{"id":103,"date":"2012-11-06T09:58:05","date_gmt":"2012-11-06T09:58:05","guid":{"rendered":"http:\/\/www.radio-science.eu\/?page_id=103"},"modified":"2023-11-10T15:26:19","modified_gmt":"2023-11-10T15:26:19","slug":"corot","status":"publish","type":"page","link":"https:\/\/fip-koeln.de\/en_us\/missionen-und-ziele\/corot\/","title":{"rendered":"CoRot"},"content":{"rendered":"

Was sind Exoplaneten?<\/b><\/h1>\n\n\n\n

Since the detection of the first extrasolar planet around 51 Pegasi (Mayor & Queloz, 1995), the search for extrasolar planets has been intensified. Around X planets have been detected in our galaxy (May 2014). Figure 1 compares the planetary system 51 Pegasi with our Solar System and visualises the difference in size between the two.<\/p>\n\n\n\n

Figure 1:<\/p>\n\n\n\n

\n
\"image1\"<\/figure>\n\n\n\n
\"image2\"<\/figure>\n<\/div>\n\n\n\n

<\/p>\n\n\n\n

Welche K\u00f6rper als extrasolare Planeten bezeichnet werden d\u00fcrfen legte 2003 die IAU Working Group on Extrasolar Planets fest:<\/p>\n\n\n\n

K\u00f6rper mit einer wahren Masse unterhalb der Massengrenze f\u00fcr thermonukleare Fusion von Deuterium (< 13 Jupitermassen f\u00fcr K\u00f6rper mit solarer Metallizit\u00e4t), die sich in einem Orbit um einen Stern oder um \u00dcberreste eines Sterns befinden (die Planetenentstehung spielt dabei keine Rolle) sind extrasolare Planeten. Die wiederum \u00fcber Masse\/Gr\u00f6\u00dfe wie in unserem Sonnensystem definiert werden (Jupiter, Neptun, Erde).<\/p>\n\n\n\n

The nomenclature of extrasolar planets ist composed of the name of its central star and small letters in alphabetical order starting with b of their detection from the inside to the outside. (Figure 2)<\/p>\n\n\n\n

Figure 2:<\/p>\n\n\n\n

\"image3\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

Die bis heute entdeckten extrasolaren Planetensysteme zeigen ein weites Feld der Entwicklungszust\u00e4nde. Es gibt Planeten, die ihren Stern auf sehr nahen exzentrischen Orbits (e > 0,3) umkreisen (Zum Vergleich: die gr\u00f6\u00dften Exzentrizit\u00e4ten in unserem Sonnensystem sind e = 0,2 f\u00fcr Merkur und Pluto). Andere extrasolare Planeten befinden sich auf Orbits, die wesentlich geringere Entfernungen von ihrem Stern haben, als der sonnenn\u00e4chste Planet Merkur (0,39 AU) in unserem Sonnensystem. Nicht nur die Orbits der extrasolaren Planeten weisen eine hohe Variabilit\u00e4t auf, auch unterscheiden sich die Planeten durch ihre innere Struktur und Zusammensetzung (Gesteinsplaneten, Gasriesen). Die Sterne selber zeigen ein ebenso breites Spektrum. Es gibt nicht nur Hauptreihensterne wie unsere Sonne, sondern auch massearme Sterne, Riesen, wei\u00dfe Zwerge und Pulsare, die von planetaren Begleitern umkreist werden.<\/p>\n\n\n\n

Life as we define it in planetary systems is only possible within the habitable zone. It is characterized by available water in a liquid state, which is a essential for life. The area of \u200b\u200bthe habitable zone depends on the type of star. In our Solar System the habitable zone extends from the orbit of Venus to the orbit of Mars (0.95 to 1.37 AU, Kasting et al., 1993). The habitable zone for hotter stars is further away from the star and for cooler stars it is closer to the star (Figure 3).<\/p>\n\n\n\n

Figure 3:<\/p>\n\n\n\n

\"image4\"<\/figure>","protected":false},"excerpt":{"rendered":"

Was sind Exoplaneten? Seit der Entdeckung des ersten extrasolaren Planeten um 51 Pegasi (Mayor & Queloz, 1995) wurde die Suche nach extrasolaren Planeten enorm intensiviert und bis heute X Planeten entdeckt. Diese Planeten befinden sich alle in unserer Milchstra\u00dfe. Abbildung 1 zeigt das Planetensystem 51 Pegasi im Vergleich zu unserem Sonnensystem. Zum Gr\u00f6\u00dfenvergleich des Systems […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":21,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-103","page","type-page","status-publish","hentry"],"yoast_head":"\nCoRot - Radio Science<\/title>\n<meta name=\"description\" content=\"Exoplaneten sind Planeten au\u00dferhalb unseres Sonnensystems innerhalb fremder Planetensysteme. 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Seit der Entdeckung des ersten extrasolaren Planeten um 51 Pegasi (Mayor & Queloz, 1995) wurde die Suche nach extrasolaren Planeten enorm intensiviert und bis heute X Planeten entdeckt. Diese Planeten befinden sich alle in unserer Milchstra\u00dfe. Abbildung 1 zeigt das Planetensystem 51 Pegasi im Vergleich zu unserem Sonnensystem. Zum Gr\u00f6\u00dfenvergleich des Systems…","_links":{"self":[{"href":"https:\/\/fip-koeln.de\/en_us\/wp-json\/wp\/v2\/pages\/103","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fip-koeln.de\/en_us\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/fip-koeln.de\/en_us\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/fip-koeln.de\/en_us\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fip-koeln.de\/en_us\/wp-json\/wp\/v2\/comments?post=103"}],"version-history":[{"count":13,"href":"https:\/\/fip-koeln.de\/en_us\/wp-json\/wp\/v2\/pages\/103\/revisions"}],"predecessor-version":[{"id":1958,"href":"https:\/\/fip-koeln.de\/en_us\/wp-json\/wp\/v2\/pages\/103\/revisions\/1958"}],"up":[{"embeddable":true,"href":"https:\/\/fip-koeln.de\/en_us\/wp-json\/wp\/v2\/pages\/21"}],"wp:attachment":[{"href":"https:\/\/fip-koeln.de\/en_us\/wp-json\/wp\/v2\/media?parent=103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}