{"id":14666,"date":"2018-04-18T21:43:57","date_gmt":"2018-04-18T19:43:57","guid":{"rendered":"http:\/\/karmaka.de\/?p=14666"},"modified":"2018-04-18T21:45:07","modified_gmt":"2018-04-18T19:45:07","slug":"origin-of-phobos-and-deimos-by-the-impact-of-a-vesta-to-ceres-sized-body-with-mars","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=14666","title":{"rendered":"Origin of Phobos and Deimos by the impact of a Vesta-to-Ceres sized body with Mars<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"<p>Robin Canup and Julien Salmon<\/p>\n<p>Science Advances  18 Apr 2018:<br \/>\nVol. 4, no. 4, eaar6887<br \/>\nDOI: 10.1126\/sciadv.aar6887 <\/p>\n<p><a href=\"http:\/\/advances.sciencemag.org\/content\/4\/4\/eaar6887.full\" target=\"_blank\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br \/>\n<a href=\"http:\/\/advances.sciencemag.org\/content\/advances\/4\/4\/eaar6887.full.pdf\" target=\"_blank\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n<p>&#8220;It has been proposed that Mars\u2019 moons formed from a disk produced by a large impact with the planet. However, whether such an event could produce tiny Phobos and Deimos remains unclear. Using a hybrid N-body model of moon accumulation that includes a full treatment of moon-moon dynamical interactions, we first identify new constraints on the disk properties needed to produce Phobos and Deimos. We then simulate the impact formation of disks using smoothed particle hydrodynamics, including a novel approach that resolves the impact ejecta with order-of-magnitude finer mass resolution than existing methods. We find that forming Phobos-Deimos requires an oblique impact by a Vesta-to-Ceres sized object with ~10\u22123 times Mars\u2019 mass, a much less massive impactor than previously considered.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Robin Canup and Julien Salmon Science Advances 18 Apr 2018: Vol. 4, no. 4, eaar6887 DOI: 10.1126\/sciadv.aar6887 LINK (OPEN ACCESS) PDF (OPEN ACCESS) &#8220;It has been proposed that Mars\u2019 moons formed from a disk produced&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122,4114],"tags":[1450,1449,798],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/14666"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14666"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/14666\/revisions"}],"predecessor-version":[{"id":14668,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/14666\/revisions\/14668"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}