All Tables

Table 1: Derived upper limits on O₂ column density relative to H₂. The 1 channel rms noise is given in the $T_{\rm A}$ scale, but all computations have been done assuming a 90% coupling to the main beam. Resolution is 0.3 km^-1 except for G0.26-0.01 (2.5 km^-1). 6.8(14) means $6.8 \times 10^{14}$ . The "Ref.'' column provides references for the C¹⁸O data.