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dc.contributor.authorPopham, Robert
dc.contributor.authorKenyon, Scott
dc.contributor.authorHartmann, Lee
dc.contributor.authorNarayan, Ramesh
dc.date.accessioned2019-09-22T14:24:13Z
dc.date.issued1996
dc.identifier.citationPopham, Robert, Scott Kenyon, Lee Hartmann, and Ramesh Narayan. 1996. “Spectra and Line Profiles of FU Orionis Objects: Comparisons between Boundary Layer Models and Observations.” The Astrophysical Journal 473 (1): 422–36. https://doi.org/10.1086/178155.
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41384906*
dc.description.abstractWe present solutions for the accretion disks and boundary layers in pre-main-sequence stars undergoing FU Orionis outbursts. These solutions differ from earlier disk solutions in that they include a self-consistent treatment of the boundary layer region. In a previous paper, Popham showed that these stars should stop accreting angular momentum once they spin up to modest rotation rates. Here we show that for reasonable values of a, these low angular momentum accretion rate solutions fit the spectra and line profiles observed in FU Orionis objects better than solutions with high rates of angular momentum accretion. We find solutions that fit the observations of FU Orionis and V1057 Cygni. These solutions have mass accretion rates of 2 and 1 x 10(-4) M. yr(-1), stellar masses of 0.7 and 0.5 M., and stellar radii of 5.75 and 5.03 R., respectively. They also have modest stellar rotation rates 8-9 x 10(-6) s(-1), comparable to the observed rotation rates of T Tauri stars, and angular momentum accretion rates of zero. This supports our earlier suggestion that FU Orionis outbursts may regulate the rotation rates of T Tauri stars.
dc.language.isoen_US
dc.publisherAmerican Astronomical Society
dash.licenseLAA
dc.titleSpectra and Line Profiles of FU Orionis Objects: Comparisons between Boundary Layer Models and Observations
dc.typeJournal Article
dc.description.versionAccepted Manuscript
dc.relation.journalThe Astrophysical Journal
dash.depositing.authorNarayan, Ramesh::dc7afe5d74d62c7b451015317ea2ccbe::600
dc.date.available2019-09-22T14:24:13Z
dash.workflow.comments1Science Serial ID 95143
dc.identifier.doi10.1086/178155
dash.source.volume473;1
dash.source.page422-436


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