We present high-resolution ( 1 \farcs 8 – 4 \farcs 5 ) CO data of the Virgo spiral galaxy NGC 4569 , obtained using the Nobeyama Millimeter Array .
We found that the molecular gas is highly concentrated in the circumnuclear region with two off-center peaks .
A CO image with the highest angular resolution of 2 \farcs 0 \times 1 \farcs 8 shows that six blobs likely form a circumnuclear elliptical ring ( CER ) with a semi-major axis radius of 720 pc .
The CER shows a strongly twisted velocity field , and the position–velocity ( PV ) diagram shows significant forbidden velocity components .
These kinetic features are understood as being non-circular motion due to a bar-potential .
We found that the CER coincides with the H \alpha bright central core and that the mass ratio of the molecular gas to the dynamical mass is about 18 % .
These results support a gaseous inflow scenario induced by a weak bar potential and self-gravity of the gas .