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.

  • Logo IAC

    The Instituto de Astrofísica de Canarias (IAC) has received and will appeal the sentence, which is not firm, related to the cancelling of the concession for the land which should house the Thirty Metre Telescope (TMT) in La Palma. In 2019 the Cabildo of La Palma, following approval by a full session of the Town Council of Puntagorda, and a detailed environmental study, conceded to the IAC the land on which the TMT could be built. This concession was made conditional on the decision within a few years, which have not yet expired, that the International TMT Observatory would decide to build it

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  • Image of the solar atmosphere showing a coronal mass ejection. Credit: NASA/SDO

    In 1998, the journal Nature published a seminal letter concluding that the mysterious polarization signal that had been recently discovered in the light emitted by the sodium atoms of the solar atmosphere implies that the solar chromosphere (a very important layer of the solar atmosphere) is practically unmagnetized, in sharp contradiction with common wisdom. This paradox motivated laboratory experiments and theoretical investigations, which instead of providing a solution, raised new issues and even led some scientists to question the quantum theory of radiation-matter interaction. In an

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  • Scatter plot of oscillation amplitude and damping ratio values for 101 loop oscillation cases. The symbols and their colors indicate the levels of evidence obtained for the nonlinear (NL) and the linear resonant absorption (RA) models.

    The solar coronal heating problem originated almost 80 years ago and remains unsolved. A plausible explanation lies in mechanisms based on magnetic wave energy dissipation. Currently, several linear and nonlinear wave damping models have been proposed. The advent of space instrumentation has led to the creation of catalogues containing the properties of a large number of loop oscillation events. When the damping ratio of the oscillations is plotted against their oscillation amplitude, the data are scattered forming a cloud with a triangular shape. Larger amplitudes correspond in general to

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  • Disco dorado Voayager

    La II edición de este proyecto de divulgación científica mostrará la belleza y riqueza del patrimonio cultural del concejo de Allande (Asturias) a través de la Astronomía, del 20 al 22 de agosto. Tras el éxito de la primera edición, el equipo multidisciplinar de “Allande Stars” volverá a subirse a su furgoneta de estrellas los días 20, 21 y 22 de agosto de 2021 para llevar la Ciencia a la zona rural. Con la misma pasión e ilusión que el año anterior, sus colaboradores recorrerán el concejo de Allande impartiendo talleres diurnos y nocturnos relacionados con la Astronomía y la Astrofísica

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  • Star formation density as a function of log(z+ 1).  Our results are the black dots and only for low-mass galaxies. Blue circles are data from the literature for high-mass galaxies.

    We present the analysis of a sample of Halpha, Hbeta and [OII] emission line galaxies from the OTELO survey, with masses typically below log(M*/Msun) = 9.4 and redshifts between 0.4<z<1.43. We study the star formation rate, star formation rate density, and number density and their evolution with redshift. We obtain a robust estimate of the specific star formation rate - stellar mass relation based on the lowest mass sample published so far. We also determine a flat trend of the star formation rate density and number density with redshift. Our results suggest a scenario of no evolution of the

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  • AEACI 2021 tutors and collaborators

    Under the title "Our home in the cosmic ocean", the seventh edition of the international summer course "Astronomy Education Adventure in the Canary Islands" has had 136 participants from 30 countries who have been trained in the latest discoveries about the Solar System and in the techniques and tools they can use to investigate it with their students. Several of the lectures from the course, given by researchers and science communicators, have just been published on the IAC's YouTube channel. For the seventh consecutive year, the Instituto de Astrofísica de Canarias (IAC) and NUCLIO, in

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