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• W3043670610 abstract "Aims. We attempt to constrain progenitors of the different types of supernovae from their spatial distributions relative to star formation regions in their host galaxies, as traced by Hα  + [Nii] line emission.Methods. We analyse 63 supernovae which have occurred within galaxies from our Hα  survey of the local Universe. Three statistical tests are used, based on pixel statistics, Hα  radial growth curves, and total galaxy emission-line fluxes.Results. Many type II supernovae come from regions of low or zero emission line flux, and more than would be expected if the latter accurately traces high-mass star formation. We interpret this excess as a 40% “Runaway” fraction in the progenitor stars. Supernovae of types Ib and Ic do appear to trace star formation activity, with a much higher fraction coming from the centres of bright star formation regions than is the case for the type II supernovae. Type Ia supernovae overall show a weak correlation with locations of current star formation, but there is evidence that a significant minority, up to about 40%, may be linked to the young stellar population. The radial distribution of all core-collapse supernovae (types Ib, Ic and II) closely follows that of the line emission and hence star formation in their host galaxies, apart from a central deficiency which is less marked for supernovae of types Ib and Ic than for those of type II. Core-collapse supernova rates overall are consistent with being proportional to galaxy total luminosities and star formation rates; however, within this total the type Ib and Ic supernovae show a moderate bias towards more luminous host galaxies, and type II supernovae a slight bias towards lower-luminosity hosts." @default.
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• W3043670610 date "2006-07-01" @default.
• W3043670610 modified "2023-09-23" @default.
• W3043670610 title "The Hα Galaxy Survey. III. Constraints on supernova progenitors from spatial correlations with Hα emission" @default.
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