The gamma radiolysis of fullerene C-60 dispersed in H2O, H2O/NH3, H2O/methanol and H2O/NH3/methanol was studied at 250 and 500 kGy. It was found that C-60 originally insoluble in the above mentioned hosting matrix became soluble as a consequence of multiple hydroxylation and oxidation reaction produced by the free radicals generated by the

We have developed a new diagnostic tool for the study of gamma-ray emission lines from radioactive isotopes (such as 26Al and 60Fe) in conjunction with other multi-wavelength observables of Galactic clusters, associations, and alike objects. Our evolutionary synthesis models are based on the code of \cite{CMH94}, which has been updated to include

During Dec. 2-4, 2001, the comet C/2000 WM1 (LINEAR) was observed at ESO by using the 1.5m Danish Telescope equipped with DFOSC as focal plane. The comet was imaged in broad-band filters (R,I) and interferometric filters covering the CN, C2, C3 gas emissions as well as clear continuum regions. Additionally, long-slit spectra were also taken as part

We present early WHT ISIS optical spectroscopy of the afterglow of gamma-ray burst GRB 050730. The spectrum shows a DLA system with the highest measured hydrogen column to date: N(H I) = 22.1 ± 0.1 at the third-highest GRB redshift z = 3.968. Our analysis of the Swift XRT X-ray observations of the early afterglow show X-ray flares accompanied by

A complex kinematical structure is inferred from the analysis of high resolution spectra of the nuclear region of the galaxy NGC 6946. The spatial resolution of the observations allowed the authors to resolve a dynamically inhomogeneous area of approximately 10 arcseconds in diameter, very close to the centre of the galaxy. Within this region the

We present Gemini-North GMOS/IFU observations of a young star cluster and its environment near the centre of the dwarf irregular starburst galaxy NGC 1569. This forms part of a larger and ongoing study of the formation and collimation mechanisms of galactic winds, including three additional IFU pointings in NGC 1569 covering the base of the