With IRAM-30m/HERA, we have detected CO(2-1) gas complexes within 30arcsec (100pc) from the center of M31 that amount to a minimum total mass of 4.2x10^4^M_{sun}_ (one third of...
This is one of the lower-quality surveys, with varying noise and some questionable baselines. In addition, two different filterbanks were used over the course of the survey, one with 1.3 km/s channels
