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dc.contributor.authorRodgers-Lee, Donna
dc.contributor.authorScholz, Alexander
dc.contributor.authorNatta, Antonella
dc.contributor.authorRay, Tom
dc.identifier.citationRodgers-Lee , D , Scholz , A , Natta , A & Ray , T 2014 , ' The Herschel view of circumstellar discs : a multiwavelength study of Chamaeleon-I ' , Monthly Notices of the Royal Astronomical Society , vol. 443 , no. 2 , pp. 1587-1600 .
dc.identifier.otherPURE: 145081696
dc.identifier.otherPURE UUID: 93b2ab81-3422-4f56-a998-66eca1a89519
dc.identifier.otherBibCode: 2014MNRAS.443.1587R
dc.identifier.otherScopus: 84905660106
dc.identifier.otherWOS: 000340436800051
dc.description.abstractWe present the results of a multiwavelength study of circumstellar discs around 44 young stellar objects in the 3 myr old nearby Chamaeleon-I star-forming region. In particular, we explore the far-infrared/submm regime using Herschel fluxes. We show that Herschel fluxes at 160–500 μm can be used to derive robust estimates of the disc mass. The median disc mass is 0.005 M⊙ for a sample of 28 Class IIs and 0.006 M⊙ for 6 transition discs (TDs). The fraction of objects in Chamaeleon-I with at least the ‘minimum mass solar nebula’ is 2–7 per cent. This is consistent with previously published results for Taurus, IC348 and ρ Oph. Diagrams of spectral slopes show the effect of specific evolutionary processes in circumstellar discs. Class II objects show a wide scatter that can be explained by dust settling. We identify a continuous trend from Class II to TDs. Including Herschel fluxes in this type of analysis highlights the diversity of TDs. We find that TDs are not significantly different from Class II discs in terms of far-infrared luminosity, disc mass or degree of dust settling. This indicates that inner dust clearing occurs independently from other evolutionary processes in the discs.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rights© 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Societyen
dc.subjectTechniques: photometricen
dc.subjectCircumstellar matteren
dc.subjectStars: formationen
dc.subjectStars: pre-main-sequenceen
dc.subjectInfrared: starsen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleThe Herschel view of circumstellar discs : a multiwavelength study of Chamaeleon-Ien
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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