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dc.contributor.authorStassun, Keivan G.
dc.contributor.authorScholz, Aleks
dc.contributor.authorDupuy, Trent J.
dc.contributor.authorKratter, Kaitlin M.
dc.identifier.citationStassun , K G , Scholz , A , Dupuy , T J & Kratter , K M 2014 , ' The impact of chromospheric activity on observed initial mass functions ' , Astrophysical Journal , vol. 796 , no. 2 , 119 .
dc.identifier.otherPURE: 158823195
dc.identifier.otherPURE UUID: f8d8fcdb-767e-4444-971e-9c068e39bd74
dc.identifier.otherBibCode: 2014ApJ...796..119S
dc.identifier.otherScopus: 84911407387
dc.identifier.otherWOS: 000344878900048
dc.descriptionK.G.S. acknowledges NSF grants PAARE AST-0849736 and AAG AST-1109612. The work of A.S. for this paper has been supported by the Science Foundation Ireland through the grant 10/RFP/AST278.en
dc.description.abstractUsing recently established empirical calibrations for the impact of chromospheric activity on the radii, effective temperatures, and estimated masses of active low-mass stars and brown dwarfs, we reassess the shape of the initial mass function (IMF) across the stellar/substellar boundary in the Upper Sco star-forming region (age ~ 5-10 Myr). We adjust the observed effective temperatures to warmer values using the observed strength of the chromospheric Hα emission, and redetermine the estimated masses of objects using pre-main-sequence evolutionary tracks in the H-R diagram. The effect of the activity-adjusted temperatures is to shift the objects to higher masses by 3%-100%. While the slope of the resulting IMF at substellar masses is not strongly changed, the peak of the IMF does shift from ≈0.06 to ≈0.11 M ⊙. Moreover, for objects with masses
dc.relation.ispartofAstrophysical Journalen
dc.rights© 2014. The American Astronomical Society. All rights reserved.en
dc.subjectbrown dwarfsen
dc.subjectstars: activityen
dc.subjectstars: fundamental parametersen
dc.subjectstars: low-massen
dc.subjectstars: luminosity functionen
dc.subjectmass functionen
dc.subjectQC Physicsen
dc.subjectQB Astronomyen
dc.titleThe impact of chromospheric activity on observed initial mass functionsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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