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The mid-infrared colour-magnitude relation of early-type galaxies in the Coma cluster as measured by Spitzer-IRS
M. S. Clemens, A. Bressan, P. Panuzzo +4
We use 16 micron, Spitzer-IRS, blue peakup photometry of 50 early-type galaxies in the Coma cluster to define the mid-infrared colour-magnitude relation. We compare with recent sim…
Extremely massive young clusters in NGC1365
E. Galliano, D. Alloin, E. Pantin +5
In a previous work, three bright MIR/radio sources were discovered in the nuclear region of NGC1365. We here confirm that these sources are young and massive ``embedded'' clusters,…
Modeling the spectral energy distribution of ULIRGs I: the radio spectra
M. S. Clemens, O. Vega, A. Bressan +3
As a constraint for new starburst/AGN models of IRAS bright galaxies we determine the radio spectra of 31 luminous and ultraluminous IRAS galaxies (LIRGs/ULIRGs). We construct the…
Early Type Galaxies in the Mid Infrared: a new flavor to their stellar populations
A. Bressan, P. Panuzzo, O. Vega +6
The mid infrared emission of early type galaxies traces the presence of intermediate age stellar populations as well as even tiny amounts of ongoing star formation. Here we discuss…
Early Type Galaxies in the Mid Infrared
A. Bressan, P. Panuzzo, L. Silva +6
We are performing a systematic study of the properties of early-type galaxies in the mid infrared spectral region with the Spitzer Space Telescope. We present here high S/N Spitzer…
UV dust attenuation in spiral galaxies: the role of age-dependent extinction and of the IMF
P. Panuzzo, G. L. Granato, V. Buat +4
We analyse the attenuation properties of a sample of UV selected galaxies, with the use of the spectrophotometric model Grasil. In particular, we focus on the relation between dust…
The Star Formation History of the Virgo early-type galaxy NGC4435: the Spitzer Mid Infrared view
P. Panuzzo, O. Vega, A. Bressan +7
We present a population synthesis study of NGC4435, an early-type Virgo galaxy interacting with NGC4438. We combine new spectroscopic observations obtained with the Spitzer Space T…
Effects of dust scattering albedo and 2175 A bump on ultraviolet colours of normal disc galaxies
Akio K. Inoue, Veronique Buat, Denis Burgarella +3
We discuss dust properties in the interstellar medium (ISM) of nearby normal galaxies, by comparing observations in the ultraviolet (UV) with simulations by a radiative transfer mo…
The SPITZER IRS view of stellar populations in Virgo early type galaxies
A. Bressan, P. Panuzzo, L. Buson +7
We have obtained high S/N Spitzer IRS spectra of 17 Virgo early-type galaxies that lie on the colour-magnitude relation of passively evolving galaxies in the cluster. To flux calib…
SPITZER IRS spectra of Virgo early type galaxies: detection of stellar silicate emission
A. Bressan, P. Panuzzo, L. Buson +7
We present high signal to noise ratio Spitzer Infrared Spectrograph observations of 17 Virgo early-type galaxies. The galaxies were selected from those that define the colour-magni…
The evolution of actively star forming galaxies in the mid infrared
O. Vega, L. Silva, P. Panuzzo +3
In this paper we analyze the evolution of actively star forming galaxies in the mid-infrared (MIR). This spectral region, characterized by continuum emission by hot dust and by the…
Panchromatic models of galaxies: GRASIL
P. Panuzzo, L. Silva, G. L. Granato +2
We present here a model for simulating the panchromatic spectral energy distribution of galaxies, which aims to be a complete tool to study the complex multi-wavelength picture of…
Dust and Nebular Emission. I. Models for Normal Galaxies
P. Panuzzo, A. Bressan, G. L. Granato +2
We present a model for nebular emission in star forming galaxies, which takes into account the effects of dust reprocessing. The nebular emissions have been computed with CLOUDY an…
Dust and Nebular Emission in Star Forming Galaxies
Pasquale Panuzzo, Alessandro Bressan, Gian Luigi Granato +2
Star forming galaxies exhibit a variety of physical conditions, from quiescent normal spirals to the most powerful dusty starbursts. In order to study these complex systems, we nee…
Theoretical predictions on the clustering of SCUBA galaxies and implications for small-scale fluctuations at sub-mm wavelengths
M. Magliocchetti, L. Moscardini, P. Panuzzo +3
This paper investigates the clustering properties of SCUBA-selected galaxies in the framework of a unifying scheme relating the formation of QSOs and spheroids (Granato et al. 2000…
Joint Formation of QSOs and Spheroids: QSOs as clocks of star formation in Spheroids
G. L. Granato, L. Silva, P. Monaco +4
Direct and indirect observational evidence leads to the conclusion that high redshift QSOs did shine in the core of early type proto-galaxies during their main episode of star form…