作者: J. P. Anderson , P. A. James , F. Förster , S. González-Gaitán , S. M. Habergham
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摘要: We present constraints on supernovae type Ia (SNe Ia) progenitors through an analysis of the environments found at explosion sites 102 events within star-forming host galaxies. Hα and GALEX near-UV images are used to trace on-going recent star formation (SF), while broad band B,R, J,K imaging is also analysed. Using pixel statistics we find that SNe show lowest degree association with emission all supernova types. It they do not emission. As latter traces SF timescales less than 100Myr, this rules out any extreme ‘prompt’ delay-times as dominant progenitor channel Ia. best B-band light distribution their This implies population galaxies dominated by relatively young progenitors. Splitting (B-V) colours maximumlight, ‘redder’ a higher H II regions more centrally hosts. discuss possible explanations result in terms line sight extinction effects. No evidence for correlations between SN stretch environment properties observed. Key words: supernovae: general, galaxies: