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.

  • GTC spectrum corresponding to the period when the P-Cyg profiles indicate the highest wind velocity. The insets show a zoom-in of the characteristic P-Cyg blueshifted absorption, indicating a wind velocity above 2000 km/s (Hα; red, dotted-dashed line).
    The changing-look optical wind of the flaring X-ray transient Swift J1858.6-0814

    The large amount of mass and angular momentum carried by disc winds makes them key processes to understand accretion onto compact objects, such as black holes and neutron stars. Here we present the discovery of an optical accretion disc wind in the X-ray transient Swift J1858.6-0814, a new binary system discovered in late 2018. Our 90-spectrum data set, taken with the 10.4 m Gran Telescopio Canarias (GTC), reveals the presence of conspicuous P-Cyg profiles in optical lines of helium and hydrogen. The evolution of these features indicates significant variations in the wind velocity, between a

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  • A snapshot from TESS of part of the southern sky showing the location of ν Indi (marked by the blue circle), the plane of the Milky Way (bottom left) and the southern ecliptic pole (top). These snapshots come from data collected in TESS observing sectors 1, 12 and 13 Credit: J. T. Mackereth.
    TESS satellite dates an ancient collision with our galaxy

    Earlier this year, a team of astrophysicists has revealed new insights on an ancient collision that our galaxy the Milky Way underwent with another smaller galaxy called Gaia-Enceladus early in its history. However the details on how and when that collision happened are not precisely known. The study of a single bright star called nu Indi, for which data from the NASA mission TESS (Transiting Exoplanet Survey Satellite), the ESA Gaia mission, and ground-based observations were combined, led to better characterize this event. Indeed, by applying a novel approach based on asteroseismology

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  • Planet absorption signature. a) In the stellar rest frame, the planetary absorption signal appears close to the expected Keplerian of the planet, superimposed in white with its 1σ uncertainty. Transit contacts are shown by white horizontal dashed lines. The gap around 0 km/s corresponds to the position of the Doppler shadow before its subtraction. b) In the planet rest frame, the shimmer is asymmetric and progressively blueshifts after ingress.
    Nightside condensation of iron in an ultrahot giant exoplanet

    Ultrahot giant exoplanets receive thousands of times Earth’s insolation. Their high-temperature atmospheres (greater than 2,000 kelvin) are ideal laboratories for studying extreme planetary climates and chemistry. Daysides are predicted to be cloud-free, dominated by atomic species and much hotter than nightside. Atoms are expected to recombine into molecules over the nightside, resulting in different day and night chemistries. Although metallic elements and a large temperature contrast have been observed, no chemical gradient has been measured across the surface of such an exoplanet

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  • Práctica guiada en el Teide para aprender a manejar el telescopio nocturno y realizar una observación astronómica. Crédito: Donovan Mclean/Enrique Mesa/IAC.
    El proyecto educativo "CosmoLAB" cumple dos años

    Gracias a este proyecto educativo, más de 200 profesores se han formado ya en los distintos cursos ofrecidos y han realizado actividades con 7.700 estudiantes de Primaria, Secundaria, Bachillerato y Formación Profesional en 90 centros escolares de Tenerife. En 2018 se inauguraba oficialmente el proyecto “CosmoLAB: El Sistema Solar como laboratorio en el aula” (…), desarrollado por el Instituto de Astrofísica de Canarias (IAC) y financiado por el Cabildo de Tenerife, a través del programa Tenerife

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  • Guido Münch. Crédito: Alchetron.
    GUIDO MÜNCH: «En Marte pudo haber vida, de la que tal vez se podrían encontrar restos fósiles si buscásemos en el lugar apropiado”

    Entrevista publicada en IAC Noticias. N° 1- 1994. Sección "A través del prisma" Propuesto por el Instituto de Astrofísica de Canarias al «Premio Príncipe Asturias de Investigación Científica y Técnica 1989», el Prof. Guido Münch es el primer astrónomo que ha recibido este galardón. Su contribución a la Ciencia incluye tanto análisis teóricos y observacionales sobre la atmósfera del Sol y de las estrellas, como aplicaciones tecnológicas que resultaron decisivas en la exploración del espacio: programas Mariner, Viking y Pioneer. Actualmente, Guido Münch reside en Tenerife, atraído por el clima

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  • Guido Münch. Crédito: Alchetron.
    The astronomer Guido Münch, a great friend of the IAC, has died

    Professor Guido Münch was the first astronomer to receive the Principe de Asturias Prize for Scientific and Technical Investigation in 1989 for which he was proposed by the IAC. His contributions to science included both theoretical and observational analysis of the atmosphere of the Sun and of the stars, as well as technolgical contributions which were important for the space exploration programmes Mariner, Viking, and Pioneer. Guido Münch lived for several years (1992-1996) in Tenerife, attracted by the IAC, and its observatories, and he attended conferences such as that held in La Palma

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