Context. The formation and evolution of late-type galaxies have traditionally been described in terms of two pathways, one producing pressure-supported classical bulges and the other producing rotationally supported pseudo-bulges. Early studies supporting this view were primarily based on photometric decompositions that assumed an exponential disk

Context. A particularly intriguing subclass of rocky exoplanets are ultra-short-period worlds, which orbit their host stars in less than a day. These planets are particularly rare around M dwarf stars, and only ten of them have a constrained mass and radius so far. Aims. We present the validation and characterisation of the ultra-short-period (0.3

We present the detection and validation of a small, temperate transiting exoplanet orbiting TOI-1080 every 3.9652482 $_{-0.0000015}^{+0.0000014}$ d. The host is a quiet M4V star at 25.6 pc. The planet signal was first detected by the Transiting Exoplanet Survey Satellite (TESS) and validated using TESS and ground-based observations. By fitting the

Context. µ Herculis is a bright, nearby quadruple system. Its brightest member, µ Her Aa, displays solar-like oscillations, establishing the system as a crucial benchmark for asteroseismology, provided that its mass can be determined independently of stellar models. Aims. We aim to resolve the full hierarchical architecture of the system and

We present a new set of 35 transit light curves of the hot Jupiter WASP-43 b, obtained through the SPEARNET network. These datasets were analyzed together with previously published ground-based observations, as well as space-based data from TESS, Hubble Space Telescope (HST), and JWST, to refine the planetary parameters of WASP-43 b. A total of 188

Context. Ambipolar diffusion is increasingly recognised as a key process in the lower solar atmosphere. Its highly non-linear behaviour has many non-intuitive aspects. Aims. We seek to (a) study 1D Cartesian ambipolar diffusion near null points; (b) characterise the non-linear eigenmodes for ambipolar diffusion; and (c) propose tests for ambipolar