The fourteen paintings you identified were all done by the late (and great) Mike Minor for the third season. They appear in all the places you indicated. (Many of the same pictures also decorate the rec room in "Day of the Dove" and "The Way to Eden." There are also two paintings that were used to decorate Kirk's quarters, too--probably best seen in "Wink of an Eye." They are on the wall that Kirk faces as he sits at his little desk.)
In addition to the fourteen astronomical pictures you spotted and the two that decorate Kirk's quarters, Mike also did three "alien life form" paintings visible in Sickbay--for a total of twenty paintings.