Show simple item record

Files in this item


Item metadata

dc.contributor.authorEden, D. J.
dc.contributor.authorMoore, T. J.T.
dc.contributor.authorPlume, R.
dc.contributor.authorRigby, A. J.
dc.contributor.authorUrquhart, J. S.
dc.contributor.authorMarsh, K. A.
dc.contributor.authorPeñaloza, C. H.
dc.contributor.authorClark, P. C.
dc.contributor.authorSmith, M. W.L.
dc.contributor.authorTahani, K.
dc.contributor.authorRagan, S. E.
dc.contributor.authorThompson, M. A.
dc.contributor.authorJohnstone, D.
dc.contributor.authorParsons, H.
dc.contributor.authorRani, R.
dc.identifier.citationEden , D J , Moore , T J T , Plume , R , Rigby , A J , Urquhart , J S , Marsh , K A , Peñaloza , C H , Clark , P C , Smith , M W L , Tahani , K , Ragan , S E , Thompson , M A , Johnstone , D , Parsons , H & Rani , R 2021 , ' Characteristic scale of star formation – I. Clump formation efficiency on local scales ' , Monthly Notices of the Royal Astronomical Society , vol. 500 , no. 1 , pp. 191-210 .
dc.identifier.otherPURE: 271799840
dc.identifier.otherPURE UUID: 4ae16154-e43f-4dab-a6f5-b2b2034ef6ca
dc.identifier.otherScopus: 85097469961
dc.identifier.otherWOS: 000599134600015
dc.descriptionFunding: DJE is supported by an STFC postdoctoral grant (ST/R000484/1).en
dc.description.abstractWe have used the ratio of column densities derived independently from the 850-μm continuum James Clerk Maxwell Telescope Plane Survey and the 13CO/C18O (J = 3 → 2) Heterodyne Inner Milky Way Plane Survey to produce maps of the dense-gas mass fraction (DGMF) in two slices of the Galactic plane centred at l= 30◦ and 40◦. The observed DGMF is a metric for the instantaneous clump formation efficiency (CFE) in the molecular gas. We split the two fields into velocity components corresponding to the spiral arms that cross them, and a two-dimensional power-spectrum analysis of the spiral-arm DGMF maps reveals a break in slope at the approximate size scale of molecular clouds. We interpret this as the characteristic scale of the amplitude of variations in the CFE and a constraint on the dominant mechanism regulating the CFE and, hence, the star formation efficiency in CO-traced clouds.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rightsCopyright 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at
dc.subjectISM: individual objects: W43en
dc.subjectISM: kinematics and dynamicsen
dc.subjectStars: formationen
dc.subjectSubmillimetre: ISMen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subjectAstronomy and Astrophysicsen
dc.subjectSpace and Planetary Scienceen
dc.titleCharacteristic scale of star formation – I. Clump formation efficiency on local scalesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record