Context. Open clusters are convenient probes of the structure and history of the Galactic
disk. They are also fundamental to stellar evolution studies. The second Gaia data release …

Context. Many of the open clusters listed in modern catalogues were initially reported by
visual astronomers as apparent overdensities of bright stars. As observational techniques …

ABSTRACT The Southern Photometric Local Universe Survey (S-PLUS) is imaging∼ 9300
deg2 of the celestial sphere in 12 optical bands using a dedicated 0.8 m robotic telescope …

The spiral structure in the solar neighborhood is an important issue in astronomy. In the past
few years, there has been significant progress in observation. The distances for a large …

Context. Previous studies of open clusters have shown that lithium depletion is not only
strongly age dependent but also shows a complex pattern with other parameters that is not …

Despite their shared origin, members of globular clusters display star-to-star variations in
composition. The observed pattern of element abundances is unique to these stellar …

We present the results of a spectroscopic monitoring program of the Pleiades region aimed
at completing the census of spectroscopic binaries in the cluster, extending it to longer …

Astronomical broker systems, such as Automatic Learning for the Rapid Classification of
Events (ALeRCE), are currently analyzing hundreds of thousands of alerts per night …

Runaway stars are ejected from their place of birth in the Galactic disk, with some young B-
type runaways found several tens of kiloparsecs from the plane traveling at speeds beyond …

Light curves of 57 classical Be stars in TESS sectors 1–15 are examined. In most Be stars,
the periodogram shows groups at a fundamental and one or more harmonics, which we …