Direct measurements of carbon and sulfur isotope ratios in the Milky Way

Y. T. Yan, C. Henkel, C. Kobayashi +7

With the IRAM 30 meter telescope, we performed observations of the $J$ = 2-1 transitions of CS, C${}^{33}$S, C${}^{34}$S, C${}^{36}$S, ${}^{13}$CS, ${}^{13}$C${}^{33}$S, and ${}^{13}$C${}^{34}$S a…