Super and massive AGB stars - III. nucleosynthesis in metal-poor and very...
We present a new grid of stellar models and nucleosynthetic yields for super-AGB stars with metallicities Z = 0.001 and 0.0001, applicable for use within galactic chemical evolution models. Contrary to...
View ArticleWhite dwarf dynamical interactions
Merging white dwarfs is a promising channel to trigger Type Ia supernovae, known as the double degenerate scenario. Supernovae are stellar explosions that radiate as much energy as any ordinary star is...
View ArticleConstraining the double-degenerate scenario for Type Ia supernovae from...
We follow the mass expelled during the WD-WD merger process in a particular case of the double-degenerate (DD) scenario for Type Ia supernovae (SNe Ia), and find that the interaction of the SN ejecta...
View ArticleWhite dwarf evolutionary sequences for low-metallicity progenitors: The...
Context. White dwarfs are nowadays routinely used as reliable cosmochronometers, allowing several stellar populations to be dated.; Aims. We present new white dwarf evolutionary sequences for...
View ArticleSuper- and massive AGB stars - IV. Final fates initial-to-final mass relation
We explore the final fates of massive intermediate-mass stars by computing detailed stellar models from the zero-age main sequence until near the end of the thermally pulsing phase. These...
View ArticleNovel ionospheric activity indicator specifically tailored for GNSS users
This work introduces a novel ionospheric activity indicator useful for identifying disturbed periods affecting performance for GNSS users, at regional level. This indicator is based in the “Along Arc...
View ArticleTransitions between symmetric and nonsymmetric regimes in binary-mixture...
We present here a comprehensive picture of the different bifurcations found for small to moderate Rayleigh number in binary-mixture convection with lateral heating and negative separation ratio (S)....
View ArticlePopulation Synthesis of Post-Common Envelope White-Dwarf-Main-Sequence...
We present preliminary results of detailed Monte Carlo simulations of the population of white dwarf-main sequence binary systems in the Sloan Digital Sky Survey Data Release 7 (SDSS DR7). We have used...
View ArticleThe white dwarf cooling sequence of 47 Tucanae
Context. 47 Tucanae is one of the most interesting, well-observed, and theoretically studied globular clusters. This allows us to determine the reliability of our understanding of white dwarf cooling...
View ArticleConstraining the neutrino magnetic dipole moment from white dwarf pulsations
Pulsating white dwarf stars can be used as astrophysical laboratories to constrain the properties of weakly interacting particles. Comparing the cooling rates of these stars with the expected values...
View ArticleThe variation of the fine structure constant: testing the dipole model with...
The large-number hypothesis conjectures that fundamental constants may vary. Accordingly, the space-time variation of fundamental constants has been an active subject of research for decades. Recently,...
View ArticleSpiral instability can drive thermonuclear explosions in binary white dwarf...
Thermonuclear, or Type Ia supernovae (SNe Ia), originate from the explosion of carbon-oxygen white dwarfs, and serve as standardizable cosmological candles. However, despite their importance, the...
View ArticleA Chandrasekhar mass progenitor for the type Ia supernova remnant 3C 397 from...
Despite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is close...
View ArticleGIM-TEC adaptive ionospheric weather assessment and forecast system
The Ionospheric Weather Assessment and Forecast (IWAF) system is a computer software package designed to assess and predict the world-wide representation of 3-D electron density profiles from the...
View ArticleResults of the verification of the NIR MOS EMIR
EMIR is one of the first common user instruments for the GTC, the 10 meter telescope operating at the Roque de los Muchachos Observatory (La Palma, Canary Islands, Spain). EMIR is being built by a...
View ArticleREVISTA MEXICANA DE ASTRONOMÍA Y ASTROFÍSICA, A REAL OPTION FOR ASTRONOMICAL...
Presentamos datos estadísticos sobre la Revista Mexicana de Astronomía y Astrofísica. Consideramos que esta publicación está bien posicionada en la literatura astronómica internacional. Igualmente,...
View ArticleEMIR, the GTC nir multi-object imager-spectrograph
EMIR, que esta actualmente cubriendo sus fases de fabricación y AIV, será uno de los primeros instrumentos de uso común en GTC el telescopio de 10m en construcción por GRANTECAN en el Observatorio del...
View Article¿Qué buscan en el cielo todos aquellos ciegos?
Hoy en día vivimos un momento único en la astronomía. Con el auge de las tecnologías espaciales y gracias al desarrollo científico de la segunda mitad del siglo XX, han podido abrirse nuevas ventanas...
View ArticleEl discurso de la ciencia y la tecnología en la prensa escrita chilena:...
La comunicación de la ciencia y la tecnología (C&T) ha cobrado gran relevancia en los últimos años, inicialmente a través de artículos científicos y actualmente através de los medios masivos de...
View ArticleQuality evaluation of DInSAR results from the phase statistical analysis
The Earth is continuously monitored by sensors capable of providing diversified information about several phenomena. In particular Synthetic Aperture Radar (SAR) is able to observe the Earth in all-day...
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