DENIS is a project to survey the all-southern sky in three wavelength bands (Gunn-i 0.82 μm; J, 1.25 μm; and K_s, 2.15 μm) with limiting magnitudes 18.5, 16.5...

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We report in this work on a project aimed at determining Lyα luminosity functions from z=3 to z=6. The project is based on the use of very deep photometry from...

WEAVE is the next-generation optical spectroscopy facility for the William Herschel Telescope and aims at spectroscopic follow-up of ground-based (LOFAR) and...

In principle, dark galaxies in the dwarf-galaxy mass range may be detectable through additional, small-scale image splitting of quasars that are already known...

Over the past two decades, enormous advances in the detection of exoplanets have taken place. Currently, we have discovered hundreds of Earth-sized planets...

We are studying a sample of spiral galaxies which host nuclear starbursts. Our aim is first to detect supergalactic winds (SGWs) and second to establish the...

The importance of forbidden line radiation is considered, taking into account lines in the visible and the infrared range. The result of a theoretical study...

The ISO ground-based preparatory programme working group (ISO-GBPPwg) was set the goal in 1990 to characterise accurately in the infrared some 400 stars...