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

A new spectral stellar library designed to be included in population synthesis models is presented. The library, which has been obtained at the INT 2.5 m telescope (La Palma) comprises ~ 1100 stars and covers the spectral range lambda lambda 3500-7500.

The Nuker law was designed to match the inner few (~3-10) arcseconds of predominantly nearby (

In this work we present some results of the multiwavelength study performed to a sample of 26 NLS1s discovered in the Second Byurakan Survey (SBS NLS1s). One of our main findings is that almost all SBS NLS1s may not have the FIR bump. Their SED suggest that they may also possess the BBB. In contrast with previous works, we have found weak soft X