Although M dwarfs are known for high levels of stellar activity, they are ideal targets for the search of low-mass exoplanets with the radial velocity (RV) method. We report the discovery of a planetary-mass companion around LSPM J2116+0234 (M3.0 V) and confirm the existence of a planet orbiting GJ 686 (BD+18 3421; M1.0 V). The discovery of the

[KKS2000]04 (NGC 1052-DF2) has become a controversial and well-studied galaxy after the claims suggesting a lack of dark matter and the presence of an anomalously bright globular cluster (GC) system around it. A precise determination of its overall star formation history (SFH) and a better characterization of its GC or planetary nebulae (PNe)

Context. The X-shooter Spectral Library (XSL) is an empirical stellar library at medium spectral resolution covering the wavelength range from 3000 Å to 24 800 Å. This library aims to provide a benchmark for stellar population studies. Aims: In this work, we present a uniform set of stellar atmospheric parameters, effective temperatures, surface

We report the discovery of a Spitzer microlensing planet OGLE-2018-BLG-0596Lb, with preferred planet-host mass ratio q ∼ 2 × 10‑4. The planetary signal, which is characterized by a short (∼1 day) “bump” on the rising side of the lensing light curve, was densely covered by ground-based surveys. We find that the signal can be explained by a bright

El estudio de las abundancias solares se remonta al análisis de Russell de 1929 y, desde entonces, se ha vuelto un tema muy relevante para la astrofísica en general. Esto es debido a que conocer la composición química del Sol es fundamental para construir modelos precisos de la atmósfera y el interior del Sol y de otras estrellas. Además, la

A lo largo de las últimas decadas, importantes evidencias observacionales han revelado que los Cúmulos Globulares (CG) en la Vía Láctea albergan distintas poblaciones estelares. Representando clásicamente los mejores ejemplos en la naturaleza de Poblaciones Estelares Simples, estos nuevos hallazgos han puesto a los CG en el centro de atención. En