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Fig. 11


Distributions of the delay times adopted in our modelling, selected from the family in Greggio (2005). SD (green solid): a single degenerate model which assumes Chandrasekhar mass explosions; SD1(green dashed): the same as SD up to a delay time of 0.5 Gyr, proportional to the inverse of the delay time onward; DDC (blue): a DD CLOSE model with parameters βa = −0.9,τn,x = 0.6; DDW (red): a DD WIDE model with parameters βa = 0,τn,x = 1. See Greggio (2005) for a description of the models. The DTD models are normalised to 1 over a range of delay times from 0 to 13 Gyr.

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