Planenut321 is correct. Astraeus are only the latest operator to work with Palmair who really are a virtual airline in most respects. (albeit a decent one).
I'm not sure how the Astreaus tie-up came about as they had to buy the B737-500 especially and they're not too big in the leisure business. May be they thought they could lease out the plane when Palmair didn't need it but I haven't seen much evidence of that.
I'd really like to see Bournemouth and Palmair survive in the long-term but the formula for both would have to change. Given the continuing Thomson presence at Bournemouth over the winter, they could be a good place to start but Thomas Cook might take up the reins if they decide to give Bournemouth a chance.