M 33 X-7

M33 X-7 is a black hole binary system in the Triangulum Galaxy. The system is made up of a stellar-mass black hole and a companion star. The black hole in M33 X-7 has an estimated mass of 15.65 times that of the Sun (M☉) (formerly the largest known stellar black hole, though this has now been superseded amongst electromagnetically-observed black holes by an increased mass estimate for Cygnus X-1, and also by many of the LVK-detected binary black hole components). The total mass of the system is estimated to be around 85.7 M☉, which would make it the most massive black hole binary system. The black hole is consuming its partner, a 70 solar mass blue giant star.
File:Scr001437.jpg|M 33 X-7 B
File:Scr001438.jpg|M 33 X-7 A not up close
File:Scr001439.jpg|M 33 X-7 A up close
Category:Stars
Category:Real objects
Category:Objects