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Measuring galaxy sizes is essential for understanding how they were formed and evolved across time. However, traditional methods based on l ight concentration or isophotal densities often lack a clear physical meaning. A recent study from Trujillo+20 explores a more physically motivated definition: the radius R 1, where the stellar surface density falls to 1 solar masses per parsec square —roughly the threshold for gas to form stars in galaxies like the Milky Way. In this work, Arjona-Gálvez+25 uses over 1,000 galaxies from several state-of-the-art cosmological simulations (AURIGA, HESTIAAdvertised on -
El Museo de la Ciencia y el Cosmos , del Organismo Autónomo de Museos y Centros del Cabildo de Tenerife, acogerá el próximo jueves 23 de octubre a las 16:30 horas una nueva cita del ciclo de divulgación científica “Del cielo a la tesis”, organizado en colaboración con la Universidad de La Laguna (ULL) y el Instituto de Astrofísica de Canarias (IAC). Este ciclo, impulsado por estudiantes de doctorado del IAC, tiene como objetivo acercar a la ciudadanía los temas más actuales de la investigación astrofísica contados en primera persona por quienes los desarrollan. Cada sesión, de carácterAdvertised on -
From 20 to 23 May, the Instituto de Astrofísica de Canarias (IAC) hosted the scientific meeting of the GATOS (Galaxy Activity, Torus, and Outflow Survey) collaboration, a meeting that brought together 30 leading international researchers to advance our knowledge of one of the most enigmatic phenomena in the universe: active galactic nuclei. GATOS is an international collaboration of 60 experts from institutions around the world, united by the common goal of deciphering the complex mechanisms that govern active galactic nuclei. The centres of galaxies harbour supermassive black holes thatAdvertised on