| Abstract | The neutral hydrogen has been mapped in the field of the elliptical galaxy NGC 1052 with the Nançay radiotelescope. An H I emission has been detected at ten positions, including the centres of NGC 1035, 1042, 1047, and 1052. The galaxy NGC 1042 has been resolved (half power H I size of about 3') and a rotation is apparent along the E-W direction. NGC 1035 has an H I emission at a velocity lower by about 150 km s-1 from that of the other galaxies and no confusion can be suspected. We confirm the previous H I detections for NGC 1052 and the separation in two velocity components. The narrow low velocity feature is also observed at the position of NGC 1047. This gas could be explained in terms of an interaction between NGC 1042 and NGC 1052. From the wide high velocity component we derive a ratio of the H I diameter to the optical one of about 1 which reveals a large H I extent. A systematic velocity shift, of about 160 km s-1, is measured along the E-W direction, near the major axis, that is not consistent with some previous results. |
