If you are sure there is no around to help you, then you have no choice but to try and raise them. If you lte me know where you live (city, state), I may know of someone who can help you.
Heat is the most important thing until they start to get feathers. I would keep them at 85-90 degrees. You can get a small pet taxi or something similar. At hardware stores you can by a clamp on light that you can use above them. I would use a red bulb as this will provide heat, but not light. This is important at night especially. You'll have to adjust the distance from the light above them to see how the temperature is. At Radio Shack, they do have easy to read temperature gauges.
Most babies sleep and eat. I would use the hand feeding formula at the store. There are pigeon/dove formulas available, but I don't know how easy it would be to find. I would follow the directions on the bag. It needs to somewhat thick, but not too thick that it isn't easy to get out of a syringe or dropper. When the baby is hungry, it should react (feeding response) to you touching the side of the beak. They should open their beak and 'pump' the food in. You can use an eye dropper or a syringe. I find the syringe easier. If a bird does not have a good feeding response, don't force it as it is very easy to choke and kill the baby. The food goes into the crop which you will see fill up at the base of the neck. The crop should be full and should empty well. Babies are prone to crop problems like slow crop emptying, crop infections etc. The baby should be feed when the crop is empty. Most babies do not need feeding overnight as their parents don't feed overnight.
They don't need to be offered water as they will get water from the formula. Just feed them and leave them alone as we don't want them to get used to people. If the babies are crying or 'begging' then there is something wrong as they are usually quiet (so as to not attract attention).
This website talks about raising a different type of dove, but looks helpful.
Again, let me know where you live just to make sure there isn't anyone that can help. This may be difficult to hear but this will not be an easy thing to do - they may not make it. Also, if you take this on and they do survive, they may not be releasable and you may have to raise them. Depending on where you live, it may be considered illegal to have them also as having wildlife is usually not allowed.
Please see the above site and let me know what other questions you have.