Results 21 to 30 of about 1,627 (157)

Chemical and Photometric Evolution Models for Disk, Irregular, and Low Mass Galaxies

open access: yesAdvances in Astronomy, Volume 2014, Issue 1, 2014., 2014
We summarize the updated set of multiphase chemical evolution models performed with 44 theoretical radial mass initial distributions and 10 possible values of efficiencies to form molecular clouds and stars. We present the results about the infall rate histories, the formation of the disk, and the evolution of the radial distributions of diffuse and ...
Mercedes Mollá, Jorge Iglesias Páramo
wiley   +1 more source

Legalidad islámica y legitimidad política en el Califato de Córdoba: la proclamación de Hišām II

open access: yesAl-Qantara : Revista de Estudios Arabes, 2008
Este artículo aborda el proceso de proclamación como califa de Córdoba de Hišām, hijo y sucesor de al-Ḥakam II, cuando era todavía un niño de apenas once años. En relación con este aspecto, se analizan dos problemas.
Alejandro García Sanjuán
doaj   +1 more source

Imaging FTS: A Different Approach to Integral Field Spectroscopy

open access: yesAdvances in Astronomy, Volume 2014, Issue 1, 2014., 2014
Imaging Fourier transform spectroscopy (iFTS) is a promising, although technically very challenging, option for wide‐field hyperspectral imagery. We present in this paper an introduction to the iFTS concept and its advantages and drawbacks, as well as examples of data obtained with a prototype iFTS, SpIOMM, attached to the 1.6 m telescope of the ...
Laurent Drissen   +8 more
wiley   +1 more source

Properties of the Hii Regions Derived Using Integral Field Spectroscopy

open access: yesAdvances in Astronomy, Volume 2013, Issue 1, 2013., 2013
Here we review some of our more recent results on the observed properties of Hii regions using Integral Field Spectroscopy. In particular, we illustrate the use of this technique to study in detail the ionization conditions across the nebulae for galactic Hii regions (focused on the Orion Nebula) and the statistical study of large samples of ...
Sebastian F. Sánchez   +1 more
wiley   +1 more source

Una fuente ignorada de ca. 750 sobre la prohibición de las imágenes por los califas ‘Umar (717-720) y Yazīd II (720-723)

open access: yesEstudios Bizantinos, 2023
Se da a conocer una pasaje de la crónica del 754 que confirma que el califa Yazid II, por indicación de su primo y predecesor Umar, prohibió los iconos cristianos en las paredes de las iglesias.
Juan Signes Codoñer
doaj   +1 more source

The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era

open access: yesAdvances in Astronomy, Volume 2013, Issue 1, 2013., 2013
A new generation of wide‐field emission‐line surveys based on integral field units (IFU) is allowing us to obtain spatially resolved information of the gas‐phase emission in nearby late‐type galaxies, based on large samples of HII regions and full two‐dimensional coverage.
Fernando Fabián Rosales-Ortega   +1 more
wiley   +1 more source

Luchas, tendencias y corolarios del movimiento estudiantil de la Universidad Nacional de Rosario

open access: yesAvances del Cesor, 2020
En este artículo se abordan las luchas del movimiento estudiantil de la Universidad Nacional de Rosario, entre los golpes de Estado de 1966 y 1976. El trabajo se propone retratar con precisión la evolución de las formas de acción, los protagonismos de ...
Juan Sebastián Califa
doaj   +1 more source

The Mitchell Spectrograph: Studying Nearby Galaxies with the VIRUS Prototype

open access: yesAdvances in Astronomy, Volume 2013, Issue 1, 2013., 2013
The Mitchell Spectrograph (a.k.a. VIRUS‐P) on the 2.7 m Harlan J. Smith telescope at McDonald Observatory is currently the largest field of view (FOV) integral field unit (IFU) spectrograph in the world (1.7′ × 1.7′). It was designed as a prototype for the highly replicable VIRUS spectrograph which consists of a mosaic of IFUs spread over a 16 ...
Guillermo A. Blanc   +1 more
wiley   +1 more source

Estudiantes, organizaciones y luchas en Argentina entre 1966 y 1976. Un análisis cuantitativo

open access: yesRevista de Historia Americana y Argentina, 2023
En este artículo analizamos la evolución del movimiento estudiantil en Argentina entre los golpes de Estado de 1966 y 1976 a partir de un examen cuantitativo de sus enfrentamientos sociales en la UBA, la UNLP, la UNC, la UNR y la UNT.
Juan Sebastián Califa, Mariano Millán
doaj   +1 more source

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