We present photometric observations in Sloan filters g', i' of the eclipsing W UMa stars USNO-A2.0 1350-17365531, V471 Cas, V479 Lac and V560 Lac. The sinusoidal-like O-C diagram of V471 Cas shows presence of third body with mass of 0.12 Msun (red dw...
Knowledge of ages for stars formed over a galaxy's lifetime is fundamental to understand its formation and evolution. However, stellar ages are difficult to obtain since they cannot be measured from observations, being comparison with stellar models...
4U 1556-60 is a low-mass X-ray binary that was discovered more than 50 years ago as a persistent X-ray source; however, very little was known about it. Recently, Gaia obtained a parallax for the optical counterpart that places 4U 1556-60 at a distanc...
Now that we know that Earth-like planets are ubiquitous in the universe, as well as that most of them are much older than the Earth, it is justified to ask to what extent evolutionary outcomes on other such planets are similar, or indeed commensurabl...
Aprende qué es la meditación y cómo empezar desde cero. Una guía clara y accesible para comenzar a meditar paso a paso sin experiencia previa.
Feb 5, 2026 · Cinemas NOS Évora Plaza Cinemas NOS Ferrara Plaza Cinemas NOS Forum Madeira Cinemas NOS Forum Montijo Cinemas NOS Foz Plaza Cinemas NOS Gaia Shopping Cinemas NOS …
Aims. The evolutionary status of the blue supergiant Sher 25 and its membership to the massive cluster NGC 3603 are investigated. Methods. A hybrid non-LTE (local thermodynamic equilibrium) spectrum synthesis approach is employed to analyse a high-re...
Stellar physical and dynamical properties are essential knowledge to understanding the structure, formation, and evolution of our Galaxy. We produced an all-sky uniformly derived catalog of stellar astrophysical parameters (APs; age, mass, temperatur...
Jan 5, 2025 · Sophia, as the Gnostic goddess of wisdom, embodies the vital role of the Divine Feminine in spiritual enlightenment. Her myth conveys profound truths about the nature of reality, the human …
VizieR package to query large tables (Gaia, 2MASS, SDSS, WISE, ...) including whole download capability (⭐ 22)
The release of Gaia catalog is revolutionary to the astronomy of solar system objects. After some effects such as atmospheric refraction and CCD geometric distortion have been taken into account, the astrometric precision for ground-based telescopes...
HD 175167b is a cold ($P_{b}\sim 1200$ days) Jupiter with a minimum mass of $M_{p}\sin i=7.8\pm3.5\ M_J$ orbiting a Sun-like star, first discovered by the Magellan Planet Search Program based on MIKE observations. Through a joint analysis of the MIKE...
With new catalogues arriving such as the Gaia DR1, containing more than a billion objects, new methods of handling and visualizing these data volumes are needed. In visualization, one problem is that the number of datapoints can become so large, that...
Space observatories like the Hubble Space Telescope and Gaia are providing unprecedented 6D phase space information of satellite galaxies. Such measurements can shed light on the structure and assembly history of the Local Group, but improved statist...
A curious rotation period distribution in the Color-Magnitude-Period Diagram (CMPD) of the Kepler field was recently revealed, thanks to data from Gaia and Kepler spacecraft. It was found that redder and brighter stars are spinning slower than the re...
Hipparcos, the first ever experiment of global astrometry, was launched by ESA in 1989 and its results published in 1997 (Perryman et al., Astron. Astrophys. 323, L49, 1997; Perryman & ESA (eds), The Hipparcos and Tycho catalogues, ESA SP-1200, 1997)...
Context. In Gaia era, atmospheric turbulence, which causes stochastic wander of a star image, is a fundamental limitation to the astrometric accuracy of ground-based optical imaging. However, the positional bias caused by turbulence (called turbulenc...
**THIS POST IS NOT TRYING TO TELL ANYBODY THEY'RE INCORRECT FOR PREFERRING A CERTAIN EDITION, OR THAT ANY SINGLE ONE IS BETTER IN ALL ASPECTS TO ANOTHER!** It is my opinion that every edition of a TT...
The on-going vertical phase mixing, manifesting itself as a snail shell in the $Z-V_{Z}$ phase space, has been discovered with the Gaia DR2 data. To better understand the origin and properties of the phase mixing process, we study the vertical phase-...
Mar 13, 2023 · The Titans were twelve powerful deities, born from the union of the primordial gods Uranus and Gaia. Cronus, the youngest of the Titans, overthrew Uranus to become ruler of the …