Results 31 to 40 of about 13,319 (176)
Photoionization models of the CALIFA H II regions [PDF]
Astronomy & Astrophysics, 2016 Photoionization models of HII regions require as input a description of the ionizing SED and of the gas distribution, in terms of ionization parameter U and chemical abundances (e.g. O/H and N/O). A strong degeneracy exists between the hardness of the SED and U, which in turn leads to high uncertainties in the determination of the other parameters ...
Morisset, C. +9 more
openaire +6 more sources
Estudios 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
Angular Momentum across the Hubble sequence from the CALIFA survey [PDF]
, 2014 We investigate the stellar angular momentum of galaxies across the Hubble sequence from the CALIFA survey. The distribution of CALIFA elliptical and lenticular galaxies in the $\lambda_{\rm Re}-\epsilon_{\rm e}$ diagram is consistent with that shown by ...
collaboration, the CALIFA +3 more
core +1 more source
Chemical and Photometric Evolution Models for Disk, Irregular, and Low Mass Galaxies
Advances 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
Luchas, tendencias y corolarios del movimiento estudiantil de la Universidad Nacional de Rosario
Avances 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
Imaging FTS: A Different Approach to Integral Field Spectroscopy
Advances 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
Spectral evidence of solar neighborhood analogs in CALIFA galaxies
Astronomy & Astrophysics, 2022 Aims. We introduce a novel nonparametric method to find solar neighborhood analogs (SNAs) in extragalactic integral field spectroscopic surveys. The main ansatz is that the physical properties of the solar neighborhood (SN) should be encoded in its optical stellar spectrum. Methods.
A. Mejía-Narváez +5 more
openaire +2 more sources
Estudiantes, organizaciones y luchas en Argentina entre 1966 y 1976. Un análisis cuantitativo
Revista 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
The nature of LINER galaxies: Ubiquitous hot old stars and rare accreting black holes [PDF]
, 2013 Galaxies, which often contain ionised gas, sometimes also exhibit a so-called low-ionisation nuclear emission line region (LINER). For 30 years this was attributed to a central mass-accreting supermassive black hole (AGN) of low luminosity, making LINER ...
Alves, J. +21 more
core +2 more sources
Properties of the Hii Regions Derived Using Integral Field Spectroscopy
Advances 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