IOAA 2011, Теория, кратки задачи — Задача 11

Short theoretical questions · Each question max 10 points

Условие

11. Based on the spectrum of a galaxy with redshift $z = 6.03$ it was determined that the age of the

stars in the galaxy is from 560 to 600 million years. At what $z$ did the epoch of star formation occur in this galaxy? Assume that the current age of the Universe is $t_0 = 13.7 \times 10^9$ years and that the rate of expansion of the Universe is given by a flat cosmological model with cosmological constant $\Lambda = 0$. (In such a model the scale factor $R \propto t^{2/3}$, where $t$ is the time since the Big Bang.)

Решение

Оригинал в Архива: 2011_Short_Questions.pdf