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The cosmic evolution of the barred galaxy population provides key information about the secular evolution of galaxies and the settling of rotationally dominated discs. We study the bar fraction in the SMACSJ0723.37323 (SMACS0723) cluster of galaxies at z = 0.39 using the Early Release Observations obtained with the NIRCam instrument mounted on the JWST telescope. We visually inspected all cluster member galaxies using the images from the NIRCam F200W filter. We classified the galaxies into ellipticals and discs and determine the presence of a bar. The cluster member selection was based on a
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La XXXIV Canary Islands Winter School of Astrophysics, organizada por el Instituto de Astrofísica de Canarias (IAC) y la Universidad de La Laguna (ULL), tendrá lugar entre los días 8 y 15 de noviembre. En esta edición, cerca de 60 estudiantes de 15 países se reunirán para conocer los últimos avances en el campo de la evolución de galaxias, con el Grupo Local como punto de referencia. Durante una semana, el edificio IACTEC, en el Parque Científico y Tecnológico de Tenerife (La Laguna), acogerá a 60 estudiantes de máster, doctorado y postdoctorado para nutrirse sobre las novedades del panorama
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CaII Kgrains, i.e., intermittent, short-lived (about 1 minute), periodic (2-4 minutes), pointlike chromospheric brightenings, are considered to be the manifestations of acoustic waves propagating upward from the solar surface and developing into shocks in the chromosphere. After the simulations of Carlsson and Stein, we know that hot shocked gas moving upward interacting with the downflowing chromospheric gas (falling down after having been displaced upward by a previous shock) nicely reproduces the spectral features of the CaII K profiles observed in such grains, i.e., a narrowband emission
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