We present clear evidence for the motion of the companion star in the low-mass X-ray binary (LMXB) X1822-371. We detect N III λ4640 emission moving in antiphase with the radial velocity curve of the neutron star and produced on the X-ray-heated hemisphere of the donor star. From the motion of this feature we derive a lower limit to the radial

If the connection between the fundamental theory and neutrino mass matrices M_ u is sufficiently complicated all traces of underlying symmetries might be erased and an 'anarchical' M_ u, with random entries, can arise. It has been claimed that such random matrices generically prefer large mixing making unnecessary to invoke flavour symmetries to

This paper presents the results of a high-resolution imaging survey, using both ground-based and Hubble Space Telescope images, of a complete sample of nearby barred S0-Sa galaxies in the field, with a particular emphasis on identifying and measuring central structures within the bars: secondary bars, inner disks, nuclear rings and spirals, and off

We present the preliminary results of a programme aimed at defining a low-resolution near-infrared spectral classification scheme for faint M, L, and T-dwarfs. The method is based on the global shape of R˜100 complete near-infrared spectra from 0.8 to 2.4μm as obtained through a high-throughput prism-based optical element, the Amici device, mounted

We present preliminary results from a deep near-infrared survey of a ˜ 1 square degree area in the young open cluster Alpha Persei using the wide-field Omega-Prime camera on the Calar Alto 3.5m telescope, yielding a list of new low-mass cluster members, including brown dwarf candidates.

We report the discovery of a strong correlation between the shape of a bulge's light-profile and the mass of its central supermassive black hole (Mbh). We find that log(Mbh/Msun) = 2.91(+/-0.38)log(n) + 6.37(+/-0.21), where n is the Sérsic r1/n shape index. This correlation is shown to be at least as strong as the relationship between the logarithm