Binary star revolving arround center of mass

[point ohms]

why the binary star revolving around center of mass ?
could type 2 supernova ever had a stellar wind after explosion ?

 

[mathman]

Since there is no such thing as absolute motion, the binary star motion concerns these stars relative to each other.

 

[Drakkith]

could type 2 supernova ever had a stellar wind after explosion ?

From the neutron star/black hole? Not in the traditional sense of what a stellar wind is.