{"id":27906,"date":"2021-05-26T10:06:22","date_gmt":"2021-05-26T08:06:22","guid":{"rendered":"https:\/\/karmaka.de\/?p=27906"},"modified":"2021-06-15T17:19:03","modified_gmt":"2021-06-15T15:19:03","slug":"the-brittle-boulders-of-dwarf-planet-ceres","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=27906","title":{"rendered":"The brittle boulders of dwarf planet Ceres<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Stefan Schr\u00f6der, Uri Carsenty, Ernst Hauber, Carol Raymond, Christopher Russell<\/p>\n\n\n\n<p>Accepted by the Planetary Science Journal<\/p>\n\n\n\n<p><a href=\"https:\/\/arxiv.org\/pdf\/2105.11841.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p>Update (15 June 2021): The Planetary Science Journal, Volume 2, Number 3<br><a href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/PSJ\/abfe66\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/PSJ\/abfe66\/pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;We mapped all boulders larger than 105 m on the surface of dwarf planet Ceres using images of the Dawn framing camera acquired in the Low Altitude Mapping Orbit (LAMO). We find that boulders on Ceres are more numerous towards high latitudes and have a maximum lifetime of 150\u00b150 Ma, based on crater counts. These characteristics are distinctly different from those of boulders on asteroid (4) Vesta, an earlier target of Dawn, which implies that Ceres boulders are mechanically weaker. Clues to their properties can be found in the composition of Ceres&#8217; complex crust, which is rich in phyllosilicates and salts. As water ice is though to be present only meters below the surface, we suggest that boulders also harbor ice. Furthermore, the boulder size-frequency distribution is best fit by a Weibull distribution rather than the customary power law, just like for Vesta boulders. This finding is robust in light of possible types of size measurement error.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Stefan Schr\u00f6der, Uri Carsenty, Ernst Hauber, Carol Raymond, Christopher Russell Accepted by the Planetary Science Journal PDF (OPEN ACCESS) Update (15 June 2021): The Planetary Science Journal, Volume 2, Number 3LINK (OPEN ACCESS)PDF (OPEN ACCESS)&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[167,1184],"tags":[2058,3273,1868,2474,330,2018],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/27906"}],"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=27906"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/27906\/revisions"}],"predecessor-version":[{"id":28078,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/27906\/revisions\/28078"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}