[et_pb_section fb_built=”1″ admin_label=”Section” _builder_version=”4.16″ _module_preset=”default” background_image=”https:\/\/www.ieec.cat\/wp-content\/uploads\/2022\/02\/slider-comunicacio.jpg” max_height=”130px” custom_padding=”0px||0px||false|false” da_disable_devices=”off|off|off” global_colors_info=”{}” da_is_popup=”off” da_exit_intent=”off” da_has_close=”on” da_alt_close=”off” da_dark_close=”off” da_not_modal=”on” da_is_singular=”off” da_with_loader=”off” da_has_shadow=”on”][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”Section” _builder_version=”4.16″ _module_preset=”default” custom_padding=”24px||11px|||” da_disable_devices=”off|off|off” global_colors_info=”{}” da_is_popup=”off” da_exit_intent=”off” da_has_close=”on” da_alt_close=”off” da_dark_close=”off” da_not_modal=”on” da_is_singular=”off” da_with_loader=”off” da_has_shadow=”on”][et_pb_row _builder_version=”4.16″ _module_preset=”default” custom_padding=”||||false|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text admin_label=”Unitats de recerca” module_class=”ieec-orgs” _builder_version=”4.27.4″ _dynamic_attributes=”content” _module_preset=”default” text_font=”|700||on|||||” text_font_size=”16px” header_font=”|700|||||||” custom_margin=”||10px||false|false” header_font_size_tablet=”28px” header_font_size_phone=”26px” header_font_size_last_edited=”on|phone” global_colors_info=”{}”]@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoiY3VzdG9tX21ldGFfb3JnYW5pemFjaW9uZXMiLCJzZXR0aW5ncyI6eyJiZWZvcmUiOiIiLCJhZnRlciI6IiIsImVuYWJsZV9odG1sIjoib2ZmIn19@[\/et_pb_text][et_pb_post_title author=”off” categories=”off” comments=”off” featured_image=”off” admin_label=”T\u00edtol i data” module_class=”ieec-title” _builder_version=”4.27.4″ _module_preset=”default” title_font=”Cairo|300|||||||” title_font_size=”40px” meta_font=”||on||||||” meta_font_size=”16px” title_font_size_tablet=”35px” title_font_size_phone=”30px” title_font_size_last_edited=”on|desktop” global_colors_info=”{}”][\/et_pb_post_title][et_pb_text admin_label=”Subt\u00edtols” module_class=”ieec-summary” _builder_version=”4.27.4″ _module_preset=”default” text_font=”Source Sans Pro||on||||||” text_font_size=”24px” text_line_height=”1.1em” hover_enabled=”0″ text_font_size_tablet=”22px” text_font_size_phone=”20px” text_font_size_last_edited=”on|phone” global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n
[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_2,1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_post_title title=”off” meta=”off” module_class=”ieec-img-container” _builder_version=”4.27.2″ _module_preset=”default” custom_margin=”||0px||false|false” border_width_top=”10px” border_color_top=”#406fda” global_colors_info=”{}”][\/et_pb_post_title][et_pb_text module_class=”ieec-img-footer” _builder_version=”4.27.4″ _module_preset=”default” text_font=”||||||||” text_font_size=”15px” text_line_height=”1.1em” background_color=”rgba(64,111,218,0.15)” custom_margin=”0px||||false|false” custom_padding=”30px|20px|30px|20px|true|true” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n
Image extracted from the Euclid Flagship simulations catalogue. Each dot represents a galaxy: blue points mark galaxies at the centers of dark matter clumps, while red points denote satellites within them. Collectively, they trace the large-scale mass distribution of the Universe, forming clumps, filaments, and voids. Jorge Carretero & Pau Tallada (Port d’Informaci\u00f3 Cient\u00edfica) \/ Euclid Consortium)<\/strong>. Image processed with the software Splotch.\u200b [\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” link_font=”|700|||on||||” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n Launched in July 2023, the <\/span>Euclid<\/span><\/a> mission of the <\/span>European Space Agency<\/span><\/a> (ESA) is currently in space scanning a third of the sky over a 6-year-period. Today, the <\/span>largest synthetic galaxy catalogue ever built has been published<\/b> by the Euclid Consortium, featuring simulations of more than 3.4 billion galaxies to match Euclid\u2019s sharp eyes.\u00a0<\/span><\/p>\n The <\/span>Institute of Space Studies of Catalonia<\/span><\/a> (IEEC \u2014 Institut d\u2019Estudis Espacials de Catalunya) has had a key role in this development. IEEC researchers at the <\/span>Institute of Space Sciences<\/span><\/a> (ICE-CSIC), as well as the Port d\u2019Informaci\u00f3 Cient\u00edfica (PIC), have led the international team that prepared the catalogue, which is available on the <\/span>CosmoHub<\/span><\/a> platform.<\/span><\/p>\n This synthetic catalogue, known as the \u2018Flagship 2 galaxy mock\u2019, aims to reproduce what the 1.2-m-diameter Euclid telescope will be able to see and capture, mimicking the actual Universe. Due to their very large volume, these simulations allow astronomers to portray very distant galaxies that emitted their light more than 10 billion light years away.<\/span><\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” link_font=”|700|||on||||” hover_enabled=”0″ locked=”off” global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n Reproducing the Universe with computational simulations before obtaining the final 3D map will help us understand what Euclid sees and will allow scientists to <\/span>study the origin of the \u2018cosmic web\u2019<\/b>\u2014the large-scale structure of the Universe\u2014, test the standard cosmological model and help us to unravel the nature of dark energy and dark matter.<\/span><\/p>\n \u201cThis is a huge step for the scientific community, since it is now accessible for everyone. In addition, it can have many different scientific applications beyond the context of the Euclid mission,\u201d says Jorge Carretero, researcher at the Port d\u2019Informaci\u00f3 Cient\u00edfica (PIC) and the Research Centre for Energy, Environment and Technology<\/a> (CIEMAT). \u201cIn particular,\u00a0 it can be used as a reference simulation for other astronomical surveys and their combinations,\u201d he adds. <\/span><\/span><\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text module_class=”section-title” _builder_version=”4.27.4″ _module_preset=”default” header_2_font=”|700|||||||” header_2_font_size=”25px” hover_enabled=”0″ header_2_font_size_tablet=”23px” header_2_font_size_phone=”23px” header_2_font_size_last_edited=”on|phone” global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” link_font=”|700|||on||||” hover_enabled=”0″ locked=”off” global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n The team used computational models, produced by the <\/span>University of Zurich<\/span><\/a>, that simulate the motion of 4 trillion particles under the influence of their mutual gravitational interactions. Of those 4 trillion, 16 billion gravitationally bound objects, called haloes, were identified located within a distance of 18.6 billion light years from Earth. Haloes were populated with the galaxies that Euclid is expected to observe, calibrating different parameters against the current observed distribution of galaxies.\u00a0<\/span><\/p>\n Overall, <\/span>this catalogue features 3.4 billions of galaxies and more than 400 modelled galaxy properties<\/b>, including the galaxy brightness, positions, velocities and shapes. The resulting simulation reproduces with exquisite precision the emergence of the large-scale structure of the Universe\u2014galaxies and galaxy clusters within the network of the cosmic web that comprises both dark and visible matter.\u00a0<\/span><\/p>\n \u201cThe main value of the Flagship catalogue is its comprehensive set of properties that have been derived per galaxy. We have checked that many of these properties closely resemble what we see in observational data, but we are just starting to explore how far we can go in terms of predicting properties future galaxy surveys will observe in great detail,\u201d points out Pablo Fosalba, IEEC researcher at the ICE-CSIC.\u00a0<\/span><\/p>\n The galaxy catalogue is produced and analysed using specialised hardware, a Hadoop big data platform located at PIC<\/span>. <\/span>Generating a catalogue of these characteristics entails both a scientific and a technical challenge, since it includes the development of computation and statistical strategies, as well as incorporating our up-to-date knowledge of galaxy formation and evolution, and its interplay with the dark components of the Universe.<\/span><\/p>\n The Euclid Consortium will be focusing on producing new simulation datasets, improving the catalogue resolution and aiming to reproduce the deep fields that Euclid will observe. \u201cThe team will work on improving the assigned properties to be more consistent with the observations and to keep the catalogue updated considering the upcoming new observations,\u201d points out Elizabeth Gonz\u00e1lez, researcher at PIC and the <\/span>Institut de F\u00edsica d\u2019Altes Energies<\/span><\/a> (IFAE).\u00a0<\/span><\/p>\n As observations from previous galaxy surveys, such as the Sloan Digital Sky Survey (SDSS) and the Hubble Space Telescope\u2019s Cosmic Evolution Survey (COSMOS) that have been used to calibrate the model\u2019s parameters used to assign galaxies to the haloes, <\/span>the Flagship mock galaxy catalogue will help develop strategies for the scientific exploitation of future galaxy surveys<\/b>. These simulations may have a further impact and outsmart the catalogue’s initial purpose, allowing scientists to test observational techniques in order to recover cosmological information or to carry out studies that connect the visible and the Universe’s dark components.<\/span><\/p>\n “The Euclid Flagship Simulations are of utmost importance for the success of the mission. They are used by the Euclid Consortium to validate the performance and quality of the Science Ground Segment End-to-End processing pipeline and to compare the scientific analysis of the Euclid data to cosmological models of dark matter and dark energy. These simulations successfully meet the precision and accuracy necessary to challenge cosmological models to the true dark universe”, concludes Yannick Mellier, Euclid Consortium lead and Institut d’Astrophysique de Paris (IAP) researcher.<\/span><\/p>\n The catalogue has been produced by the following institutions within the Euclid Consortium:\u00a0 the Institute of Space Sciences (ICE-CSIC), the Institute of Space Studies of Catalonia (IEEC), the Port d\u2019Informaci\u00f3 Cient\u00edfica (PIC) \u2015operated through a collaboration agreement between Research Centre for Energy, Environment and Technology (CIEMAT) and the Institut de F\u00edsica d\u2019Altes Energies (IFAE)\u2015, the University of Zurich, the Utrecht University, the Italian National Institute for Astrophysics (INAF), the French Alternative Energies and Atomic Energy Commission (CEA), the University College London (UCL) and the Institut d’Astrophysique de Paris (IAP).<\/span><\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.16″ _module_preset=”default” custom_margin=”30px||||false|false” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_divider color=”#406fda” _builder_version=”4.16″ _module_preset=”default” custom_margin=”||10px||false|false” global_colors_info=”{}”][\/et_pb_divider][et_pb_text admin_label=”M\u00e9s informaci\u00f3” module_class=”ieec-sub-title” _builder_version=”4.27.4″ _module_preset=”default” text_font=”Cairo|700|||||||” text_text_color=”#406fda” text_font_size=”20px” custom_margin=”||10px||false|false” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n More information<\/p>\n [\/et_pb_text][et_pb_text module_class=”ieec-sub-text” _builder_version=”4.27.4″ _module_preset=”default” text_font_size=”16px” text_line_height=”1.1em” link_font=”|700|||on||||” custom_margin=”20px||||false|false” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n This research is presented in a paper entitled \u201c<\/span>Euclid. V. The Flagship galaxy mock catalogue: a comprehensive simulation for the Euclid mission<\/span>\u201d, by <\/span>Castander, F., Fosalba, P.,<\/span> et al.<\/span><\/i>, appeared in the journal Astronomy & Astrophysics, <\/span><\/span><\/a>697, A5. https:\/\/doi.org\/10.1051\/0004-6361\/202450853<\/a><\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.16″ _module_preset=”default” custom_margin=”||||false|false” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_divider color=”#406fda” _builder_version=”4.16″ _module_preset=”default” custom_margin=”||10px||false|false” global_colors_info=”{}”][\/et_pb_divider][et_pb_text admin_label=”Enlla\u00e7os” module_class=”ieec-sub-title” _builder_version=”4.27.4″ _module_preset=”default” text_font=”Cairo|700|||||||” text_text_color=”#406fda” text_font_size=”20px” custom_margin=”||10px||false|false” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n Links<\/p>\n [\/et_pb_text][et_pb_text module_class=”ieec-sub-text” _builder_version=”4.27.4″ _module_preset=”default” text_font_size=”16px” text_line_height=”1.1em” link_font=”|700|||on|||#1a1140|” link_text_color=”#1a1140″ link_line_height=”1.4em” custom_margin=”20px||||false|false” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n <\/a><\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.16″ _module_preset=”default” custom_margin=”||||false|false” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_divider color=”#406fda” _builder_version=”4.16″ _module_preset=”default” custom_margin=”||10px||false|false” global_colors_info=”{}”][\/et_pb_divider][et_pb_text admin_label=”Contactes” module_class=”ieec-sub-title” _builder_version=”4.27.4″ _module_preset=”default” text_font=”Cairo|700|||||||” text_text_color=”#406fda” text_font_size=”20px” custom_margin=”||10px||false|false” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n Contacts<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”2_5,3_5″ admin_label=”Row” _builder_version=”4.16″ _module_preset=”default” custom_margin=”0px||||false|false” custom_padding=”0px||||false|false” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”2_5″ _builder_version=”4.16″ _module_preset=”default” custom_padding=”|||20px|false|false” border_width_left=”1px” border_color_left=”#406fda” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_font_size=”16px” text_line_height=”1.1em” link_font=”|700|||on|||#1a1140|” link_text_color=”#1a1140″ link_line_height=”1.4em” header_4_font=”|700|||||||” header_4_text_color=”#1a1140″ custom_margin=”||||false|false” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n Castelldefels, Barcelona [\/et_pb_text][\/et_pb_column][et_pb_column type=”3_5″ _builder_version=”4.16″ _module_preset=”default” custom_padding=”|||20px|false|false” border_width_left=”1px” border_color_left=”#406fda” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” text_font_size=”16px” text_line_height=”1em” link_font=”|700|||on||||” link_text_color=”#1a1140″ header_4_font=”|700|||||||” header_4_text_color=”#1a1140″ hover_enabled=”0″ global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n Institute of Space Studies of Catalonia (IEEC) [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row module_id=”ieec-about” module_class=”about-ieec” _builder_version=”4.27.4″ _module_preset=”default” background_color=”rgba(64,111,218,0.15)” global_module=”17324″ global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” custom_padding=”20px|50px|20px|50px|true|true” global_colors_info=”{}”][et_pb_text admin_label=”Sobre l’IEEC” _builder_version=”4.16″ _module_preset=”default” header_2_font=”|700|||||||” header_2_font_size=”25px” custom_margin=”||10px||false|false” header_2_font_size_tablet=”23px” header_2_font_size_phone=”23px” header_2_font_size_last_edited=”on|phone” locked=”off” global_colors_info=”{}”]<\/p>\n [\/et_pb_text][et_pb_text admin_label=”Text” _builder_version=”4.16″ _module_preset=”default” text_font=”||on||||||” link_font=”|700|||on||||” locked=”off” global_colors_info=”{}”]<\/p>\n The Institute of Space Studies of Catalonia (IEEC \u2014 Institut d\u2019Estudis Espacials de Catalunya) promotes and coordinates space research and technology development in Catalonia for the benefit of society. IEEC fosters collaborations both locally and worldwide and is an efficient agent of knowledge, innovation and technology transfer. As a result of more than 25 years of high-quality research, done in collaboration with major international organisations, IEEC ranks among the best international research centres, focusing on areas such as: astrophysics, cosmology, planetary science, and Earth Observation. IEEC\u2019s engineering division develops instrumentation for ground- and space-based projects, and has extensive experience in working with private or public organisations from the aerospace and other innovation sectors.<\/p>\n The IEEC is a non-profit public sector foundation that was established in February 1996. It has a Board of Trustees composed of the Generalitat de Catalunya, Universitat de Barcelona (UB), Universitat Aut\u00f2noma de Barcelona (UAB), Universitat Polit\u00e8cnica de Catalunya \u00b7 BarcelonaTech (UPC), and the Spanish Research Council (CSIC). The IEEC is also a CERCA centre.<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":" A team of 11 institutions within the Euclid Consortium, led by IEEC researchers at the Institute of Space Sciences (ICE-CSIC) and the Port d\u2019Informaci\u00f3 Cient\u00edfica (PIC), have developed it.<\/p>\n","protected":false},"author":5,"featured_media":39426,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"2880","footnotes":""},"categories":[111,74,98],"tags":[],"class_list":["post-39435","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-highlighted-news-small","category-news","category-science"],"yoast_head":"\n
<\/span><\/p>\nA flagship catalogue in the era of large galaxy surveys<\/h2>\n
\n
IEEC Communication Office<\/h4>\n
E-mail: comunicacio@ieec.cat<\/a><\/p>\nLead Researcher at the IEEC<\/h4>\n
Pablo Fosalba<\/h4>\n
Institute of Space Sciences (ICE-CSIC)
E-mail: fosalba@ieec.cat,<\/a> fosalba@ice.csic.es<\/a><\/p>\nAbout the IEEC<\/h2>\n