{"id":6705,"date":"2017-03-09T18:21:39","date_gmt":"2017-03-09T21:21:39","guid":{"rendered":"https:\/\/blog.mindthegraph.com\/?p=6705"},"modified":"2022-10-18T08:10:40","modified_gmt":"2022-10-18T11:10:40","slug":"stars-family-tree","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/da\/stjerner-familietrae\/","title":{"rendered":"Lad os tale om stjerner, der har et stamtr\u00e6"},"content":{"rendered":"<p>Hvad er et stamtr\u00e6?<\/p>\n<p>Inden for videnskaben har stamtr\u00e6er v\u00e6ret meget brugt af biologer, genetikere, \u00f8kologer osv. til at pr\u00e6sentere for\u00e6ldreforbindelsen mellem individer p\u00e5 en mere visuel m\u00e5de. Et stamtr\u00e6 kan baseres p\u00e5 stort set enhver egenskab, som forskeren \u00f8nsker. Men i dag er DNA det mest anvendte kendetegn.<\/p>\n<p>N\u00e5r vi t\u00e6nker p\u00e5 DNA, t\u00e6nker vi p\u00e5 dyr, planter, bakterier, svampe og andre grupper, som er ret velkendte inden for videnskaben. Men hvad nu, hvis andre ting ogs\u00e5 kunne have DNA? Lad os sige, at stjerner ogs\u00e5 kunne analyseres ud fra deres DNA og endda f\u00e5 deres eget stamtr\u00e6.<\/p>\n<p>Denne diskussion er startet med to forskere: en astronom og en biolog. Astronomen, <a href=\"https:\/\/academic.oup.com\/mnras\/article\/2966869\/Cosmic\">\u00a0Dr. Paula Jofr\u00e9 fra University of Cambridge<\/a>fik den fantastiske id\u00e9 at analysere stjerner p\u00e5 samme m\u00e5de, som biologer g\u00f8r med dyrearter, og bygge M\u00e6lkevejsstjernernes stamtr\u00e6.<\/p>\n<p><iframe loading=\"lazy\" title=\"Astronomer har lavet et stamtr\u00e6 for stjernerne i vores galakse\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/HZq1dLuhjMg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p>Dr. Paula Jofr\u00e9 og hendes team udvalgte 22 stjerner (inklusive solen) og studerede de kemikalier, de er lavet af, deres alder og deres bev\u00e6gelse. Da alt dette var indsamlet, opdagede de tre hovedgrene, som stjernerne kunne opdeles i.<\/p>\n<p>Men hvad har DNA med alt dette at g\u00f8re?<\/p>\n<p>Stjerner, der er f\u00f8dt i den samme gassky, har den samme sammens\u00e6tning. Denne sammens\u00e6tning kaldes \"stellar DNA\". Da nogle af de analyserede stjerner ikke havde stjerne-DNA svarende til de tre grene, der blev opdaget, er det muligt, at nogle af stjernerne kom fra en anden galakse. Disse stjerner kan v\u00e6re blevet absorberet af M\u00e6lkevejen og har ikke s\u00f8skendestjerner.<\/p>\n<p><a href=\"https:\/\/academic.oup.com\/mnras\/article\/2966869\/Cosmic\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-6714 size-full\" src=\"https:\/\/blog.mindthegraph.com\/wp-content\/uploads\/2017\/03\/preview-1424544235.jpg\" alt=\"Lad os tale om stjerner, der har et stamtr\u00e6\" width=\"719\" height=\"464\" srcset=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2017\/03\/preview-1424544235.jpg 719w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2017\/03\/preview-1424544235-300x194.jpg 300w\" sizes=\"(max-width: 719px) 100vw, 719px\" \/><\/a><\/p>\n<p>Det er selvf\u00f8lgelig kun en fornemmelse. Is\u00e6r hvis vi tager i betragtning, at Dr. Paula Jofr\u00e9 kun analyserede 22 stjerner ud af de 100 milliarder stjerner, der findes i vores galakse. S\u00e5 ja, yderligere forskning er p\u00e5 sin plads, f\u00f8r man begynder at komme med antagelser.<\/p>\n<p>Men det budskab, vi f\u00e5r fra denne forskning, er klart og tydeligt: V\u00e6r ikke bange for at l\u00e6re fra andre studieretninger. M\u00e5ske kan l\u00f8sningen p\u00e5 dine problemer eller bare en bedre m\u00e5de at se tingene p\u00e5 findes lige ved siden af dig. Eller i Dr. Paula Jofr\u00e9s tilf\u00e6lde, lige i den n\u00e6ste universitetsafdeling.<\/p>\n<p><a href=\"https:\/\/blog.mindthegraph.com\/scientific-data\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-5826\" src=\"https:\/\/blog.mindthegraph.com\/wp-content\/uploads\/2016\/06\/i-love-science.png\" alt=\"Lad os tale om stjerner, der har et stamtr\u00e6\" width=\"327\" height=\"131\" srcset=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2016\/06\/i-love-science.png 1500w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2016\/06\/i-love-science-300x120.png 300w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2016\/06\/i-love-science-1024x410.png 1024w\" sizes=\"(max-width: 327px) 100vw, 327px\" \/><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Hvad er et stamtr\u00e6? Inden for videnskaben har stamtr\u00e6er v\u00e6ret meget brugt af biologer, genetikere, \u00f8kologer osv. til at pr\u00e6sentere for\u00e6ldreforbindelsen mellem individer p\u00e5 en mere visuel m\u00e5de. Et stamtr\u00e6 kan baseres p\u00e5 stort set enhver egenskab, som forskeren \u00f8nsker. Men i dag er DNA det mest anvendte kendetegn. N\u00e5r vi t\u00e6nker [...]<\/p>","protected":false},"author":4,"featured_media":6714,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":[],"categories":[959,28],"tags":[554],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Let&#039;s talk about stars having a family tree - Mind the Graph Blog<\/title>\n<meta name=\"description\" content=\"What if other things could have DNA too? Let&#039;s say stars could also be analyzed by their DNA and even get a family tree of their own.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mindthegraph.com\/blog\/da\/stjerner-familietrae\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Let&#039;s talk about stars having a family tree - Mind the Graph Blog\" \/>\n<meta property=\"og:description\" content=\"What if other things could have DNA too? 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He has a Ph.D. and solid scientific background in Psychopharmacology and experience as a Guest Researcher at the Max Planck Institute of Psychiatry (Germany) and Researcher in D'Or Institute for Research and Education (IDOR, Brazil). Fabricio holds over 2500 citations in Google Scholar. He has 10 years of experience in small innovative businesses, with relevant experience in product design and innovation management. Connect with him on LinkedIn - Fabricio Pamplona.","sameAs":["http:\/\/mindthegraph.com","https:\/\/www.linkedin.com\/in\/fabriciopamplona"],"url":"https:\/\/mindthegraph.com\/blog\/da\/author\/fabricio\/"}]}},"_links":{"self":[{"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/posts\/6705"}],"collection":[{"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/comments?post=6705"}],"version-history":[{"count":10,"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/posts\/6705\/revisions"}],"predecessor-version":[{"id":6716,"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/posts\/6705\/revisions\/6716"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/media\/6714"}],"wp:attachment":[{"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/media?parent=6705"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/categories?post=6705"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mindthegraph.com\/blog\/da\/wp-json\/wp\/v2\/tags?post=6705"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}