dc.contributor.author | Rozas, M. | |
dc.contributor.author | Knapen, J. | |
dc.contributor.author | Beckman, J.E. | |
dc.date.accessioned | 2009-07-24T13:01:52Z | |
dc.date.available | 2009-07-24T13:01:52Z | |
dc.date.issued | 1998 | |
dc.identifier.citation | Rozas , M , Knapen , J & Beckman , J E 1998 , ' Bars and the symmetry of star formation patterns in the discs of spiral galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 301 , no. 3 , pp. 631-639 . https://doi.org/10.1046/j.1365-8711.1998.01945.x | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | PURE: 155857 | |
dc.identifier.other | PURE UUID: 8a33d0a2-75c3-4dbe-9738-d5a8ec5dba44 | |
dc.identifier.other | dspace: 2299/3715 | |
dc.identifier.other | Scopus: 0008599399 | |
dc.identifier.uri | http://hdl.handle.net/2299/3715 | |
dc.description | ‘The definitive version is available at www.blackwell-synergy.com '. Copyright Blackwell Publishing. DOI: 10.1046/j.1365-8711.1998.01945.x [Full text of this article is not available in the UHRA] | |
dc.description.abstract | We present a test for the degree of symmetry in the distribution of the Hα brightness along the arms of a sample of spiral galaxies. The test consists of deriving the cross-correlation function of the Hα brightness as a function of curvilinear distance along pairs of opposed arms, after unfolding the arms geometrically. Our results reveal a significantly greater degree of symmetry in the non-barred population than in the barred. We derive parameters for both bar strength and bar ellipticity, and compare these with the derived cross-correlations to strengthen this conclusion. We suggest that density waves are a probable cause for the appearance of global, i.e. disc-wide, two-fold symmetry in spiral discs. Comparison with published work on abundance gradients in the discs of barred and non-barred galaxies indicates that, as for the abundances, mixing in the spiral disc as a result of the bar potential may well be responsible for our observation that stronger bars are related to reduced two-fold symmetry in the distribution of star-forming regions along the spiral arms. | en |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.title | Bars and the symmetry of star formation patterns in the discs of spiral galaxies | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | https://doi.org/10.1046/j.1365-8711.1998.01945.x | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |