Material stripped from the galaxy during its collision with a smaller galaxy (seen in the upper left corner of the larger interaction partner) forms a long tidal tail. (sciencedaily.com)
The galaxy in the upper part of the image contains very pronounced tidal tails — long, extended ribbons of gas, dust and stars. (sciencedaily.com)
The host galaxy has faint arc - shaped features called tidal tails, produced by a gravitational tug between two colliding galaxies. (sciencedaily.com)