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GG Tau: the ringworld and beyond
The Astronomy and Astrophysics Review ( IF 16.000 ) Pub Date : 2016-01-11 , DOI: 10.1007/s00159-015-0091-5
Anne Dutrey; Emmanuel Di Folco; Tracy Beck; Stéphane Guilloteau

In binary stellar systems, exoplanet searches have revealed planetary mass companions orbiting both in circumstellar and in circumbinary orbits. Modelling studies suggest increased dynamical complexity around the young stars that form such systems. Circumstellar and circumbinary disks likely exhibit different physical conditions for planet formation, which also depends on the stellar separation. Although binaries and higher order multiple stars are relatively common in nearby star-forming regions, surprisingly few systems with circumbinary distributions of proto-planetary material have been found. With its spectacular ring of dust and gas encircling the central triple star, one such system, GG Tau A, has become a unique laboratory for investigating the physics of circumsystem gas and dust evolution. We review here its physical properties.
更新日期:2016-01-11

 

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