41 Result(s)
within
L. Colangeli
Physics
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Article
Open AccessSIMBIO-SYS: Scientific Cameras and Spectrometer for the BepiColombo Mission
The SIMBIO-SYS (Spectrometer and Imaging for MPO BepiColombo Integrated Observatory SYStem) is a complex instrument suite part of the scientific payload of the Mercury Planetary Orbiter for the BepiColombo mis...
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Article
Open AccessTriple F—a comet nucleus sample return mission
The Triple F (Fresh From the Fridge) mission, a Comet Nucleus Sample Return, has been proposed to ESA’s Cosmic Vision program. A sample return from a comet enables us to reach the ultimate goal of cometary resear...
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Article
Cosima – High Resolution Time-of-Flight Secondary Ion Mass Spectrometer for the Analysis of Cometary Dust Particles onboard Rosetta
The ESA mission Rosetta, launched on March 2nd, 2004, carries an instrument suite to the comet 67P/Churyumov-Gerasimenko. The COmetary Secondary Ion Mass Anaylzer – COSIMA – is one of three cometary dust analy...
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Article
Virtis: An Imaging Spectrometer for the Rosetta Mission
The VIRTIS (Visual IR Thermal Imaging Spectrometer) experiment has been one of the most successful experiments built in Europe for Planetary Exploration. VIRTIS, developed in cooperation among Italy, France a...
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Article
The Grain Impact Analyser and Dust Accumulator (GIADA) Experiment for the Rosetta Mission: Design, Performances and First Results
The Grain Impact Analyser and Dust Accumulator (GIADA) onboard the ROSETTA mission to comet 67P/Churyumov–Gerasimenko is devoted to study the cometary dust environment. Thanks to the rendezvous configuration o...
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Chapter
The Giada Experiment for the Rosetta Mission
The Grain Impact Analyser and Dust Accumulator (GIADA) instrument, on board the ESA Rosetta mission, shall analyse the physical and dynamical properties of grains ejected by the target comet and monitor the co...
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Article
The role of laboratory experiments in the characterisation of silicon–based cosmic material
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Article
Characterization of Cosmic Materials in the Laboratory
One of the main objectives of modern astrophysics is the characterisation of properties and evolution of materials present in space. Production, processing and analysis of cosmic dust analogues in the laborato...
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Chapter
Matrix Isolation of Amorphous Carbon Grains in Boron-Oxide Glass
Small carbon particles less than 20 nm in diameter are widely regarded as an essential element in models to fit the interstellar extinction curve, particularly in regard to the 217.5 nm “bump”. The techniques ...
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Chapter
IR Reflectance Spectroscopy of Martian Analogues
The purpose of this paper is to show some preliminary results about IR reflectance spectroscopic properties of Martian analogues. We focus on IR measurements because most of Mars radiance is contained in this ...
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Chapter
Temperature Dependence of the Fir Absorption Coefficient for Carbon and Silicate Grains
In this paper we present some preliminary results concerning the measure of the mass absorption coefficient of carbonaceous and silicates grains at various temperatures in the far-infrared spectral region. We ...
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Chapter and Conference Paper
Characterization of Cosmic Materials in the Laboratory
One of the main objectives of modern astrophysics is the characterisation of properties and evolution of materials present in space. Production, processing and analysis of cosmic dust analogues in the laborato...
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Chapter
Morphology, Composition and Mir-Fir Spectroscopy of Silicates of Astrophysical Interest
An important step in the characterisation of cosmic analogues is represented by the study and comparison of morphological, chemical and spectroscopical properties of “crystalline” and “amorphous” materials. In...
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Chapter
Cosmic Dust and Laboratory Simulation: Wishes, Results and Open Problems
Cosmic dust plays an active role in several processes occurring in the interstellar medium, in star formation regions and around evolved stars. Thus, the identification of its properties is one of the major go...
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Chapter and Conference Paper
UV Irradiation of Small Carbon Grains
We present preliminary results of an experiment aimed at simulating the UV processing of hydrogenated amorphous carbon grains occurring in the interstellar medium. UV exposure of these grains induces significa...
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Chapter and Conference Paper
Molecular clouds in LMC: Evaluation of physical parameters by means of MM observations
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Article
Comet P/grigg-Skjellerup: Ground-based observations after the encounter with the Giotto spacecraft
After the encounter with the Giotto spacecraft, the comet P/Grigg-Skjellerup was observed with the 2.2 m ESO telescope. Imaging in theV andR bands and infrared photometry with theJ andH filters were performed. Fr...
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Article
Planetary Fourier spectrometer: An interferometer for atmospheric studies on board Mars 94 mission
PFS is a two-channel Fourier spectrometer operating in the infra-red wavelengths between 1.25 and 45 μm. The instrument will be used mainly in the study of the Martian atmosphere. The principal goals are the m...
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Article
Dehydrogenation study of cosmic-dust analogue grains
New infrared and optical-absorption measurements performed on hydrogenated amorphous-carbon grains are presented. In particular, the spectral modifications produced by dehydrogenation of the samples are analys...
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Article
Interstellar-dust properties as deduced from FIR and millimetric observations
We have considered some millimetric observations of our Galaxy and of the Large Magellanic Cloud (LMC) taken at the Italian Base in Antarctica. Using other submm data and fitting all the observations with a mo...
