Skip to main content

9 Result(s)

within English Remove this filter Astronomy, Observations and Techniques Remove this filter L. Colangeli Remove this filter Conference Paper Remove this filter

and

  1. No Access

    Chapter and Conference Paper

    Experimental Evidences for HAC and PAHs Soup in Space

    Since its discovery in the spectrum of NGC 7027, the family of weak IR bands, the so called unidentified IR bands (hereinafter UIR), has been found in emission in a wide variety of galactic and extragalactic s...

    A. Blanco, E. Bussoletti, L. Colangeli, S. Fonti… in Experiments on Cosmic Dust Analogues (1988)

  2. No Access

    Chapter and Conference Paper

    Amorphous Carbon and Silicon Carbide Grains Around Carbon Stars

    It is well known that a large amount of dust (~ 40%) is produced in the envelopes of late-type stars (Jura, 1985). Moreover, according to Knapp and Morris (1985) a very important contribution to this amount (a...

    A. Blanco, A. Borghesi, E. Bussoletti, L. Colangeli… in Experiments on Cosmic Dust Analogues (1988)

  3. No Access

    Chapter and Conference Paper

    Silicate Grains in Space: Laboratory Results

    Since their discovery in the spectra of some strong IR sources (Stein et al., 1969; Woolf and Ney, 1969; Forrest et al., 1979), the bands at around 10 µm and 20 µm have been respectively attributed to typical Si-...

    F. Leucci, L. Colangeli, E. Bussoletti… in Experiments on Cosmic Dust Analogues (1988)

  4. No Access

    Chapter and Conference Paper

    Solid Carbon in Space

    Interstellar grains represent an important constituent of matter in space. They are necessary to the cooling and heating mechanisms and play an important role in the gas phase composition of molecular clouds. ...

    E. Bussoletti, L. Colangeli, V. Orofino in Experiments on Cosmic Dust Analogues (1988)

  5. No Access

    Chapter and Conference Paper

    Optical Properties of Carbonaceous Materials

    We discuss the optical properties of carbonaceous materials from the VUV to the FIR. Updated laboratory data on amorphous carbon (HAC) and some PAH mixtures are analysed and compared with relevant literature. ...

    E. Bussoletti, L. Colangeli in Interstellar Dust (1989)

  6. No Access

    Chapter and Conference Paper

    Carbonaceous Solid Materials: From Laboratory to Space

    We present here an updated review of laboratory results obtained from different carbonaceous materials in grain and molecular forms. Temperature behaviour of bands falling between 3 µm and 13 µm is reported for s...

    A. Blanco, E. Bussoletti, L. Colangeli, S. Fonti, C. Fusco… in Dusty Objects in the Universe (1990)

  7. No Access

    Chapter and Conference Paper

    Molecular clouds in LMC: Evaluation of physical parameters by means of MM observations

    P. Merluzzi, P. Andreani, L. Colangeli… in The Physics and Chemistry of Interstellar … (1995)

  8. No Access

    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...

    V. Mennella, L. Colangeli, P. Palumbo… in The Role of Dust in the Formation of Stars (1996)

  9. No Access

    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...

    L. Colangeli, V. Mennella, J. R. Brucato… in Composition and Origin of Cometary Materia… (1999)