaxies
Cristina C. Popescu, Richard J. Tuffs
Modelling the UV/optical - infrared/submm SEDs of spiral galaxies observed with Herschel will be an essential tool to quantitatively interpret these observations in terms of the pr…
The Millennium Galaxy Catalogue: the B-band attenuation of bulge and disc light and the implied cosmic dust and stellar mass densities
Simon P. Driver, Cristina C. Popescu, Richard J. Tuffs +4
Based on our sample of 10095 galaxies with bulge-disc decompositions we derive the empirical B-band internal attenuation--inclination relation for galaxy discs and their associated…
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 spectral energy distribution of galaxies. IV Correcting apparent disk scalelengths and central surface brightnesses for the effect of dust at optical and near-infrared wavelengths
C. Möllenhoff, C. C. Popescu, R. J. Tuffs
We present corrections for the change in the apparent scalelengths, central surface brightnesses and axis ratios due to the presence of dust in pure disk galaxies, as a function of…
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…
Powerful High Velocity-Dispersion Molecular Hydrogen Associated with an Intergalactic Shock Wave in Stephan's Quintet
P. N. Appleton, K. C. Xu, W. Reach +7
We present the discovery of strong mid-infrared emission lines of molecular hydrogen of apparently high velocity dispersion (~870 km/s) originating from a group-wide shock wave in…
Normal Nearby Galaxies
Marc Sauvage, Richard J. Tuffs, Cristina C. Popescu
Following on from IRAS, ISO has provided a huge advancement in our knowledge of the phenomenology of the infrared (IR) emission of normal galaxies and the underlying physical proce…
Discovery of an extended ultraviolet disk in the nearby galaxy NGC4625
A. Gil de Paz, B. F. Madore, S. Boissier +8
Recent far-UV (FUV) and near-UV (NUV) observations of the nearby galaxy NGC4625 made by the Galaxy Evolution Explorer (GALEX) show the presence of an extended UV disk reaching 4 ti…
Modelling the ultraviolet/submillimeter spectral energy distributions of normal galaxies
Cristina C. Popescu, Richard J. Tuffs
We give an overview of the factors shaping the ultraviolet (UV)/optical - far-infrared (FIR)/submillimeter (submm) spectral energy distributions (SEDs) of normal (non-starburst) ga…
Normal Gas-Rich Galaxies in the Far-Infrared: The Legacy of ISOPHOT
Richard J. Tuffs, Cristina C. Popescu
Following on from IRAS, the ISOPHOT instrument on board the Infrared Space Observatory (ISO) has provided a huge advancement in our knowledge of the phenomenology of the far-infrar…
A comparative study of the spatial distribution of ultraviolet and far-infrared fluxes from M 101
C. C. Popescu, R. J. Tuffs, B. F. Madore +23
The total ultraviolet (UV) flux (from 1412 to 2718 AA) of M 101 is compared on a pixel-to-pixel basis with the total far-infrared (FIR) flux (from 60 to 170 micron), using the maps…
Far-infrared and sub-mm observations of the Crab nebula
D. A. Green, R. J. Tuffs, C. C. Popescu
We present FIR and sub-mm images of the Crab nebula, taken with ISOPHOT on board ISO and with the SCUBA on the JCMT. The ISOPHOT observations were made at 60, 100, 170 micron, with…
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…
Modelling the spectral energy distribution of galaxies. III. Attenuation of stellar light in spiral galaxies
Richard. J. Tuffs, Cristina C. Popescu, Heinrich J. Voelk +2
We present new calculations of the attenuation of stellar light from spiral galaxies using geometries for stars and dust which can reproduce the entire spectral energy distribution…
Far Infrared mapping of NGC 891
Cristina C. Popescu, Richard. J. Tuffs, Nikolaos D. Kylafis +1
We present deep maps of dust emission from the edge-on spiral galaxy NGC 891, obtained with the ISOPHOT instrument on board the Infrared Space Observatory in broad band filters wit…
The first detection of Far-Infrared emission associated with an extended HI disk. The case of NGC 891
Cristina C. Popescu, Richard. J. Tuffs
Spiral galaxies in the Local Universe are commonly observed to be embedded in extended disks of neutral hydrogen - the so called ``extended HI disks''. Based on observations made u…
The far-IR/radio correlation in the ISO era
D. Pierini, C. C. Popescu, R. J. Tuffs +1
We present the correlation between the far-infrared (FIR) and radio emissions from a composite sample of 72 nearby normal galaxies observed with the ISOPHOT instrument on board the…
Far-infrared Emission from Dust in Normal Galaxies
Richard J. Tuffs, Cristina C. Popescu
We review the morphological and spectral energy distribution characteristics of the dust continuum emission (emitted in the 40-200 micron spectral range) from normal galaxies, as r…
The percentage of stellar light re-radiated by dust in late-type Virgo Cluster galaxies
C. C. Popescu, R. J. Tuffs
We show that the mean percentage of stellar light re-radiated by dust is ~30 percent for the Virgo Cluster late-spirals measured with ISOPHOT by Tuffs et al. (2002). A strong depen…
Modelling the spectral energy distribution of galaxies from the ultraviolet to submillimeter
Cristina C. Popescu, Richard J. Tuffs
We present results from a new modelling technique which can account for the observed optical/NIR - FIR/submm spectral energy distributions (SEDs) of normal star-forming galaxies in…
Far-Infrared photometry of a statistical sampleof late-type Virgo Cluster galaxies
Richard J. Tuffs, Cristina C. Popescu, Daniele Pierini +6
We present deep diffraction-limited far-infrared (FIR) strip maps of a sample of 63 galaxies later than S0 and brighter than B_T 16.8, selected from the Virgo Cluster Catalogue of…
Cold dust in late-type Virgo Cluster galaxies
Cristina C. Popescu, Richard J. Tuffs, Heinrich J. Voelk +2
We have statistically analyzed the spatially integrated far-infrared (FIR) emissions of the complete volume- and luminosity-limited sample of late-type (later than S0) Virgo cluste…