{"id":120,"date":"2021-02-02T23:48:14","date_gmt":"2021-02-02T22:48:14","guid":{"rendered":"https:\/\/www.oa-roma.inaf.it\/caesar\/?page_id=120"},"modified":"2024-02-26T14:38:53","modified_gmt":"2024-02-26T13:38:53","slug":"our-science","status":"publish","type":"page","link":"https:\/\/www.oa-roma.inaf.it\/caesar\/our-science\/","title":{"rendered":"Our Science"},"content":{"rendered":"\n<p>Our science revolves around exploring the cosmic epoch from the formation of the first stars and galaxies, known as <strong>Cosmic Dawn<\/strong>, to the conclusion of <strong>cosmic reionization<\/strong>. This is a period (roughly covering the first Gyrs of cosmic history, or z &gt; 6) of extraordinary interest, as it maps when the <strong>first stars and galaxies formed<\/strong> after the Big Bang and produced the photons that ionized the neutral-hydrogen InterGalactic Medium (IGM), triggering the last phase-change of the Universe.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"780\" src=\"https:\/\/www.oa-roma.inaf.it\/caesar\/wp-content\/uploads\/sites\/17\/2021\/01\/BigBang-1024x780.png\" alt=\"\" class=\"wp-image-68\" style=\"width:639px;height:487px\" srcset=\"https:\/\/www.oa-roma.inaf.it\/caesar\/wp-content\/uploads\/sites\/17\/2021\/01\/BigBang-1024x780.png 1024w, https:\/\/www.oa-roma.inaf.it\/caesar\/wp-content\/uploads\/sites\/17\/2021\/01\/BigBang-300x228.png 300w, https:\/\/www.oa-roma.inaf.it\/caesar\/wp-content\/uploads\/sites\/17\/2021\/01\/BigBang-768x585.png 768w, https:\/\/www.oa-roma.inaf.it\/caesar\/wp-content\/uploads\/sites\/17\/2021\/01\/BigBang.png 1144w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/figure>\n\n\n\n<p>Despite recent strides, our comprehension of this epoch remains limited. <\/p>\n\n\n\n<p>The <strong>physical nature and evolution of early cosmic sources<\/strong> remain ambiguous. Theoretical predictions<strong> <\/strong>suggest that the first stars were significantly more massive than contemporary ones, playing a crucial role in illuminating the nascent universe and initiating reionization. However, understanding the transition from Pop III to Pop II\/I stellar populations necessitates a comprehensive grasp of the interplay between molecular, metal, and dust content within star-forming regions.<\/p>\n\n\n\n<p>Unfortunately, the <strong>origin and properties of interstellar dust<\/strong> at z &gt; 6 are also still largely unknown, which adds further uncertainty to the understanding of star formation, as dust is a key coolant of the interstellar medium (ISM) and to the predicted observational properties of primeval galaxies. Dust evolution has recently started to be implemented in only a few numerical models, including our own <strong>dustyGADGET<\/strong>. Despite these progresses, current simulations still lack the capability to couple molecule, metal and dust evolution with the efficiency of star formation and the emerging stellar mass spectrum.<\/p>\n\n\n\n<p>Observational constraints are hindered by the scarcity of galaxy samples and uncertainties in interpreting data, particularly in the rest-frame UV. While observations suggest young and metal-poor stars in these galaxies, recent findings indicate early dust enrichment, challenging existing models.<\/p>\n\n\n\n<p>The James Webb Space Telescope (JWST) promises a revolutionary shift, offering unprecedented sensitivity and resolution to unravel the mysteries of primeval galaxies. <\/p>\n\n\n\n<p>Our science focuses on elucidating the physical mechanisms driving galaxy evolution during this critical period. Leveraging our expertise and involvement in key observational campaigns, <strong>our team aims to make transformative contributions to our understanding of this unique phase of cosmic history.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Our science revolves around exploring the cosmic epoch from the formation of the first stars and galaxies, known as Cosmic Dawn, to the conclusion of cosmic reionization. This is a period (roughly covering the first Gyrs of cosmic history, or z &gt; 6) of extraordinary interest, as it maps when the first stars and galaxies &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.oa-roma.inaf.it\/caesar\/our-science\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Our Science&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-120","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.oa-roma.inaf.it\/caesar\/wp-json\/wp\/v2\/pages\/120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oa-roma.inaf.it\/caesar\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.oa-roma.inaf.it\/caesar\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.oa-roma.inaf.it\/caesar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oa-roma.inaf.it\/caesar\/wp-json\/wp\/v2\/comments?post=120"}],"version-history":[{"count":3,"href":"https:\/\/www.oa-roma.inaf.it\/caesar\/wp-json\/wp\/v2\/pages\/120\/revisions"}],"predecessor-version":[{"id":421,"href":"https:\/\/www.oa-roma.inaf.it\/caesar\/wp-json\/wp\/v2\/pages\/120\/revisions\/421"}],"wp:attachment":[{"href":"https:\/\/www.oa-roma.inaf.it\/caesar\/wp-json\/wp\/v2\/media?parent=120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}