{"id":10997,"date":"2015-07-16T12:01:31","date_gmt":"2015-07-16T16:01:31","guid":{"rendered":"http:\/\/hobbyspace.com\/Blog\/?p=10997"},"modified":"2015-07-16T12:01:31","modified_gmt":"2015-07-16T16:01:31","slug":"eso-exoplanet-found-similar-to-jupiter-in-mass-and-distance-from-its-star","status":"publish","type":"post","link":"https:\/\/hobbyspace.com\/Blog\/?p=10997","title":{"rendered":"ESO: Exoplanet found similar to Jupiter in mass and distance from its star"},"content":{"rendered":"

A new report from\u00a0ESO<\/a>\u00a0(European Southern Observatory):<\/p>\n

Jupiter Twin Discovered Around Solar Twin<\/a><\/strong><\/p>\n

An international group of astronomers has used the ESO 3.6-metre telescope to identify a planet just like Jupiter orbiting at the same distance from a Sun-like star, HIP 11915. According to current theories, the formation of Jupiter-mass planets plays an important role in shaping the architecture of planetary systems. The existence of a Jupiter-mass planet in a Jupiter-like orbit around a Sun-like star opens the possibility that the system of planets around this star may be similar to our own Solar System. HIP 11915 is about the same age as the Sun and, furthermore, its Sun-like composition suggests that there may also be rocky planets orbiting closer to the star.<\/p>\n

\"eso1529a[1]\"<\/a><\/p>\n

An artist\u2019s impression<\/a> showing a newly discovered Jupiter twin gas giant orbiting the solar twin star, HIP 11915. The planet is of a very similar mass to Jupiter and orbits at the same distance from its star as Jupiter does from the Sun. This, together with HIP 11915\u2019s Sun-like composition, hints at the possibility of the system of planets orbiting HIP 11915 bearing a resemblance to our own Solar System, with smaller rocky planets orbiting closer to the host star.\u00a0<\/em>Credit:\u00a0<\/em>ESO\/L. Benassi
\n<\/em>Click for larger image.<\/a><\/em><\/p>\n

So far, exoplanet surveys have been most sensitive to planetary systems that are populated in their inner regions by massive planets, down to a few times the mass of the Earth [1]<\/a>. This contrasts with our Solar System, where there are small rocky planets in the inner regions and gas giants like Jupiter farther out.<\/p>\n

According to the most recent theories, the arrangement of our Solar System, so conducive to life, was made possible by the presence of Jupiter and the gravitational influence this gas giant exerted on the Solar System during its formative years. It would seem, therefore, that finding a Jupiter twin is an important milestone on the road to finding a planetary system that mirrors our own.<\/p>\n

A Brazilian-led team has been targeting Sun-like stars in a bid to find planetary systems similar to our Solar System. The team has now uncovered a planet with a very similar mass to Jupiter [2]<\/a>, orbiting a Sun-like star, HIP 11915, at almost exactly the same distance as Jupiter. The new discovery was made using HARPS<\/a>, one of the world\u2019s most precise planet-hunting instruments, mounted on the ESO 3.6-metre telescope<\/a> at the La Silla Observatory<\/a> in Chile.<\/p>\n

http:\/\/cdn.eso.org\/videos\/medium_podcast\/eso1529a.m4v<\/a><\/video><\/div>\n

Although many planets similar to Jupiter have been found [3]<\/a> at a variety of distances from Sun-like stars, this newly discovered planet, in terms of both mass and distance from its host star, and in terms of the similarity between the host star and our Sun, is the most accurate analogue yet found for the Sun and Jupiter.<\/p>\n

The planet\u2019s host, the solar twin HIP 11915, is not only similar in mass to the Sun, but is also about the same age. To further strengthen the similarities, the composition of the star is similar to the Sun\u2019s. The chemical signature of our Sun may be partly marked by the presence of rocky planets in the Solar System, hinting at the possibility of rocky planets also around HIP 11915.<\/p>\n

According to Jorge Melendez, of the Universidade de S\u00e3o Paulo, Brazil, the leader of the team and co-author of the paper,\u201cthe quest for an Earth 2.0, and for a complete Solar System 2.0, is one of the most exciting endeavors in astronomy. We are thrilled to be part of this cutting-edge research, made possible by the observational facilities provided by ESO.\u201d<\/em> [4]<\/a><\/p>\n

Megan Bedell, from the University of Chicago and lead author of the paper, concludes: \u201cAfter two decades of hunting for exoplanets, we are finally beginning to see long-period gas giant planets similar to those in our own Solar System thanks to the long-term stability of planet hunting instruments like HARPS. This discovery is, in every respect, an exciting sign that other solar systems may be out there waiting to be discovered.\u201d<\/em><\/p>\n

Follow-up observations are needed to confirm and constrain the finding, but HIP 11915 is one of the most promising candidates so far to host a planetary system similar to our own.<\/p>\n","protected":false},"excerpt":{"rendered":"

A new report from\u00a0ESO\u00a0(European Southern Observatory): Jupiter Twin Discovered Around Solar Twin An international group of astronomers has used the ESO 3.6-metre telescope to identify a planet just like Jupiter orbiting at the same distance from a Sun-like star, HIP 11915. According to current theories, the formation of Jupiter-mass planets plays an important role in … Continue reading ESO: Exoplanet found similar to Jupiter in mass and distance from its star<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[12],"tags":[],"class_list":["post-10997","post","type-post","status-publish","format-standard","hentry","category-astronomy"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-2Rn","jetpack-related-posts":[{"id":6054,"url":"https:\/\/hobbyspace.com\/Blog\/?p=6054","url_meta":{"origin":10997,"position":0},"title":"ESO spots planet orbiting star similar to the sun in star cluster","author":"TopSpacer","date":"January 15, 2014","format":false,"excerpt":"Here's an announcement from \u00a0ESO\u00a0(European Southern Observatory): First Planet Found Around Solar Twin in Star Cluster Six-year search with HARPS finds three new planets in Messier 67 Astronomers have used ESO's HARPS planet hunter in Chile, along with other telescopes around the world, to discover three planets orbiting stars in\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.eso.org\/public\/archives\/images\/newsfeature\/eso1402a.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":24731,"url":"https:\/\/hobbyspace.com\/Blog\/?p=24731","url_meta":{"origin":10997,"position":1},"title":"ESO: VLT spots planet orbiting most massive star pair so far","author":"TopSpacer","date":"December 8, 2021","format":false,"excerpt":"The latest report from the European Southern Observatory (ESO): ESO telescope images planet around most massive star pair to date The European Southern Observatory\u2019s Very Large Telescope (ESO\u2019s VLT) has captured an image of a planet orbiting b Centauri, a two-star system that can be seen with the naked eye.\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2021\/12\/eso2118c1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2021\/12\/eso2118c1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2021\/12\/eso2118c1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2021\/12\/eso2118c1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":13949,"url":"https:\/\/hobbyspace.com\/Blog\/?p=13949","url_meta":{"origin":10997,"position":2},"title":"ESO: 7 Earth-sized worlds found in dwarf star system – 3 in habitable zone","author":"TopSpacer","date":"February 22, 2017","format":false,"excerpt":"ESO\u00a0makes a big announcement about a dwarf star with lots of earth-sized planets: Ultracool Dwarf and the Seven Planets Temperate Earth-sized Worlds Found in Extraordinarily Rich Planetary System Astronomers have found a system of seven Earth-sized planets just 40 light-years away. 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