{"id":801,"date":"2022-12-04T12:23:35","date_gmt":"2022-12-04T10:23:35","guid":{"rendered":"http:\/\/www.cosmoespai.com\/cat\/?p=801"},"modified":"2022-12-04T12:23:35","modified_gmt":"2022-12-04T10:23:35","slug":"com-es-detecten-les-atmosferes-dels-exoplanetes","status":"publish","type":"post","link":"https:\/\/www.cosmoespai.com\/cat\/com-es-detecten-les-atmosferes-dels-exoplanetes\/","title":{"rendered":"Com es detecten les atmosferes dels exoplanetes?"},"content":{"rendered":"\n<p class=\"has-text-align-justify\">Els m\u00e8todes per detectar exoplanetes (planetes que es troben fora del sistema solar) s\u00f3n varis, i la t\u00e8cnica utilitzada varia enormement en cada cas. Gr\u00e0cies a noves tecnologies s\u2019han detectat fins a dia d\u2019avui m\u00e9s de 5.200 exoplanetes. No obstant, el nombre de planetes dels quals hem pogut analitzar la composici\u00f3 de la seva atmosfera \u00e9s molt redu\u00eft, ja que presenta un gran repte tecnol\u00f2gic.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">La composici\u00f3 qu\u00edmica d\u2019una atmosfera ens pot dir molt sobre les condicions f\u00edsiques del planeta, que possiblement pugui contenir indicis de vida.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><em><u><strong>Detecci\u00f3 d\u2019atmosferes en exoplanetes<\/strong><\/u><\/em><\/h4>\n\n\n\n<p class=\"has-text-align-justify\">Com vam explicar en un anterior article, el m\u00e8tode m\u00e9s utilitzat, i el que ens ha perm\u00e8s descobrir m\u00e9s exoplanetes, \u00e9s el <strong><a href=\"http:\/\/www.cosmoespai.com\/cat\/el-metode-del-transit-la-millor-manera-per-descobrir-exoplanetes\/\" target=\"_blank\" rel=\"noreferrer noopener\">tr\u00e0nsit de planetes<\/a><\/strong> al voltant d\u2019altres estrelles. Aquest m\u00e8tode consisteix en observar les petites caigudes en la brillantor d\u2019una estrella quan un planeta passa per davant d\u2019aquesta (el que s\u2019anomena un tr\u00e0nsit).<\/p>\n\n\n\n<p class=\"has-text-align-justify\">Mentre que una part de la llum queda bloquejada pel planeta, una part encara m\u00e9s petita passa a trav\u00e9s de l\u2019atmosfera del planeta. Quan podem observar aquest fenomen, les mol\u00e8cules presents a l\u2019atmosfera absorbeixen una part de l\u2019espectre de la llum de l\u2019estrella (cada element absorbeix una longitud d\u2019ona en concret) mentre que altres tipus de llum poden passar sense problema.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">Des de la Terra podem obtenir l\u2019espectre de la llum provinent del planeta, que ens marca quines longituds d\u2019ona han estat absorbides per la seva atmosfera. A partir d\u2019aqu\u00ed podem deduir quins elements estan presents a l\u2019atmosfera del planeta observat.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">No obstant, la fracci\u00f3 de la llum estel\u00b7lar que passa a trav\u00e9s de l\u2019atmosfera d\u2019un exoplaneta en tr\u00e0nsit \u00e9s molt petita. Aix\u00f2 limita els telescopis i els instruments que es poden utilitzar per aquest prop\u00f2sit, ja que han de ser molt potents per poder detectar, entre tota la llum de l\u2019estrella, aquella petita part que passa a trav\u00e9s de l\u2019atmosfera.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>Entrades Similars:<\/strong><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/el-metode-del-transit-la-millor-manera-per-descobrir-exoplanetes\/\">El m\u00e8tode del tr\u00e0nsit: la millor manera per descobrir exoplanetes<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/que-es-la-zona-habitable-duna-estrella\/\">Qu\u00e8 \u00e9s la zona habitable d\u2019una estrella?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/quants-planetes-existeixen-a-lunivers\/\">Quants planetes existeixen a l\u2019univers?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/com-es-formen-els-planetes\/\">Com es formen els planetes?<\/a><\/p>\n\n\n\n<p><strong>Entrades Populars:<\/strong><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/perque-la-lluna-nomes-ens-ensenya-una-cara\/\">Perqu\u00e8 la Lluna nom\u00e9s ens ensenya una cara?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/stephenson-2-18-lestrella-mes-gran-coneguda-a-lunivers\/\">Stephenson 2-18, l\u2019estrella m\u00e9s gran coneguda a l\u2019univers<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/lexplotacio-minera-al-cinturo-dasteroides-una-font-de-recursos\/\">L\u2019explotaci\u00f3 minera al cintur\u00f3 d\u2019asteroides, una font de recursos<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/la-brossa-espacial-un-gran-problema\/\">La brossa espacial, un gran problema<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/com-es-van-extingir-els-dinosaures\/\">Com es van extingir els dinosaures?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/que-passaria-si-la-terra-deixes-de-rotar\/\">Qu\u00e8 passaria si la Terra deix\u00e9s de rotar?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/la-missio-a-venus-de-la-sonda-venus-express-per-la-esa\/\">La missi\u00f3 a Venus de la sonda Venus Express per la ESA<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/quins-son-els-requisits-per-a-ser-un-planeta\/\">Quins s\u00f3n els requisits per a ser un planeta?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/perque-no-es-poden-sentir-sons-a-lespai\/\">Perqu\u00e8 no es poden sentir sons a l\u2019espai?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/quina-mida-i-forma-tindrien-els-extraterrestres\/\">Quina mida i forma tindrien els extraterrestres?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/les-unitats-de-mesura-que-fem-servir-en-astronomia\/\">Les unitats de mesura que fem servir en astronomia<\/a><\/p>\n\n\n\n<p><strong>Entrades Recents:<\/strong><\/p>\n\n\n<ul class=\"wp-block-latest-posts__list is-grid columns-3 wp-block-latest-posts\"><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/com-viatjar-al-futur-sense-violar-les-lleis-de-la-fisica\/\">Com Viatjar al Futur Sense Violar les Lleis de la F\u00edsica<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/que-es-la-gravetat\/\">Qu\u00e8 \u00e9s la gravetat?<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/per-que-hi-ha-mes-materia-que-antimateria-a-lunivers\/\">Per qu\u00e8 hi ha m\u00e9s mat\u00e8ria que antimat\u00e8ria a l\u2019univers?<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/que-es-lantimateria\/\">Qu\u00e8 \u00e9s l\u2019antimat\u00e8ria?<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/per-que-els-centres-de-les-galaxies-contenen-forats-negres\/\">Per qu\u00e8 els centres de les gal\u00e0xies contenen forats negres?<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Els m\u00e8todes per detectar exoplanetes (planetes que es troben fora del sistema solar) s\u00f3n varis, i la t\u00e8cnica utilitzada varia enormement en cada cas. Gr\u00e0cies<span class=\"read-more-link\"><a class=\"read-more\" href=\"https:\/\/www.cosmoespai.com\/cat\/com-es-detecten-les-atmosferes-dels-exoplanetes\/\">Continuar llegint<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":802,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":""},"categories":[658],"tags":[334,633,186,367,492,664,63,669,672,212],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/Deteccio_Atmosfera.jpg?fit=720%2C405","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":795,"url":"https:\/\/www.cosmoespai.com\/cat\/el-metode-del-transit-la-millor-manera-per-descobrir-exoplanetes\/","url_meta":{"origin":801,"position":0},"title":"El m\u00e8tode del tr\u00e0nsit: la millor manera per descobrir exoplanetes","author":"Ferran","date":"27 de novembre de 2022","format":false,"excerpt":"La cerca de planetes m\u00e9s enll\u00e0 del sistema solar va comen\u00e7ar fa tan sols unes d\u00e8cades, i al novembre de 2022, el n\u00famero d\u2019exoplanetes descoberts (planetes que es troben fora del sistema solar) ja supera els 5.250. Avui en dia s\u2019utilitzen v\u00e0ries t\u00e8cniques per poder detectar exoplanetes. La m\u00e9s utilitzada\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/11\/Transit_Exoplanetes.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/11\/Transit_Exoplanetes.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/11\/Transit_Exoplanetes.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/11\/Transit_Exoplanetes.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":821,"url":"https:\/\/www.cosmoespai.com\/cat\/quants-exoplanetes-hem-detectat-fins-avui\/","url_meta":{"origin":801,"position":1},"title":"Quants exoplanetes hem detectat fins avui?","author":"Ferran","date":"24 de desembre de 2022","format":false,"excerpt":"Un exoplaneta (tamb\u00e9 anomenat planeta extrasolar) \u00e9s un planeta que es troba m\u00e9s enll\u00e0 del sistema solar. A causa de les grans dist\u00e0ncies que ens separen de la resta d\u2019estrelles, i conseg\u00fcentment d\u2019altres planetes, fa que la detecci\u00f3 de planetes extrasolars sigui molt complicada. Per aquest motiu, la gran majoria\u2026","rel":"","context":"A &quot;Planetes&quot;","block_context":{"text":"Planetes","link":"https:\/\/www.cosmoespai.com\/cat\/category\/planetes\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/Planetes_Descoberts.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/Planetes_Descoberts.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/Planetes_Descoberts.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/Planetes_Descoberts.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":816,"url":"https:\/\/www.cosmoespai.com\/cat\/que-es-el-metode-de-deteccio-directa-dexoplanetes\/","url_meta":{"origin":801,"position":2},"title":"Qu\u00e8 \u00e9s el m\u00e8tode de detecci\u00f3 directa d\u2019exoplanetes?","author":"Ferran","date":"19 de desembre de 2022","format":false,"excerpt":"Dels diversos m\u00e8todes que existeixen per observar exoplanetes, la detecci\u00f3 directa pot semblar que sigui el sistema m\u00e9s senzill, per\u00f2, en realitat, \u00e9s el m\u00e9s complicat des del punt de vista t\u00e8cnic. Per aquest motiu, els m\u00e8todes m\u00e9s utilitzats per la detecci\u00f3 de planetes extrasolars s\u00f3n m\u00e8todes de detecci\u00f3 indirectes,\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/DeteccioDirecta_Exoplanetes.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/DeteccioDirecta_Exoplanetes.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/DeteccioDirecta_Exoplanetes.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/DeteccioDirecta_Exoplanetes.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":807,"url":"https:\/\/www.cosmoespai.com\/cat\/deteccio-dexoplanetes-el-metode-de-la-velocitat-radial\/","url_meta":{"origin":801,"position":3},"title":"Detecci\u00f3 d\u2019exoplanetes: el m\u00e8tode de la velocitat radial","author":"Ferran","date":"6 de desembre de 2022","format":false,"excerpt":"La detecci\u00f3 d\u2019exoplanetes s\u2019ha desenvolupat en gran mesura durant les \u00faltimes d\u00e8cades. Des de la primera detecci\u00f3 d\u2019un exoplaneta al 1994, s\u2019han anat posant en pr\u00e0ctica diversos m\u00e8todes per descobrir exoplanetes. A causa de les enormes dificultats per observar planetes directament, quasi totes les deteccions d\u2019exoplanetes s\u2019han efectuat mitjan\u00e7ant m\u00e8todes\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/Velocitat_Radialexoplanetes.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/Velocitat_Radialexoplanetes.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/Velocitat_Radialexoplanetes.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/12\/Velocitat_Radialexoplanetes.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":790,"url":"https:\/\/www.cosmoespai.com\/cat\/quants-planetes-existeixen-a-lunivers\/","url_meta":{"origin":801,"position":4},"title":"Quants planetes existeixen a l\u2019univers?","author":"Ferran","date":"20 de novembre de 2022","format":false,"excerpt":"La Terra forma part del sistema solar. L\u2019estrella d\u2019aquest sistema \u00e9s el Sol, i aquest est\u00e0 orbitat per 8 planetes (Mercuri, Venus, La Terra, Mart, J\u00fapiter, Saturn, Ur\u00e0, i Nept\u00fa). L\u2019univers est\u00e0 format per un n\u00famero inimaginable de gal\u00e0xies, que contenen, cada una d\u2019elles, milers de milions d\u2019estrelles. Per\u00f2, quants\u2026","rel":"","context":"A &quot;Planetes&quot;","block_context":{"text":"Planetes","link":"https:\/\/www.cosmoespai.com\/cat\/category\/planetes\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/11\/Planetes_Univers.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/11\/Planetes_Univers.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/11\/Planetes_Univers.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/11\/Planetes_Univers.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":228,"url":"https:\/\/www.cosmoespai.com\/cat\/un-planeta-que-esta-format-per-diamants\/","url_meta":{"origin":801,"position":5},"title":"Un planeta que est\u00e0 format per diamants","author":"Ferran","date":"25 de desembre de 2020","format":false,"excerpt":"El descobriment d\u2019exoplanetes est\u00e0 molt desenvolupat es comparaci\u00f3 de fa uns anys. Cada dia es descobreixen nous exoplanetes orbitant estrelles molt llunyanes a la nostra, i que no s\u2019assemblen gaire als que orbiten el Sol. Tot i aix\u00ed, al 2011, un equip de cient\u00edfics va descobrir un planeta format principalment\u2026","rel":"","context":"A &quot;Univers&quot;","block_context":{"text":"Univers","link":"https:\/\/www.cosmoespai.com\/cat\/category\/univers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2020\/12\/Planeta_Diamants.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2020\/12\/Planeta_Diamants.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2020\/12\/Planeta_Diamants.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2020\/12\/Planeta_Diamants.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/801"}],"collection":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/comments?post=801"}],"version-history":[{"count":4,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/801\/revisions"}],"predecessor-version":[{"id":806,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/801\/revisions\/806"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/media\/802"}],"wp:attachment":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/media?parent=801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/categories?post=801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/tags?post=801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}