Journal ArticleDOI
Evolution of Debris Disks
TLDR
In this article, a review describes the theoretical framework within which debris disk evolution takes place and shows how that framework has been constrained by observations, including infrared photometry of large numbers of debris disks, providing snapshots of the dust present at different evolutionary phases.Abstract:
Circumstellar dust exists around several hundred main sequence stars. For the youngest stars, that dust could be a remnant of the protoplanetary disk. Mostly it is inferred to be continuously replenished through collisions between planetesimals in belts analogous to the Solar System’s asteroid and Kuiper belts, or in collisions between growing protoplanets. The evolution of a star’s debris disk is indicative of the evolution of its planetesimal belts and may be influenced by planet formation processes, which can continue throughout the first gigayear as the planetary system settles to a stable configuration and planets form at large radii. Evidence for that evolution comes from infrared photometry of large numbers of debris disks, providing snapshots of the dust present at different evolutionary phases, as well as from images of debris disk structure. This review describes the theoretical framework within which debris disk evolution takes place and shows how that framework has been constrained by observations.read more
Citations
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Journal ArticleDOI
Protoplanetary Disks and Their Evolution
Jonathan Williams,Lucas A. Cieza +1 more
TL;DR: A review of the outer parts, beyond 1 AU, of protoplanetary disks with a focus on recent IR and (sub)millimeter results can be found in this paper.
Journal ArticleDOI
A Giant Planet Imaged in the Disk of the Young Star β Pictoris
Anne-Marie Lagrange,Mickael Bonnefoy,Gael Chauvin,Daniel Apai,David Ehrenreich,Anthony Boccaletti,Damien Gratadour,Daniel Rouan,David Mouillet,Sylvestre Lacour,M. Kasper +10 more
TL;DR: It is shown that the ~10-million-year-oldβ Pictoris system hosts a massive giant planet, β Pictoris b, located 8 to 15 astronomical units from the star, which confirms that gas giant planets form rapidly within disks and validates the use of disk structures as fingerprints of embedded planets.
Journal ArticleDOI
ALMA Survey of Lupus Protoplanetary Disks. I. Dust and Gas Masses
Megan Ansdell,Jonathan Williams,N. van der Marel,John M. Carpenter,G. Guidi,Michiel R. Hogerheijde,G. S. Mathews,Carlo F. Manara,Anna Miotello,A. Natta,A. Natta,Isa Oliveira,Marco Tazzari,Leonardo Testi,Leonardo Testi,E. F. van Dishoeck,S. E. van Terwisga +16 more
TL;DR: In this paper, the Atacama Large Millimeter/Submillimeter Array (ALMA) was used to survey 89 protoplanetary disks around stars with M∗ > 0.1 M in the young (1-3 Myr), nearby (150-200 pc) Lupus complex.
Journal ArticleDOI
SCUBA-2: the 10 000 pixel bolometer camera on the James Clerk Maxwell Telescope
Wayne S. Holland,Wayne S. Holland,D. Bintley,E. L. Chapin,Antonio Chrysostomou,Gary R. Davis,Jessica Dempsey,William Duncan,William Duncan,Michel Fich,Per Friberg,Mark Halpern,Kent D. Irwin,Tim Jenness,B. D. Kelly,M. J. MacIntosh,E. I. Robson,Douglas Scott,Peter A. R. Ade,Eli Atad-Ettedgui,David S. Berry,Simon C. Craig,Xiaofeng Gao,Andy Gibb,Gene C. Hilton,Matthew I. Hollister,Jan Kycia,David Lunney,H. McGregor,David Montgomery,William Parkes,Remo P. J. Tilanus,Joel N. Ullom,Craig Walther,Anthony J. Walton,Adam Woodcraft,Mandana Amiri,David Atkinson,B. Burger,Timothy C. Chuter,I. M. Coulson,William B. Doriese,Camelia Dunare,Frossie Economou,Michael D. Niemack,Harriet Parsons,Carl D. Reintsema,B. Sibthorpe,Ian Smail,R. V. Sudiwala,H. Thomas +50 more
TL;DR: SCUBA-2 as mentioned in this paper is an innovative 10000 pixel bolometer camera operating at submillimetre wavelengths on the James Clerk Maxwell Telescope (JCMT), which has the capability to carry out wide-field surveys to unprecedented depths, addressing key questions relating to the origins of galaxies, stars and planets.
Journal ArticleDOI
The Ages of Stars
TL;DR: A summary of the available techniques for age-dating stars and ensembles of stars, their realms of applicability, and their strengths and weaknesses can be found in this article, where the authors focus on low-mass stars.
References
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Journal ArticleDOI
The fossilized size distribution of the main asteroid belt
William F. Bottke,Daniel D. Durda,David Nesvorný,Robert Jedicke,Alessandro Morbidelli,David Vokrouhlický,Hal Levison +6 more
TL;DR: In this paper, a collisional evolution model (CoEM) was proposed to model the evolution of the main belt of the Earth and the Moon over the last 3 Gyr.
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Journal ArticleDOI
A Spitzer Space Telescope Study of Disks in the Young σ Orionis Cluster
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Journal ArticleDOI
Planetesimal formation by gravitational instability
TL;DR: In this article, the formation of planetesimals via the gravitational instability of solids that have settled to the midplane of a circumstellar disk was investigated, and it was shown that the mixing becomes ineffective when the surface density ratio of soloids to gas exceeds a critical value.
Journal ArticleDOI
The HARPS search for southern extra-solar planets - XVII. Super-Earth and Neptune-mass planets in multiple planet systems HD 47 186 and HD 181 433
François Bouchy,Michel Mayor,C. Lovis,Stéphane Udry,Willy Benz,Jean-Loup Bertaux,X. Delfosse,C. Mordasini,Francesco Pepe,D. Queloz,Damien Ségransan +10 more
TL;DR: In this article, the authors reported the detection of two new multiple planet systems orbiting solar-like stars HD 47 186 and HD 181 433, which increased to 20 the number of close-in low-mass exoplanets (below 0.1 M JUP) and strengthen the fact that 80% of these planets are in multiple planetary systems.