Tests have been carried out for the first time on the hypothesis that the structure of interstellar dust around galactic bars is determined by the velocity field of the gas. The dust is found in regions delineated by high gas speed gradients, something which had been proposed but not observed. The gradients themselves seem to be related to intense star-forming regions.
This section includes scientific and technological news from the IAC and its Observatories, as well as press releases on scientific and technological results, astronomical events, educational projects, outreach activities and institutional events.
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The linear polarization produced by scattering processes in the spectral lines of the IR triplet of Ca II can be observed near the edge of the solar disk. The cause of this polarization was considered a true enigma until the year 2003, in which IAC researchers could carry out sophisticated calculations based on the quantum theory of the spectral line polarization. In this way, they could demonstrate that the physical origin of the enigmatic polarization is the presence of "atomic polarization" in the lower levels of such spectral lines, which produces dichroism (i.e., selective absorption of
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Los investigadores ya han hecho su primer descubrimiento con este instrumento: un candidato a planeta extrasolar de la masa de Saturno
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Los políticos comprobarán la efectividad de la Ley del Cielo en Canarias, aprobada en 1988, que minimiza la contaminación lumínica
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La charla será ofrecida por el Prof. Joseph Silk,de la Universidad de Oxford
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Hoy jueves, 21 de noviembre, en el Instituto de Astrofísica de Canarias, se reúnen los miembros de la Red de la Organización Europea de Astronomía en el Norte
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