Uniform Silicon Isotope Ratios Across the Milky Way Galaxy

Nathaniel N. Monson, Mark R. Morris, Edward D. Young

We report the relative abundances of the three stable isotopes of silicon, ${}^{28}$Si, ${}^{29}$Si and ${}^{30}$Si, across the Galaxy using the $v=0,J=1\to 0$ transition of silico…