{"id":66665,"date":"2015-03-25T18:10:22","date_gmt":"2015-03-25T15:10:22","guid":{"rendered":"http:\/\/www.fyysika.ee\/?p=66665"},"modified":"2015-05-06T11:37:28","modified_gmt":"2015-05-06T08:37:28","slug":"kuidas-leida-eluks-sobilik-eksoplaneet","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=66665","title":{"rendered":"Kuidas leida eluks sobilik eksoplaneet?"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>K\u00f5ik on kuulnud eksoplaneetidest. K\u00f5ik kes teavad, mismoodi neid planeete otsitakse ja leitakse, kui palju neid meie galaktikas \u00fcle\u00fcldse olemas olla v\u00f5i kuidas neid uuritakse v\u00f5ivad allj\u00e4rgneva ka lugemata j\u00e4tta. Aga k\u00f5igile\u00a0teistele &#8230;<\/p>\n<div id=\"attachment_68074\" style=\"width: 310px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/exoplanet-zoom.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68074\" class=\"wp-image-68074 size-medium\" src=\"http:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/exoplanet-zoom-300x206.jpg\" alt=\"exoplanet-zoom\" width=\"300\" height=\"206\" srcset=\"https:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/exoplanet-zoom-300x206.jpg 300w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/exoplanet-zoom.jpg 825w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-68074\" class=\"wp-caption-text\">Fotomeetrilises meetodis eksoplaneetide avastamiseks m\u00f5\u00f5detakse t\u00e4htedelt heledust ning otsitakse sealt perioodilisi muutusi. Pange kindlasti t\u00e4hele &#8211; see pilt siin on kunstniku n\u00e4gemus, \u00fchegi teleskoobiga ei ole v\u00f5imalik midagi niisugust n\u00e4ha &#8230; teleskoopides on k\u00f5ik t\u00e4hed va P\u00e4ike t\u00e4pid. Foto: eso.org<\/p><\/div>\n<p>Eksoplaneetide avastamiseks kasutatakse allj\u00e4rgnevaid meetodeid:<\/p>\n<ul>\n<li>D\u00fcnaamiline\u00a0&#8211;\u00a0t\u00e4he radiaalkiiruse perioodilised muutused;<\/li>\n<li>Fotomeetriline &#8211; perioodilised t\u00e4hevarjutused. Sellel meetodil on\u00a0<a href=\"http:\/\/kepler.nasa.gov\" target=\"_blank\">NASA satelliit Kepler <\/a>on leidnud 1019 planeeti, \u00fcle 3100 kandidaadi ootab oma planeedi staatuse kinnitamise j\u00e4rge. Vt ka ajakirja The Physics Teacher <a href=\"http:\/\/scitation.aip.org\/content\/aapt\/journal\/tpt\/53\/4\/10.1119\/1.4914556?TRACK=RSS\">asjakohast artiklit<\/a>;<\/li>\n<li>Gravitatsiooniliste mikrol\u00e4\u00e4tsede heleduse variatsioonide uurimine;<\/li>\n<li>Otsekujutised (vaata teine pilt).<\/li>\n<\/ul>\n<p>F\u00fc\u00fcsikap\u00e4evadel pidas Laurits Leedj\u00e4rv (Tartu Observatoorium) loengu teemal &#8220;P\u00e4ikesevarjutusest t\u00e4hevarjutuseni ehk 20 aastat eksoplaneete.&#8221; ning r\u00e4\u00e4kis k\u00f5igist neist meetoditest. Ettekanne j\u00e4i videosse ning on siis j\u00e4relvaadatav. Soovitame see pool tundi v\u00f5tta ja ettekanne \u00e4ra kuulata, saate endale n\u00f6 pildi ette ja taustateadmised selleteemalistest teadusuudiste\u00a0m\u00f5istmiseks ja hindamiseks.<\/p>\n<div id=\"attachment_68081\" style=\"width: 310px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/Fomalhaut_with_Disk_Ring_and_extrasolar_planet_b.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68081\" class=\"wp-image-68081 size-medium\" src=\"http:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/Fomalhaut_with_Disk_Ring_and_extrasolar_planet_b-300x200.jpg\" alt=\"Fomalhaut_with_Disk_Ring_and_extrasolar_planet_b\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/Fomalhaut_with_Disk_Ring_and_extrasolar_planet_b-300x200.jpg 300w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/Fomalhaut_with_Disk_Ring_and_extrasolar_planet_b-1024x684.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-68081\" class=\"wp-caption-text\">Fomalhaut b on otse vaadeldav t\u00e4he Fomalhaut \u00fcmber tiirlev planeet. Sellistel piltidel on pilve keskel olev ere t\u00e4ht \u00e4ra varjatud. Foto: Hubble Space Telescope, wikipedia<\/p><\/div>\n<p>T\u00e4naste hinnangute kohaselt leidub\u00a0meie Galaktikas iga t\u00e4he kohta \u00a0keskmiselt 1 kuni 1,6 planeeti. T\u00e4hti on rohkem kui 10<sup>11<\/sup>, nii et kandidaate eluks sobiliku planeedi otsimisel on rohkem kui piisavalt. Samas j\u00e4\u00e4b\u00a0populaarsetes teadusuudistest tihti tagaplaanile, kui keeruline on selliseid planeete tippteleskoopide andmetest \u00fcles leida ja kui kaugel on see protsess piltidest ja kujutlustest, mille \u00fcks esindaja on ka k\u00e4esolevas postituses (vt esimene pilt) ning mille kohta on kombeks \u00f6elda &#8220;n\u00e4gema&#8221;.<\/p>\n<p>Vaadake parem teist pilti\u00a0ja leidke sealt \u00fcles planeet Fomalhaut b.<\/p>\n<p>Vaadake asjale ka teistpidi &#8211; Maa koos meiega on Galaktika mastaabis t\u00e4iesti n\u00e4htamatu.<\/p>\n<p>Muide, eksoplaneetidest r\u00e4\u00e4gib ka <a href=\"http:\/\/fys.fyysika.ee\" target=\"_blank\">F\u00fc\u00fcsika \u00dcli\u00f5pilaste Seltsi <\/a>programmi &#8220;Tudeng f\u00fc\u00fcsikatundi&#8221; \u00fcks tundidest, kutsuge neid k\u00fclla!<\/p>\n<p>Vt ka<a href=\"http:\/\/en.wikipedia.org\/wiki\/Methods_of_detecting_exoplanets\">\u00a0http:\/\/en.wikipedia.org\/wiki\/Methods_of_detecting_exoplanets<\/a><\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.uttv.ee\/embed?id=21704\" width=\"720\" height=\"440\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; K\u00f5ik on kuulnud eksoplaneetidest. K\u00f5ik kes teavad, mismoodi neid planeete otsitakse ja leitakse, kui palju neid meie galaktikas \u00fcle\u00fcldse olemas olla v\u00f5i kuidas neid uuritakse v\u00f5ivad allj\u00e4rgneva ka lugemata j\u00e4tta. Aga k\u00f5igile\u00a0teistele &#8230; Eksoplaneetide avastamiseks kasutatakse allj\u00e4rgnevaid meetodeid: D\u00fcnaamiline\u00a0&#8211;\u00a0t\u00e4he radiaalkiiruse perioodilised muutused; Fotomeetriline &#8211; perioodilised t\u00e4hevarjutused. Sellel meetodil on\u00a0NASA satelliit Kepler on leidnud 1019 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":68081,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[16],"tags":[113],"class_list":{"0":"post-66665","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-teadusuudis","8":"tag-kauged-planeedid","9":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/66665","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=66665"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/66665\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/media\/68081"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=66665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=66665"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=66665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}