White dwarf stars are the final evolutionary stage of the vast majority of stars, including our
Sun. Since the coolest white dwarfs are very old objects, the present population of white …

White dwarfs are the final remnants of low-and intermediate-mass stars. Their evolution is
essentially a cooling process that lasts for∼ 10 Gyr. Their observed properties provide …

The Gaia mission has provided an unprecedented wealth of information about the white
dwarf population of our Galaxy. In particular, our studies show that the sample up to 100 pc …

The contribution of white dwarfs of the different Galactic populations to the stellar content of
our Galaxy is only poorly known. Some authors claim a vast population of halo white dwarfs …

Aims. By pushing the magnitude limit of high proper motion surveys beyond the limit of
photographic Schmidt plates, we aim to discover nearby and very fast low-luminosity objects …

The phrase dark matter goes back to 1922, and the concept of things that exist but are not, or
cannot be, seen to the ancients. Here is one version of how the phrase was gradually …

Studying galaxies helps scientists understand better the structure and history of the
Universe. The properties of galaxies, such as their dynamics and evolution, can be inferred …

Context. The nature of the several microlensing events observed by the MACHO team
towards the Large Magellanic Cloud (LMC) is still a subject of debate. Low-mass substellar …

The nature of the several microlensing events observed by the MACHO team towards the
Large Magellanic Cloud (LMC) is still a controversial subject. Substellar objects and stars …

The intention here is to summarize aspects of observational astronomy relevant to light
curve acquisition and modeling. Thus, we discuss passband 1 profiles of observational data …