An Eccentric-Disk Model for the Nucleus of M31
An Eccentric-Disk Model for the Nucleus of M31
The nucleus of M31 may be a thick eccentric disk, composed of stars traveling on nearly Keplerian orbits around a black hole or other dark compact object. This hypothesis reproduces most of the features seen in HST photometry of the center of M31; in particular the bright off-center source P1 …