Dynamical timescale of precollapse evolution inferred from chemical distribution in the Taurus Molecular Cloud-1 (TMC-1) filament

Yunhee Choi, Jeong-Eun Lee, Tyler L. Bourke +1

We present observations and analysis of the low-mass star-forming region, Taurus Molecular Cloud-1 (TMC-1). CS ($J$=2-1)/N${}_2$H${}^{+}$ ($J$=1-0) and C${}^{17}$O ($J$=2-1)/C${}^{18}$O ($J$…