{"id":9655,"date":"2014-05-16T11:52:37","date_gmt":"2014-05-16T18:52:37","guid":{"rendered":"http:\/\/planets.ucla.edu\/?p=9655"},"modified":"2021-01-18T01:34:56","modified_gmt":"2021-01-18T09:34:56","slug":"053014lyra","status":"publish","type":"post","link":"http:\/\/planets.ucla.edu\/?p=9655","title":{"rendered":"May 30, 2014: Evolution of circumstellar disks and planet formation"},"content":{"rendered":"<p>During the first million years of evolution, nascent planetary<br \/>\nsystems are embedded in dense disk\u00ad-shaped clouds of gas. These<br \/>\ncircumstellar disks are home to a myriad of hydrodynamical processes,<br \/>\nwhich bring about turbulence and the emergence of viscous\u00ad-like behavior,<br \/>\nenabling accretion of gas onto the protostar. Meanwhile, micron\u00adsize dust<br \/>\ngrains embedded in the disk are growing through coagulation onto pebbles<br \/>\nand rocks. Turbulence has a positive effect on these small solids,<br \/>\nconcentrating them into transient high pressure regions for long enough to<br \/>\nachieve gravitational collapse into km\u00ad-sized bodies, forming the first<br \/>\nplanetesimals. Giant storm systems in the disk, similar to Jupiter&#8217;s Great<br \/>\nRed Spot, may exist in quiescent zones of the disk. These are even more<br \/>\nprone to collecting solid material, producing the first terrestrial<br \/>\nplanets and cores of giant planets. In this talk I will discuss the state<br \/>\nof the art and recent advances in the field of planet formation, as well<br \/>\nas pressing problems such as the asymmetries observed in ALMA images of<br \/>\ncircumstellar disks, and how to interpret them.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>During the first million years of evolution, nascent planetary systems are embedded in dense disk\u00ad-shaped clouds of gas. These circumstellar disks are home to a myriad of hydrodynamical processes, which bring about turbulence and the emergence of viscous\u00ad-like behavior, enabling accretion of gas onto the protostar. Meanwhile, micron\u00adsize dust grains embedded in the disk are &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/planets.ucla.edu\/?p=9655\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;May 30, 2014: Evolution of circumstellar disks and planet formation&#8221;<\/span><\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[256],"tags":[],"class_list":["post-9655","post","type-post","status-publish","format-standard","hentry","category-colloquia"],"_links":{"self":[{"href":"http:\/\/planets.ucla.edu\/index.php?rest_route=\/wp\/v2\/posts\/9655","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/planets.ucla.edu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/planets.ucla.edu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/planets.ucla.edu\/index.php?rest_route=\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/planets.ucla.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9655"}],"version-history":[{"count":1,"href":"http:\/\/planets.ucla.edu\/index.php?rest_route=\/wp\/v2\/posts\/9655\/revisions"}],"predecessor-version":[{"id":9656,"href":"http:\/\/planets.ucla.edu\/index.php?rest_route=\/wp\/v2\/posts\/9655\/revisions\/9656"}],"wp:attachment":[{"href":"http:\/\/planets.ucla.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/planets.ucla.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9655"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/planets.ucla.edu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}