Context. Fossil groups (FGs) are groups or clusters of galaxies with a single, massive, central galaxy dominating their luminosity distribution, and with a...

Context. The most accepted scenario for the origin of fossil groups is that they are galaxy associations in which the merging rate was fast and efficient. These...

Aims. We investigated binary-lens events from the 2022–2024 microlensing surveys, aiming to identify events suitable for lens mass measurements. We focused on...

We report the discovery of four massive (M > 0.8 M⊙) ZZ Ceti white dwarfs, including an ultramassive 1.16 M⊙ star. We obtained ground-based, time series...

Aims: With the aim of finding short-term planetary signals, we investigated the data collected from current high-cadence microlensing surveys. Methods: From...

Context. Dome C in Antarctica is a promising site for photometric observations thanks to the continuous night during the Antarctic winter and favorable weather...

LZ Cen is a double-lined, near-contact but detached eclipsing binary consisting of two evolved early B stars (B0.5-B1). This paper presents the first...

We study the bounds that can be obtained on four-fermion contact terms from the experimental data for e+p-->ν¯X obtained at DESY HERA and pp¯-->e+/- ν(-)...

This paper reports on a near-infrared survey of early-type galaxies designed to provide information on bar strengths, bulges, disks, and bar parameters in a...