Titlebook: Dusty Objects in the Universe; Proceedings of the F E. Bussoletti,A. A. Vittone Conference proceedings 1990 Kluwer Academic Publishers 1990

Traumatic-Grief

Rukshan Alexander,David Murray,Nik Thompsonensity at elevated temperatures. The 10.5 .m feature of coronene which does not correlate with the UIR decreases sharply as the temperature is increased. These results as well as some possible implications are discussed.

勉励

道学气

Arroyo

Chemical Alterations in Ion Irradiated Frozen Hydrocarbonsanic materials. Those results have been reviewed in recent literature with a view to their astrophysical relevance (e.g. Strazzulla and Johnson 1989, Andronico et al. 1987, Lanzerotti et al. 1987, Foti et al. 1984, Johnson et al. 1984).

Aura231

The Particles Around Mass-Losing Carbon Starsave dust to gas ratios by mass near 5 10.; most of the matter heavier than helium is apparently contained within solid grains. The relative amounts of large grains (>10. cm) and small particles in these outflows is not yet reliably known and may vary from star to star.

indignant

The Infrared Interstellar Emission Featuress review presents recent observational results on spectroscopy of the features, with an emphasis on the more complex picture of the features resulting from the higher spectral resolution and higher sensitivity currently available. Laboratory work on identification of the feature emitting material is

轮流

Defraud

Novel Ion Chemistry of Interstellar Polycyclic Aromatic Hydrocarbonse, the simplest polycyclic aromatic hydrocarbon molecule. Naphthalene is observed to attach to Si. and to alter its chemistry. The observed gas-phase reactions of the Si..naphthalene adduct are viewed as “surface reactions”. They provide a novel route for the synthesis of Si-bearing molecules. The r

ear-canal

Astrophysical Implications of the Infrared Spectrum of Coronene at Elevated Temperatureslected temperatures. Changes in the aborbance spectum at elevated temperatures include a 3—fold strengthening of coronene’s 3.29 .m band which assumes a profile very similar to the 3.29 .m UIR band. Coronene’s 8.8 .m feature which is also correlated with a UIR also shows substantial increases in int

季雨