High Frequency Peaker (HFP) radio sources are an extreme class of active galactic nuclei whose nature has not been fully understood yet. They are compact...

We present a sample of sources with convex radio spectra peaking at frequencies above a few GHz, known as ``High Frequency Peakers" (HFPs). A ``bright" sample...

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Sub-Arcsec images in the JHK_s, H_2 and Br_γ of three areas (I(N), F and NGC 6334 IV (MM3)) of the giant molecular cloud NGC 6334 are presented. The preliminary...

We obtained deep broad-band JHKs and narrow-band H2 and Brγ images of the northern part of the giant molecular cloud NGC 6334 containing three distinct centers...

This paper addresses the issue of calibrating the Advanced Technology Solar Telescope for high-precision polarimetry, in particular of the optical train above...

The extension of the highly successful Doppler technique into the near-infrared (0.9-2.5 μm) is highly desirable as it would open the possibility for searches...

The K giant Arcturus (alpha Boo) was observed with the Birmingham double magneto-optical filter spectrometer using the GHRIL facility at the Nasmyth focus of...

We present quasar system catalogues based on SDSS DR7 QSO catalogue (Schneider et al., 2010AJ....139.2360S, Cat. VII/260) (14 data files).