{"id":7405,"date":"2026-11-08T15:47:07","date_gmt":"2026-11-08T20:47:07","guid":{"rendered":"https:\/\/canasanta.ca\/?p=7405"},"modified":"2026-11-08T15:47:07","modified_gmt":"2026-11-08T20:47:07","slug":"dos-anillos-restos-planetas-enana-blanca-j1328","status":"publish","type":"post","link":"https:\/\/canasanta.ca\/en\/ciencia\/cosmos\/dos-anillos-restos-planetas-enana-blanca-j1328\/","title":{"rendered":"DOS ANILLOS REVELAN LOS RESTOS DE MUNDOS DESTRUIDOS"},"content":{"rendered":"

Una estrella muerta, situada a unos 1.600 a\u00f1os luz de la Tierra, conserva se\u00f1ales de un sistema planetario que sufri\u00f3 una transformaci\u00f3n violenta. Astr\u00f3nomos han identificado dos anillos distintos de escombros alrededor de la enana blanca J1328\u22121450<\/strong>, una estructura poco com\u00fan que permite estudiar qu\u00e9 sucede con los mundos cuando su estrella agota el combustible. El hallazgo fue divulgado el 7 de noviembre de 2026 y corresponde a una investigaci\u00f3n publicada en Nature Astronomy<\/em>.<\/p>\n

Las enanas blancas son n\u00facleos estelares extremadamente densos: representan una etapa final de estrellas de masa relativamente modesta, como nuestro Sol. Aunque ya no producen energ\u00eda mediante la fusi\u00f3n del hidr\u00f3geno en sus centros, permanecen calientes durante much\u00edsimo tiempo. En torno a algunas se han detectado discos de polvo y gas que delatan la destrucci\u00f3n de asteroides, planetesimales o cuerpos mayores.<\/p>\n

DOS ANILLOS EN UNA ESTRELLA MUERTA<\/h2>\n

Lo extraordinario de J1328\u22121450 no es solamente que tenga material a su alrededor, sino que ese material parece distribuirse en dos anillos diferenciados<\/strong>. Entre las 22 enanas blancas conocidas con restos circunestelares en la muestra citada por los investigadores, esta es la primera que muestra una estructura doble de ese tipo.<\/p>\n

El equipo utiliz\u00f3 observaciones del Very Large Telescope<\/strong>, operado por el Observatorio Europeo Austral en Chile. Los instrumentos permitieron examinar la luz procedente del entorno de la estrella y buscar pistas qu\u00edmicas sobre la composici\u00f3n de los escombros. El an\u00e1lisis ofrece una ventana a cuerpos que ya no pueden observarse intactos.<\/p>\n

La estrella posee aproximadamente el 47 % de la masa solar, concentrada en un di\u00e1metro comparable al terrestre. Esa combinaci\u00f3n explica la enorme gravedad caracter\u00edstica de las enanas blancas. Un objeto rocoso que se aproxima demasiado puede ser fragmentado por fuerzas de marea, hasta alimentar un anillo de material que gira alrededor del remanente estelar.<\/p>\n

QU\u00c9 OCURRI\u00d3 CON LOS CUERPOS ROCOSOS<\/h2>\n

Una explicaci\u00f3n posible es que los dos anillos procedan de cuerpos diferentes, alterados por la evoluci\u00f3n del sistema. Los investigadores consideran incluso que uno de esos objetos pudo alcanzar dimensiones comparables a las de Plut\u00f3n. Pero esta interpretaci\u00f3n todav\u00eda es una hip\u00f3tesis: los anillos no constituyen una fotograf\u00eda directa de dos planetas destruidos.<\/p>\n

\"Nebulosa
Nebulosa NGC 6302, ejemplo de evoluci\u00f3n estelar. Imagen de contexto, no de J1328\u22121450. NASA\/ESA\/Hubble.<\/figcaption><\/figure>\n

Los indicios qu\u00edmicos a\u00f1aden complejidad. Las diferencias de magnesio entre el material de las dos regiones podr\u00edan se\u00f1alar or\u00edgenes distintos, o bien capas diferentes de un mismo cuerpo que se fragment\u00f3. Distinguir entre ambas posibilidades exigir\u00e1 m\u00e1s observaciones y modelos f\u00edsicos.<\/p>\n

El descubrimiento importa porque la muerte de una estrella no borra necesariamente toda la historia de su sistema planetario. Algunos cuerpos sobreviven a la fase de gigante roja en \u00f3rbitas lejanas; otros cambian de trayectoria por interacciones gravitatorias y terminan aproxim\u00e1ndose a la enana blanca. All\u00ed pueden desintegrarse y dejar una firma observable.<\/p>\n

UNA PISTA SOBRE EL FUTURO DEL SOL<\/h2>\n

Nuestro Sol tambi\u00e9n cambiar\u00e1 radicalmente dentro de unos cinco mil millones de a\u00f1os, cuando evolucione hacia la fase de gigante roja y posteriormente deje una enana blanca. El destino exacto de cada planeta depende de numerosos factores, por lo que J1328\u22121450 no debe presentarse como una predicci\u00f3n literal de lo que ocurrir\u00e1 con la Tierra.<\/p>\n

Lo que s\u00ed proporciona es un laboratorio natural para reconstruir la qu\u00edmica y la din\u00e1mica de sistemas planetarios antiguos. Los escombros que parecen simples anillos pueden conservar informaci\u00f3n sobre la arquitectura de mundos desaparecidos, incluso mucho despu\u00e9s de que la estrella que los iluminaba haya dejado de brillar como antes.<\/p>\n

Para los astr\u00f3nomos, la pr\u00f3xima tarea consiste en establecer si los anillos son estructuras estables, c\u00f3mo se alimentan y por qu\u00e9 difieren en composici\u00f3n. Cada respuesta ayudar\u00e1 a entender hasta qu\u00e9 punto los sistemas planetarios siguen evolucionando despu\u00e9s de la muerte de sus estrellas.<\/p>","protected":false},"excerpt":{"rendered":"

Astr\u00f3nomos encuentran dos anillos de restos planetarios alrededor de una enana blanca a 1.600 a\u00f1os luz. El hallazgo abre una ventana al destino de los sistemas estelares.<\/p>","protected":false},"author":284226809,"featured_media":7403,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[33205457,33205423],"tags":[33205574],"class_list":["post-7405","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-al-dia","category-cosmos","tag-astronomia"],"acf":[],"yoast_head":"\nDOS ANILLOS REVELAN LOS RESTOS DE MUNDOS DESTRUIDOS - 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El problema es\u2026","rel":"","context":"In "AL D\u00cdA!"","block_context":{"text":"AL D\u00cdA!","link":"https:\/\/canasanta.ca\/en\/category\/al-dia\/"},"img":{"alt_text":"CS enana blanca","src":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/09\/CS_enana_blanca_001.jpg?fit=1200%2C631&quality=82&strip=all&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/09\/CS_enana_blanca_001.jpg?fit=1200%2C631&quality=82&strip=all&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/09\/CS_enana_blanca_001.jpg?fit=1200%2C631&quality=82&strip=all&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/09\/CS_enana_blanca_001.jpg?fit=1200%2C631&quality=82&strip=all&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/09\/CS_enana_blanca_001.jpg?fit=1200%2C631&quality=82&strip=all&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":6610,"url":"https:\/\/canasanta.ca\/en\/ciencia\/cosmos\/37-galaxias-enanas-misterio-oxigeno-perdido\/","url_meta":{"origin":7405,"position":3},"title":"37 GALAXIAS ENANAS ESCONDEN EL MISTERIO DEL OX\u00cdGENO PERDIDO","author":"Ca\u00f1asanta","date":"November 2, 2026","format":false,"excerpt":"Un estudio de 37 galaxias enanas cercanas ha encontrado algo que no encaja con lo esperado: gran parte del ox\u00edgeno producido por sus estrellas parece haber desaparecido. El resultado obliga a mirar de nuevo c\u00f3mo las galaxias peque\u00f1as fabrican, retienen y expulsan los elementos pesados que terminan formando nuevas estrellas,\u2026","rel":"","context":"In "AL D\u00cdA!"","block_context":{"text":"AL D\u00cdA!","link":"https:\/\/canasanta.ca\/en\/category\/al-dia\/"},"img":{"alt_text":"Galaxia enana NGC 4449 observada por el telescopio espacial Hubble, con regiones de formaci\u00f3n estelar y gas brillante.","src":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/NGC-4449-%E2%80%94-galaxia-enana-estudiada-por-Hubble.jpg?fit=1200%2C900&quality=82&strip=all&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/NGC-4449-%E2%80%94-galaxia-enana-estudiada-por-Hubble.jpg?fit=1200%2C900&quality=82&strip=all&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/NGC-4449-%E2%80%94-galaxia-enana-estudiada-por-Hubble.jpg?fit=1200%2C900&quality=82&strip=all&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/NGC-4449-%E2%80%94-galaxia-enana-estudiada-por-Hubble.jpg?fit=1200%2C900&quality=82&strip=all&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/NGC-4449-%E2%80%94-galaxia-enana-estudiada-por-Hubble.jpg?fit=1200%2C900&quality=82&strip=all&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":5901,"url":"https:\/\/canasanta.ca\/en\/al-dia\/nuevo-mundo-mas-alla-pluton-2026-ed138\/","url_meta":{"origin":7405,"position":4},"title":"UN NUEVO MUNDO APARECE M\u00c1S ALL\u00c1 DE PLUT\u00d3N","author":"Ca\u00f1asanta","date":"October 28, 2026","format":false,"excerpt":"El Observatorio Vera C. Rubin ha identificado 2026 ED138, un gran objeto helado m\u00e1s all\u00e1 de Plut\u00f3n que podr\u00eda convertirse en un nuevo planeta enano reconocido del Sistema Solar.","rel":"","context":"In "AL D\u00cdA!"","block_context":{"text":"AL D\u00cdA!","link":"https:\/\/canasanta.ca\/en\/category\/al-dia\/"},"img":{"alt_text":"Observatorio astron\u00f3mico bajo un cielo estrellado en Chile","src":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/10\/Observatorio-bajo-el-cielo-nocturno-de-Chile.jpg?fit=1080%2C720&quality=82&strip=all&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/10\/Observatorio-bajo-el-cielo-nocturno-de-Chile.jpg?fit=1080%2C720&quality=82&strip=all&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/10\/Observatorio-bajo-el-cielo-nocturno-de-Chile.jpg?fit=1080%2C720&quality=82&strip=all&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/10\/Observatorio-bajo-el-cielo-nocturno-de-Chile.jpg?fit=1080%2C720&quality=82&strip=all&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/10\/Observatorio-bajo-el-cielo-nocturno-de-Chile.jpg?fit=1080%2C720&quality=82&strip=all&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":6329,"url":"https:\/\/canasanta.ca\/en\/al-dia\/webb-galaxia-anillo-colision-cosmica-gs18660\/","url_meta":{"origin":7405,"position":5},"title":"WEBB DESCUBRE UNA GALAXIA EN ANILLO TRAS UN POSIBLE CHOQUE C\u00d3SMICO","author":"Ca\u00f1asanta","date":"October 31, 2026","format":false,"excerpt":"El telescopio espacial James Webb ha permitido identificar la galaxia en anillo m\u00e1s distante conocida hasta ahora, un sistema observado cuando el universo ten\u00eda apenas unos 2.100 millones de a\u00f1os y cuya forma extraordinaria podr\u00eda ser la cicatriz de una violenta colisi\u00f3n gal\u00e1ctica. El objeto, denominado GS18660, se encuentra a\u2026","rel":"","context":"In "AL D\u00cdA!"","block_context":{"text":"AL D\u00cdA!","link":"https:\/\/canasanta.ca\/en\/category\/al-dia\/"},"img":{"alt_text":"Telescopio espacial James Webb durante una inspecci\u00f3n en la sala limpia del Centro Goddard de la NASA. Foto: NASA\/Chris Gunn.","src":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/10\/James-Webb-durante-inspeccion-en-NASA-Goddard.jpg?fit=957%2C1200&quality=82&strip=all&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/10\/James-Webb-durante-inspeccion-en-NASA-Goddard.jpg?fit=957%2C1200&quality=82&strip=all&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/10\/James-Webb-durante-inspeccion-en-NASA-Goddard.jpg?fit=957%2C1200&quality=82&strip=all&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/10\/James-Webb-durante-inspeccion-en-NASA-Goddard.jpg?fit=957%2C1200&quality=82&strip=all&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/Ilustracion-de-una-enana-blanca-y-material-rocoso-%E2%80%94-NASA-ESA.jpg?fit=1200%2C630&quality=82&strip=all&ssl=1","_links":{"self":[{"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/posts\/7405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/users\/284226809"}],"replies":[{"embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/comments?post=7405"}],"version-history":[{"count":1,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/posts\/7405\/revisions"}],"predecessor-version":[{"id":7406,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/posts\/7405\/revisions\/7406"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/media\/7403"}],"wp:attachment":[{"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/media?parent=7405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/categories?post=7405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/tags?post=7405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}