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dc.contributor.authorSheehan, Patrick D.
dc.contributor.authorEisner, Josh A.
dc.date.accessioned2018-05-16T16:10:14Z
dc.date.available2018-05-16T16:10:14Z
dc.date.issued2018-04-10
dc.identifier.citationThe Astrophysical Journal, 857:18 (7pp), 2018 April 10en_US
dc.identifier.issn1538-4357
dc.identifier.doi10.3847/1538-4357/aaae65
dc.identifier.urihttp://hdl.handle.net/10150/627634
dc.description.abstractWe present the highest spatial resolution Atacama Large Millimeter/submillimeter Array (ALMA) observations to date of the Class I protostar GY 91 in the rho Ophiuchus L1688 molecular cloud complex. Our 870 mu m and 3 mm dust continuum maps show that the GY 91 disk has a radius of similar to 80 au, and an inclination of similar to 40 degrees, but most interestingly that the disk has three dark lanes located at 10, 40, and 70 au. We model these features assuming they are gaps in the disk surface density profile and find that their widths are 7, 30, and 10 au. These gaps bear a striking resemblance to the gaps seen in the HL Tau disk, suggesting that there may be Saturn-mass planets hiding in the disk. To constrain the relative ages of GY 91 and HL Tau, we also model the disk and envelope of HL Tau and find that they are of similar ages, although GY 91. may be younger. Although snow lines and magnetic dead zones can also produce dark lanes, if planets are indeed carving these gaps then Saturn-mass planets must form within the first similar to 0.5 Myr of the lifetime of protoplanetary disks.en_US
dc.description.sponsorshipNSF AAG [1311910]en_US
dc.language.isoenen_US
dc.publisherIOP PUBLISHING LTDen_US
dc.relation.urlhttp://stacks.iop.org/0004-637X/857/i=1/a=18?key=crossref.40e3b8738a3ef51405e46d95ed8834e5en_US
dc.rights© 2018. The American Astronomical Society. All rights reserveden_US
dc.subjectplanets and satellites: formationen_US
dc.subjectprotoplanetary disksen_US
dc.subjectstars: formationen_US
dc.subjectstars: individual (GY 91)en_US
dc.titleMultiple Gaps in the Disk of the Class I Protostar GY 91en_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USAen_US
dc.identifier.journalASTROPHYSICAL JOURNALen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleThe Astrophysical Journal
dc.source.volume857
dc.source.issue1
dc.source.beginpage18
refterms.dateFOA2018-05-16T16:10:15Z


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