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.

  • This image presents the region around the galaxy NGC 1052-DF4, taken by the IAC80 telescope at the Teide Observatory in Tenerife. The figure highlights the main galaxies in the field-of-view, including NGC 1052-DF4 (center of the image), and its neighbor NGC 1035 (center left).
    A mechanism for removing dark matter from galaxies has been found

    The small fraction of dark matter in the galaxy NGC1052-DF4 has worried the astronomical community for several years. Now a team of researchers from the Instituto de Astrofísica de Canarias (IAAC) the University of La Laguna (ULL) the University of New South Wales, the Insituto de Astrofísica de Andalucia, and NASA’S Ames Research Center have found a mechnism which can esplain it. This finding, which is to be published in the scientific journal The Astrophysical Journal, manages to make this phenomenon fit with accepted models of formation and evolution of galaxies.

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  • Heavy-element abundance pattern for a P-rich star (blue stars), together with the abundances of stars representative of the s- (CH; red),  i- (CEMP-i; magenta), and r- (EMP-r; green) neutron capture processes. The P-rich stars heavy-element pattern is more similar to the CH stars or the s-process.
    A new stellar site for the formation of very heavy elements

    The recently discovered phosphorus-rich stars pose a challenge to stellar evolution and nucleosynthesis (that is, the formation of chemical elements in stellar interiors) theory, as none of the existing models can explain their extremely peculiar chemical abundances pattern. Apart from the large phosphorus (P) enhancement, such stars also show enhancement in other light (O, Mg, Si, Al) and heavy (e.g., Ce) elements. Thanks to the Spanish Service Time at the Nordic Optical Telescope, we have recently obtained high-resolution optical spectra of two optically bright phosphorus-rich stars

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  • Artist's impression of a hot star plagued by a giant magnetic spot (Credit: ESO/L. Calçada, INAF-Padua/S. Zaggia).
    A Plague of Magnetic Spots Among the Hot Stars of Globular Clusters

    For more than six decades, the quest to understand the formation of hot (about 20,000−30,000 K) extreme horizontal branch (EHB) stars in Galactic globular clusters has remained one of the most elusive in stellar evolutionary theory. Here we report on two discoveries that challenge the idea of the stable luminosity of EHB stars. The first mode of EHB variability is periodic and cannot be ascribed to either binary evolution or pulsation. Instead, we attribute it here to the presence of magnetic spots: superficial chemical inhomogeneities whose projected rotation induces the variability. The

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  • Proposed model to explain the color diversity observed on the surface of Bennu.
    Colouring asteroid Bennu

    The main objective of the NASA OSIRIS-REx mission is the collection of material from the surface of primitive asteroid (101955) Bennu, and to bring it back to the Earth. To provide general context to the results obtained from the analysis of this sample it is fundamental to carry out an extensive study of the surface of the asteroid. To do that, the spacecraft is provided, among other instruments, with an optical camera (MapCam) equipped with 4 color filters b’, v, w, and x, centered at 473, 550, 698, and 847 nm, respectively. This set-up allowed to do color studies, i.e., to analyze how the

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  • Image of PINRELL - Prototype for INfraREd analysis of Lower Limbs, designed and built by the team at Medical Technology. Credit: Carlos Colodro and Sara González
    Astrophysical Technology for early detection of diabetic foot neuropathy

    Today, November 14th, World Diabetes Day, we celebrate that the prototype PINRELL (Prototype for INfraREd analysis of Lower Limbs) of the Medical Technology Programme (TECMED) of IACTEC, has passed the preliminary proofs of concept and is in the initialization phase for the start of clinical trials. The prototype has been developed in the programme of Medical Technology within IACTEC, the area of technological and business collaboration of the Instituto de Astrofísica de Canarias (IAC), which has economic support (Training Programme) and infrastructure support (the IACTEC building) from the

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  • Wifi Controller at the IAC Headquarters in La Laguna. Credit: Jorge Goya.
    The IAC renews its WiFi network platform

    The Instituto de Astrofísica de Canarias (IAC) has finished, during October, with the help of FEDER funds, the renewal of the whole platform of the Wifi network of its facilities. The new technology, provided by Aruba, will allow higher speeds, improving the quality of the signal and increasing the security of the users. This is a project which has been steadily implemented centre by centre and, during the health crisis, it has been given a push forward in the Teide Observatory and in the Roque de los Muchachos Observatory, and completed in record time, mainly due to the absence of personnel

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