Small planets with a radius between 1-4 Earth radii are extremely common in the Milky Way but their planetary formation and evolution are not revealed...

In this talk, I present the discovery and characterization of two transiting planets around the bright M1 V star TOI-776 (J=8.5 mag), detected during Sector 10...

Modern astronomic telescopes take advantage of multi-conjugate adaptive optics, in which wavefront sensors play a key role. A single sensor capable of measuring...

We study the evolution of galaxy structure and of the major merger fraction since z ˜ 1 to present in GOODS-S field for MB ≤ -20 and M* ≥ 1010 Msun selected...

An overview over analysis or modelling tools related to the radial velocity and transit methods for exoplanet detection and characterization is given, with over...

Subsolar metallicity L subdwarfs was discovered over a decade ago, but remain poor understood due to lack of known objects. We started to search for L subdwarfs...

The Small Magellanic Cloud is a crucial galaxy to understand many aspects of the formation and evolution of galaxies. We propose to collect deep photometry in...

Gaia, an ESA cornerstone mission, will obtain of the order of 100 high-precision photometric observations and lower precision radial velocity measurements over...

Quantitative seeing measurements have been provided at the Canarian Observatories since 1990 by differential image motion monitors (DIMMs). Image quality needs...