3 ms·
So the rate of star creation over time is b ^ x , where 0 < b <= 0.5 (i.e. exponential decrease) ? Or perhaps e ^ (-bx) , where x >= 1 (i.e. exponential decay)
by jaza 6y ago
So the rate of star creation over time is b ^ x , where 0 < b <= 0.5 (i.e. exponential decrease) ? Or perhaps e ^ (-bx) , where x >= 1 (i.e. exponential decay) ? Sounds logical enough, considering that there was a lot more raw material for star creation immediately after the big bang, than there has been ever since then.
- graerg 6y agoThis is colloquially referred to as the "Madau plot": https://ned.ipac.caltech.edu/level5/March14/Madau/Figures/fig9a.jpg https://ned.ipac.caltech.edu/level5/March14/Madau/Figures/fi...