We present results of an optical and near-infrared (IR) 1.8 deg2 survey in the Pleiades open cluster to search for substellar objects. From optical I-band...

The method presented is applied to asteroidal approaches to catalogue stars and occultations, and derives the minimum separation at conjunction and the...

We have identified two late M dwarfs within 10 pc of the Sun, by cross-correlating the Luyten NLTT catalogue of stars with proper motions larger than 0.18...

Context. The shapes of only 12 trans-Neptunian objects have been directly measured, offering crucial insights into their internal structure. These properties...

This paper presents an astronomical software package which draws celestial charts. It was conceived taking into account the technical possibilities available...

We measure systemic proper motions for distant dwarf galaxies in the Local Group and investigate if these isolated galaxies have ever had an interaction with...

How very massive stars form is still an open question in astrophysics. VFTS682 is among the most massive stars known, with an inferred initial mass of ≳150 M_⊙...

Here we explore the efficiency and fidelity of a purely astrometric selection of quasars as point sources with zero proper motions in the Gaia data release 2...

We have used archival survey data, most importantly from the SuperCOSMOS Sky Surveys, to derive accurate proper motions and thus confirm the membership of two...