We present inferences of the internal solar rotation rate and its evolution during solar cycle 23. A full solar cycle of MDI observations have been analyzed...

We have obtained medium resolution spectra of the neutron star X-ray transient Aql X-1 during quiescence. We determine the spectral type of the companion star...

The highlights of the round table discussion held to discuss the most important pending problems in cometary astrophysics are reported. A number of experts...

We present new observational results on the RR Lyrae K-band Period-Luminosity relation (PLK). Data on the Galactic globular clusters NGC 3201 and NGC 4590 (M68)...

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The WMAP results on the scalar spectral index n and its running with scale, though preliminary, open a very interesting window to physics at very high energies...

The aim of the SAURON collaboration, and the reason for building the instrument, is to study a representative sample of nearby ellipticals, lenticulars and...

Nuclear rings located within the central 1-2 kiloparsecs of barred spiral galaxies are often found to contain a large fraction of the total star formation...

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