{"id":1233,"date":"2016-05-17T17:49:48","date_gmt":"2016-05-17T15:49:48","guid":{"rendered":"http:\/\/www.icog.es\/redespa\/?p=1233"},"modified":"2019-05-23T11:15:34","modified_gmt":"2019-05-23T09:15:34","slug":"interesantes-noticias-habitabilidad-planetaria-del-instituto-carl-sagan","status":"publish","type":"post","link":"https:\/\/www.icog.es\/redespa\/index.php\/interesantes-noticias-habitabilidad-planetaria-del-instituto-carl-sagan\/","title":{"rendered":"Interesantes noticias sobre habitabilidad planetaria del Instituto Carl Sagan"},"content":{"rendered":"<p>Es un placer para REDESPA compartir esta magn\u00edfica e interesante noticia sobre habitabilidad planetaria, que nos env\u00eda nuestro colega y miembro de REDESPA, el Dr. Ramses Ram\u00edrez, cient\u00edfico planetario del <a href=\"http:\/\/carlsagan.institute\/\">Carl Sagan<\/a><a href=\"http:\/\/carlsagan.institute\/\">\u00a0Institute<\/a>\u00a0 e\u00a0Investigador Asociado postdoctoral del Departamento de Astronom\u00eda de la <a href=\"http:\/\/www.cornell.edu\/\">Cornell University<\/a>. Los resultados de su estudio, que acaba de publicarse en la revista The Astrophysical Journal, abren nuevas perspectivas a la hora de establecer los criterios sobre habitabilidad planetaria y suponen un importante logro en este interesante campo de investigaci\u00f3n.<\/p>\n<p><em><strong>Nota del Dr. Ramses Ram\u00edrez:<\/strong><\/em><\/p>\n<p>La \u00abzona habitable\u00bb es la regi\u00f3n alrededor de una estrella donde el agua en la superficie de un planeta es l\u00edquida y donde signos de vida se podr\u00edan detectar de forma remota con los telescopios. En nuestro sistema solar esta zona comienza cerca de la \u00f3rbita de Venus y se extiende hasta pasar un poco la \u00f3rbita de Marte. Pero cuando nuestro sol envejezca y su brillo aumente, se ir\u00e1 expandiendo y converti\u00e9ndose en gigante roja. Durante esta fase de gigante roja, la zona habitable se alejar\u00e1 hacia afuera, calentando las regiones exteriores del sistema solar. As\u00ed que, mundos congelados, como Europa y Encelado &#8211;\u00a0 lunas orbitando Jupiter y Saturno \u2013se podr\u00e1n descongelar y albergar condiciones m\u00e1s c\u00e1lidas.<\/p>\n<p>Este mismo concepto se podr\u00eda trasladar a otros sistemas solares. En su trabajo, Ramses M. Ramirez, autor principal e investigador postdoctoral en el Instituto Carl Sagan de la Universidad de Cornell y Lisa Kaltenegger, profesora asociada de astronom\u00eda (Figura 1),han modelado la evoluci\u00f3n de las zonas habitables de estrellas antiguas y el tiempo que un planeta (o luna) pueda tener un clima algo templado. Su investigaci\u00f3n, \u00abZonas Habitables de la Postsecuencia Principal\u00bb, se public\u00f3 en la revista Astrophysical Journal el 16 de Mayo.<\/p>\n<p>Los investigadores encontraron que los planetas que permanecen m\u00e1s tiempo\u00a0 en esta zona habitable de gigante roja son los que giran alrededor de estrellas m\u00e1s fr\u00edas y chiquitas que nuestro sol.<\/p>\n<p>\u00abPara las estrellas que son como nuestro sol, pero con m\u00e1s edad, tales planetas descongelados podr\u00edan permanecer c\u00e1lidos hasta quinientos millones de a\u00f1os en la zona habitable de gigante roja\u00bb, dice Ram\u00edrez (Figura 2). En cambio, el tiempo m\u00e1ximo incrementa a mil millones de a\u00f1os para las estrellas m\u00e1s fr\u00edas y chiquitas.<\/p>\n<p>\u00ab<em>En un futuro lejano, estos mundos orbitando alrededor de peque\u00f1os soles de color rojo podr\u00edan mantenerse habitables por mil millones de a\u00f1os, tal vez la vida pueda surgir en ellos, al igual que en la Tierra. Esto me hace sentir muy optimista sobre las posibilidades de la vida a largo plazo<\/em> \u00ab, dice Kaltenegger.<\/p>\n<p>Esta investigaci\u00f3n fue apoyada por la Fundaci\u00f3n Simons y por el Instituto Carl Sagan.<\/p>\n<p><a href=\"https:\/\/www.icog.es\/redespa\/wp-content\/uploads\/2016\/05\/ramses1.jpg\"><img decoding=\"async\" class=\"alignleft size-medium wp-image-1234\" src=\"https:\/\/www.icog.es\/redespa\/wp-content\/uploads\/2016\/05\/ramses1-300x201.jpg\" alt=\"ramses1\" width=\"300\" height=\"201\" srcset=\"https:\/\/www.icog.es\/redespa\/wp-content\/uploads\/2016\/05\/ramses1-192x128.jpg 192w, https:\/\/www.icog.es\/redespa\/wp-content\/uploads\/2016\/05\/ramses1-300x201.jpg 300w, https:\/\/www.icog.es\/redespa\/wp-content\/uploads\/2016\/05\/ramses1.jpg 628w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><em><strong>Figura 1: <\/strong>Ramses Ram\u00edrez, izquierda, y Lisa Kaltenegger \u00a0con una r\u00e9plica de nuestro mundo habitable mientras buscan otros lugares en el universo donde la vida podr\u00eda prosperar.<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.icog.es\/redespa\/wp-content\/uploads\/2016\/05\/Ramses2.jpg\"><img decoding=\"async\" class=\"alignleft size-medium wp-image-1235\" src=\"https:\/\/www.icog.es\/redespa\/wp-content\/uploads\/2016\/05\/Ramses2-211x300.jpg\" alt=\"Ramses2\" width=\"211\" height=\"300\" srcset=\"https:\/\/www.icog.es\/redespa\/wp-content\/uploads\/2016\/05\/Ramses2-211x300.jpg 211w, https:\/\/www.icog.es\/redespa\/wp-content\/uploads\/2016\/05\/Ramses2.jpg 611w\" sizes=\"(max-width: 211px) 100vw, 211px\" \/><\/a><\/p>\n<p><em><strong>Figura 2:<\/strong> Se\u2005muestra\u2005donde\u2005un\u2005planeta\u2005puede\u2005ser\u2005habitable\u2005y\u2005caliente\u2005alrededor\u2005de\u2005nuestro\u2005sol\u2005mientras\u2005el\u2005sol\u2005envejece<\/em><\/p>\n<p><strong>Cr\u00e9dito:\u2005<\/strong>Cornell\u2005University<\/p>\n<ul>\n<li><em><strong>Informaci\u00f3n adicional sobre Ramses Ram\u00edrez puede encontrarse <a href=\"https:\/\/habitableplanets.wordpress.com\/\">aqu\u00ed<\/a> y <a href=\"http:\/\/astro.cornell.edu\/members\/ramses-ramirez.html\">aqu\u00ed<\/a><\/strong><\/em><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>HABITABLE ZONES OF POST-MAIN SEQUENCE STARS<\/p>\n<p><em><span style=\"font-weight: inherit;\" data-authors=\"\"><span style=\"font-weight: inherit;\"><span style=\"font-weight: inherit;\">Ramses M. Ramirez\u00a0and\u00a0Lisa Kaltenegger<\/span><\/span><\/span><\/em><\/p>\n<p><span style=\"font-style: inherit; font-weight: inherit;\"><a href=\"http:\/\/iopscience.iop.org\/journal\/0004-637X\">The Astrophysical Journal<\/a>,\u00a0<a href=\"http:\/\/iopscience.iop.org\/0004-637X\/823\">Volume 823<\/a>,\u00a0<a href=\"http:\/\/iopscience.iop.org\/0004-637X\/823\/1\">Number 1<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Es un placer para REDESPA compartir esta magn\u00edfica e interesante noticia sobre habitabilidad planetaria, que nos env\u00eda nuestro colega y miembro de REDESPA, el Dr. Ramses Ram\u00edrez, cient\u00edfico planetario del Carl Sagan\u00a0Institute\u00a0 e\u00a0Investigador Asociado postdoctoral  [&#8230;]<\/p>\n","protected":false},"author":2,"featured_media":1236,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,14,23,58],"tags":[357,146,35,73],"class_list":["post-1233","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astrobiologia","category-noticias","category-planetologia","category-publicaciones-2","tag-antiguas-estrellas-rojas","tag-habitabilidad","tag-redespa","tag-sagan"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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Head, CSIC's Research Group \\\"Meteorites and Planetary Geosciences\\\" - Science Team Member, NASA-MSL, ESA-ExoMars and MARS2020 - Collaborator, ESA-BIOMEX - Founder and Director, Spanish Planetology and Astrobiology Network (REDESPA) - Professor \\\"Ad Honorem\\\" of Planetary Geochemistry, ETSII (Polytechnic University of Madrid) - Chair, IUGS Commission on Geoscience Education, Training and Technology Transfer (IUGS-COGE) - President, International Association for Geoethics (IAGETH) - OC Member, International Commission on Astrobiology, IAU - Science Officer (Origins and Astrobiology) EGU Division of Planetary and Solar System Sciences - Councilor, European Astrobiology Network Association - Goodwill Ambassador, Geological Society of Africa - Coordinator of AGID National Chapter in Spain (mainly devoted to Geoethics) - National Focal Point, Earth Science Matters - Senior Advisory Board Member, Arabian Geosciences Union (AraGU) - Former Regional Coordinator in Spain, TPS-Spain, The Planetary Society - 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