We have computed the Band Area Ratio (BAR) and Band I Center parameters, following the method by Cloutis et al. (1986) and Gaffey et al. (1993) for all the existent visible and near-infrared spectra of near-Earth asteroids (NEAs), main belt asteroids (MBs) and meteorites (Duffard et al.2005). For the NEAs we have grouped observations from NEOSS (de

We observed the Ultraluminous X-ray Source (ULX) IC 342 X-1 simultaneously in X-ray and radio with Chandra and the JVLA to investigate previously reported unresolved radio emission coincident with the ULX. The Chandra data reveal a spectrum that is much softer than observed previously and is well modelled by a thermal accretion disc spectrum. No

Using the observations performed by VISTA-VHS survey we obtained the near-infrared colors of 35 000 minor planets. This survey uses Y, J, H, and Ks filters to image the entire sky of the southern hemisphere. A dedicated pipeline was developed to retrieve and process the measurements corresponding to Solar System objects, which are stored in three

The atmospheric parameters were derived using a strictly spectroscopic method based on the LTE analysis of equivalent widths of FeI and FeII lines. With existing photometric data and the Hipparcos parallaxes, we estimated stellar masses and ages via evolutionary tracks fitting. The stellar radii were calculated from either estimated masses and the

We present the classification of 26 optical counterparts to X-ray sources discovered in the Galactic Bulge Survey. We use (time-resolved) photometric and spectroscopic observations to classify the X-ray sources based on their multiwavelength properties. We find a variety of source classes, spanning different phases of stellar/binary evolution. We

We present the results of the first spectroscopic follow-up of 132 optically blue ultraviolet (UV)-excess sources selected from the UV-Excess Survey of the Northern Galactic Plane (UVEX). The UV-excess spectra are classified into different populations and grids of model spectra are fitted to determine spectral types, temperatures, surface gravities