The formation of massive galaxies remains a fundamental question in astrophysics, with recent JWST observations suggesting that intense star formation occurred earlier than previously expected. We used the prototypical massive relic galaxy NGC 1277 as a fossil record to probe the chemical signatures of early star formation. With a stellar mass of 1

We present a spatially resolved analysis of the stellar populations in the inner kiloparsec of NGC 3884, 3C 293, and CGCG 012-070. Using near-infrared spectroscopy, we reconstruct their star formation histories (SFHs) by comparing the M13, XSL, and FSPS stellar population synthesis models. The stellar light is dominated by intermediate-age to old

Context. HAT-P-26 b is a well-characterized Neptunian exoplanet (R p ≃ 6.33 R ⊕) orbiting a K1V star. It lies within the Neptunian ridge (P orb ≃ 4.2345 days), following a moderately eccentric orbit (e ≃ 0.12) and hosting a water-rich atmosphere. The possible presence of a stellar companion hinted at by near-infrared (NIR) spectral emission, along

Context. Understanding which stars explode as which type of supernova (SN) is crucial to measure their contribution to the metal production and feedback halting star formation. Most studies of the gas in the environment of SNe are limited by a small sample size (< 10), hampering any statistical conclusions about their nature. Aims. The goal of this

Gas giant planets with periods $20~\lt ~P~\lt ~300~\rm d$ orbiting Sun-like stars are a relatively uncommon outcome of planetary formation, and key questions about the nature and formation of this subpopulation remain unanswered. Theoretical models for the location of their formation (in situ or ex situ) and for their subsequent migration predict

4U~1700--37 is a wind-fed high-mass X-ray binary hosting a compact object, likely a neutron star, accreting from the O6.5~Iaf$^+$ supergiant HD~153919. Despite decades of observations, no coherent pulsations or firm magnetic field estimates exist. We study the hard X-ray timing and broadband spectrum of 4U~1700--37 using \textit{NuSTAR} to search