What is a reproduction? Does a shot of a piece of abstract art constitute an "objet trouve"? Well, I'm pretty sure it depends. And as all this certainly contains some degree of self-reference I'm also pretty sure that if you do it "right" you could create some imagery that simply is publishable.
But enough of the theory, I just incidentally went on a tangent before presenting two images I captured because: they are images of other people's "art". We may now philosophize endlessly but in the end all that counts is: Are these images worth your time looking at it? I (at least) hope so. Enjoy!
But to come back to the initial question: Are photographs of abstract art abstract art? In this case I really don't think so. But "objet trouve"? Yeah, well, maybe ;-)