{"id":35648,"date":"2024-03-14T17:01:29","date_gmt":"2024-03-14T16:01:29","guid":{"rendered":"https:\/\/karmaka.de\/?p=35648"},"modified":"2024-10-17T00:42:29","modified_gmt":"2024-10-16T22:42:29","slug":"young-asteroid-families-as-the-primary-source-of-meteorites","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=35648","title":{"rendered":"Young asteroid families as the primary source of meteorites<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>M. Bro\u017e, P. Vernazza, M. Marsset, F.E. DeMeo, R.P. Binzel, D. Vokrouhlick\u00fd, D. Nesvorn\u00fd<\/p>\n\n\n\n<p><a href=\"https:\/\/arxiv.org\/pdf\/2403.08552.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p>Update (16 October 2024): Nature, Volume 634, pages 566\u2013571 <a href=\"https:\/\/www.nature.com\/articles\/s41586-024-08006-7\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Understanding the origin of bright shooting stars and their meteorite samples is among the most ancient astronomy-related questions that at larger scales has human consequences [1-3]. As of today, only ~6% of meteorite falls have been firmly linked to their sources (Moon, Mars, and asteroid (4) Vesta [4-6]). Here, we show that ~70% of meteorites originate from three recent breakups of D &gt; 30 km asteroids that occurred 5.8, 7.5 and less than ~40 million years ago. These breakups, including the well-known Karin family [7], took place in the prominent yet old Koronis and Massalia families and are at the origin of the dominance of H and L ordinary chondrites among meteorite falls. These young families distinguish themselves amidst all main belt asteroids by having a uniquely high abundance of small fragments. Their size-frequency distribution remains steep for a few tens of millions of years, exceeding temporarily the production of metre-sized fragments by the largest old asteroid families (e.g., Flora, Vesta). Supporting evidence includes the existence of associated dust bands [8-10], the cosmic-ray exposure ages of H-chondrite meteorites [11,12], or the distribution of pre-atmospheric orbits of meteorites [13-15].<\/p>\n","protected":false},"excerpt":{"rendered":"<p>M. Bro\u017e, P. Vernazza, M. Marsset, F.E. DeMeo, R.P. Binzel, D. Vokrouhlick\u00fd, D. Nesvorn\u00fd PDF (OPEN ACCESS) Update (16 October 2024): Nature, Volume 634, pages 566\u2013571 LINK &#8220;Understanding the origin of bright shooting stars and&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[77,69,6,23,7,337],"tags":[1854,1403,2904,6630,6631,6632,490,6629,3548,3657],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/35648"}],"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=35648"}],"version-history":[{"count":3,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/35648\/revisions"}],"predecessor-version":[{"id":36821,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/35648\/revisions\/36821"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=35648"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=35648"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=35648"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}