As part of the KESPRINT collaboration, we present the discovery and characterization of three exoplanets in the sub-Neptune to super-Neptune regime, spanning key regions of the exo-Neptunian landscape. TOI-1472 c and TOI-1648 b are newly discovered sub-Neptunes, while TOI-1472 b is a previously known super-Neptune for which we provide an improved

Context. The K2-138 system consists of a K-dwarf transited by six planets in the sub-Neptune regime, with radii ranging from 1.5 to 3.4 R ⊕ and orbital periods of between 2.3 and 42 days. The five innermost planets form a chain of zero-order three-body resonances, while the outermost planet is suspected to be linked to the chain through a first

Aims. This study focuses on the low-mass binary 2MASS J05082729-2101444 (2M0508-21), one of the few known radio-loud members of the complex periodic variable sample. Our aim is to use very long baseline interferometry to constrain the orbit. Methods. We observed the system with the Very Long Baseline Array (VLBA) in three epochs at a frequency of 4

Wind-fed accretion onto magnetised neutron stars drives long-term spin variability that can be used to trace angular-momentum transfer in structured stellar outflows. We analyse five years of TESS optical timing to measure the spin evolution of the wind-fed X-ray pulsar 4U 1954+319, which hosts the slowest known accretion-powered pulsar. Coherent

Context. Green Pea galaxies (GPs) are local starburst galaxies that serve as analogs for high-redshift star-forming galaxies, particularly Lyman continuum leakers. Historically considered isolated dwarfs, it remains debated whether their starbursts are driven by internal secular processes or external triggers. Aims. We aim to constrain the role of