Circumbinary Planet Formation In The Kepler-16 System. II. A Toy Model For In Situ Planet Formation Within A Debris Belt

Simple item page
dc.contributor.utaustinauthorMeschiari, Stefanoen_US
dc.creatorMeschiari, Stefanoen_US
dc.date.accessioned2016-04-28T19:42:24Z
dc.date.available2016-04-28T19:42:24Z
dc.date.issued2014-07en
dc.description.abstractRecent simulations have shown that the formation of planets in circumbinary configurations (such as those recently discovered by Kepler) is dramatically hindered at the planetesimal accretion stage. The combined action of the binary and the protoplanetary disk acts to raise impact velocities between kilometer-sized planetesimals beyond their destruction threshold, halting planet formation within at least 10 AU from the binary. It has been proposed that a primordial population of "large" planetesimals (100 km or more in size), as produced by turbulent concentration mechanisms, would be able to bypass this bottleneck; however, it is not clear whether these processes are viable in the highly perturbed circumbinary environments. We perform two-dimensional hydrodynamical and N-body simulations to show that kilometer-sized planetesimals and collisional debris can drift and be trapped in a belt close to the central binary. Within this belt, planetesimals could initially grow by accreting debris, ultimately becoming "indestructible" seeds that can accrete other planetesimals in situ despite the large impact speeds. We find that large, indestructible planetesimals can be formed close to the central binary within 10(5) yr, therefore showing that even a primordial population of "small" planetesimals can feasibly form a planet.en_US
dc.description.departmentMcDonald Observatoryen_US
dc.description.sponsorshipW. J. McDonald Postdoctoral Fellowshipen_US
dc.identifierdoi:10.15781/T2MR6H
dc.identifier.Filename2014_07_circumbinaryplanet.pdfen_US
dc.identifier.citationMeschiari, Stefano. "Circumbinary Planet Formation in the Kepler-16 System. II. A Toy Model for In Situ Planet Formation within a Debris Belt." The Astrophysical Journal, Vol. 790, No. 1 (Jul., 2014): 41.en_US
dc.identifier.doi10.1088/0004-637x/790/1/41en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/35139
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journalen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectplanets and satellites: dynamical evolution and stabilityen_US
dc.subjectplanets anden_US
dc.subjectsatellites: formationen_US
dc.subjectprimordial solar nebulaen_US
dc.subjectbinary-star systemsen_US
dc.subjectgas dragen_US
dc.subjectprotoplanetaryen_US
dc.subjectdisksen_US
dc.subjectcircumstellar disksen_US
dc.subjectalpha centaurien_US
dc.subjectgiant planetsen_US
dc.subjectplanetesimalsen_US
dc.subjectaccretionen_US
dc.subjectmigrationen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleCircumbinary Planet Formation In The Kepler-16 System. II. A Toy Model For In Situ Planet Formation Within A Debris Belten_US
dc.typeArticleen_US

Access full-text files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
2014_07_circumbinaryplanet.pdf
Size:
2.35 MB
Format:
Adobe Portable Document Format
Download

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.65 KB
Format:
Plain Text
Description:
Download

Collections

UT Faculty/Researcher Works