OBSERVATIONS OF THE H213CO H213CO LINES TOWARD OMC-1
We observed the 2 mm ortho and para transitions of H213CO H213CO toward the Orion Molecular Cloud-1 using the 12 m NRAO telescope at Kitt Peak. Total column densities of 3×1014 3×1014 and 2.8×1012cm−2 2.8×1012cm−2 have been derived at KL and the approximately 3 are minute north from the KL (3N) position, respectively. We discuss the abundances, ortho/para ratios and its chemical implications.