This leads the researchers to suspect that a white dwarfstar strayed too close to the intermediate-mass black hole and was ripped apart by tidal forces.
这导致研究人员怀疑一个迷途的白矮星离某个中等质量黑洞太接近了，并受其潮汐引力的撕扯。
2
Since a 7 - solar - mass is too large to be a white dwarf or neutron star , it must be a black hole.
因为有着7个太阳质量的星体不可能是白矮星或中于星，所以它一定是黑洞。
3
It also gives a general picture of their origin in the interplanetary dust of gas, their stable evolution in the stage of main-sequence and their end with White Dwarf, Neution Star and Black Hole.