NGC 4907: This bright Sb spiral, projected at only 19' (~0.38 Mpc)
northeast of the Coma core, is another newly H I detected galaxy. The
H I map shows a H I disk clearly smaller than the optical one, which is
expected for such an H I deficient galaxy: Def_HI_ = 0.99. A striking
feature appears extending through 24" (~8 kpc) to the northwest of the
galaxy, but as this emission appears in only one independent channel it
should be confirmed by future observations.
HMS Note No. 163
Slit on central bar. weak plate, only G-band measured.