Chemistry of C2S and C3S in L1544 with NSRT

Abstract Sulfur-bearing species are frequently used to investigate the physical structure of star-forming regions in the interstellar medium, yet the underlying sulfur chemistry in these regions remains poorly understood. Hence, further study of S-bearing species is of fundamental importance as it can help us to imporve our udnerstanding of physical evolution of star-forming regions. We present observations of C2S and C3S in L1544 acquired with the Nanshan-26 meter radio telescope (NSRT) along with simulations of their chemical behavior of the using a one-dimensional physical model. The simulated results reveal significant radial variations in the column densities of C2S and C3S. Additionally, we found that the column densities of both C2S and C3S are sensitive to the cosmic ray ionization rate at several radial positions, while our chosen range of C/O values has a comparatively minimal impact in L1544.