Astronomy, being one of the oldest observational sciences, has collected a lot of data over
the ages. In recent times, it is experiencing a huge data surge due to advancements in …

Astronomers are increasingly compelled to chart the universe with ever greater precision.
Projects like the Sloan Digital Sky Survey (SDSS), Pan-STARRS, and the Large Synoptic …

The ensemble of chemical element abundance measurements for stars, along with precision
distances and orbit properties, provides high-dimensional data to study the evolution of the …

Context. Young circumstellar disks are the birthplaces of planets. Their study is of prime
interest to understand the physical and chemical conditions under which planet formation …

Astronomers have discovered thousands of planets outside the Solar System, most of which
orbit stars that will eventually evolve into red giants and then into white dwarfs. During the …

The second Gaia data release (Gaia DR2) contains, beyond the astrometry, three-band
photometry for 1.38 billion sources. One band is the G band, the other two were obtained by …

Context. The relevance of M dwarfs in the search for potentially habitable Earth-sized
planets has grown significantly in the last years. Aims. In our on-going effort to …

Luminous quasars at $ z\gt 5.6$ can be studied in detail with the current generation of
telescopes and provide us with unique information on the first gigayear of the universe. Thus …

The variable stars in the VSX catalogue are derived from a multitude of inhomogeneous
data sources and classification tools. This inhomogeneity complicates our understanding of …

We present results of a spectroscopic survey for new K-and M-type members of Scorpius–
Centaurus (Sco–Cen), the nearest OB Association (∼ 100–200 pc). Using an X-ray, proper …