Results 31 to 40 of about 92,651 (143)

Algunos problemas de la astronomía maya

open access: yes, 2012
La complicada orbita de la luna con sus muchas y delicadas desviaciones y particularidades, presenta un problema de computacion mas dificil que para el curso del so1, aun para los astronomos modernos. No nos sorprende por lo tanto que el Calendario Lunar
Ramón Schulz Friedemann
semanticscholar   +1 more source

Mid-IR Observations of IRAS, AKARI, WISE/NEOWISE, and Subaru for Large Icy Asteroid (704) Interamnia: A New Perspective of Regolith Properties and Water Ice Fraction

open access: yesThe Astrophysical Journal, 2023
(704) Interamnia is one of the largest asteroids located in the outer main-belt region, which may contain a large amount of water ice underneath its surface.
Jiang Haoxuan   +5 more
doaj   +1 more source

Modeling the Chromosphere and Transition Region of Planet-hosting Star GJ 436

open access: yesThe Astrophysical Journal, 2023
Ahead of upcoming space missions intending to conduct observations of low-mass stars in the ultraviolet (UV) spectral region it becomes imperative to simultaneously conduct atmospheric modeling from the UV to the visible (VIS) and near-infrared (NIR ...
Dominik Hintz   +14 more
doaj   +1 more source

The Colorado Ultraviolet Transit Experiment Mission Overview

open access: yesThe Astronomical Journal, 2023
Atmospheric escape is a fundamental process that affects the structure, composition, and evolution of many planets. The signatures of escape are detectable on close-in, gaseous exoplanets orbiting bright stars, owing to the high levels of extreme ...
Kevin France   +20 more
doaj   +1 more source

Evaluación de la transferencia de la formación permanente: análisis de una experiencia de talleres sobre astronomía [PDF]

open access: yes, 2016
In the framework of a European project to bring astronomy near to children, several permanent teachers training activities were developed. These actions included workshops with teachers from various stages of the educational system.Postprint (published ...
Cano Garcia, Elena   +2 more
core   +1 more source

Assessing the Reliability of the Pseudo‐Thellier Estimates in Fired Ceramics and Source Clays

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 7, July 2025.
Abstract The geomagnetic field's intensity is key to understanding the Earth's core dynamics and their surface impacts. While the Thellier–Thellier method remains the standard for recovering absolute paleointensity from baked materials, it is time‐consuming and may alter magnetic mineralogy due to heating cycles. The pseudo‐Thellier method offers a non‐
Wilbor Poletti   +7 more
wiley   +1 more source

LOS NEVADOS DE ACONQUIJA COMO SITIO DE FRONTERA Y ESPACIO DE OBSERVACIÓN LUNAR, TUCUMAN, NOROESTE DE ARGENTINA

open access: yesEstudios Atacameños
Se presentan los aspectos sociales vinculados al concepto de frontera, el ushnu y la observación lunar en el sitio inca de La Ciudacita, provincia de Tucumán, noroeste de Argentina.
Ricardo Moyano, Martín Gustavo Díaz
doaj   +1 more source

Astronomía alfonsí en Morella a finales del siglo XIV [PDF]

open access: yes, 2000
Nota de investigaciónPeer reviewedFecha 2014-07-30.--Fujitsu ScanSnap iX500.--Unidad técnica IHMC.--Archivo depósito IHMC.--Solo se permite el uso con fines educativos y de ...
Chabás, José
core  

The development of a Utopian city? Comparing land-and skyscapes in Santa Cruz de Tenerife and San Cristobal de la Laguna [PDF]

open access: yes, 2018
We discuss the peculiar planning of the city of San Cristóbal de La Laguna, in the Canary Island of Tenerife (Spain), when compared to the nearby and essentially contemporary Santa Cruz de Tenerife, which served as a maritime port of the former city. For
Belmonte, Juan Antonio   +1 more
core   +2 more sources

JWST imaging of the closest globular clusters—I. Possible infrared excess among white dwarfs in NGC 6397

open access: yesAstronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We present James Webb Space Telescope observations of the globular cluster NGC 6397 and use them to extend to infrared wavelengths the characterization of the cluster's entire white dwarf (WD) cooling sequence (CS). The data allows us to probe fundamental astrophysical WD properties and to search for evidence in their colors for (or against ...
L. R. Bedin   +11 more
wiley   +1 more source

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