I've been reading about super-massive black holes and the methods used to discover them. For the proposed black hole in the Sombrero galaxy (M104) I've read that part of the evidence for the existance of the black hole was the high rotational speed of stars near the center of the galaxy. I've tried googling and cannot find the speed of those stars - I'm interested in finding out just how fast they are going. All the websites I've found just mention that the stars move quickly but do not give the speed.

Does anyone have access to the journal that published the research on M104? Not surprisingly, we don't have it where I live.