As amusing as sending unarmed Scientists into a potentially hostile environment might be I am inclined to suggest that waiting for the Marines would be a good idea. Both to cut down on risk and to actually ensure we have the capacity to do so again in the future should we find more sites of Xeno-Archaeology.
It's a high-risk, high-reward option. The NPRs start way ahead of us in Tech, so gaining an early advantage would be a major factor. Suffering an early loss would be painful, of course.
Perhaps I should explain to the other players just how Teams work.
You can assemble any five individuals into a Team. Normally, you would pick people with decent-to-excellent scores in the required attribute... in this case, Xenology Skill. The Team uses the total bonus (the collective sum of the bonus of each Team member) as a DRM on its chances of producing results. If you made up a power-hitting team of five +20% dudes, you would get a +100% modifier on your attempt. The better the Team, the less likely that they will give up after failing an attempt. Success gives you some reward... in the case of Xenology, it might be just a hidden stash of minerals, or possibly some advanced ship components that you cannot make with your current tech level, or an instantly researched new technology one or two levels more advanced than your current level, or it might even be an Alien technology that is totally outside your tech-tree and is not normally researchable, regardless of your own research progress. Success will also usually improve the Xenology skill of the Team members.
Attempts often take a year or so, sometimes longer. Failure might just mean wasted time... or it might mean death.
In order to join a Team, the character must be currently un-assigned. Ship captains who wanted to go along on the "away team" would have to turn over their field commands to a replacement officer. Research scientists who wanted to take part in the investigation... Bo Mosberg has a Xenology skill of +20, for example... would either have to cancel their current research project, or else schedule the away mission to take place AFTER they complete their current research.
Should I provide a list of all the Paradox characters who have high Xenology scores?
EDIT: First off, the highest-scoring team that we could possibly assemble... by using mostly NPC research scientists and by stripping everyone with high Xeno scores out of their current job... would have no members with a score lower than +20%. Out of our player characters, only Bo Mosberg could go on that team while still giving us the maximum possible modifier.
Of course, that would mean sending our best research scientists into danger, and possibly crippling our research efforts for years to come.
If we were willing to settle for a less powerful away team (in order to preserve our non-player research specialists for actually doing research), then we could send some of our own guys along. These Paradox characters have decent-to-good Xeno scores:
Bo Mosberg +20%
Avernite +15%
Polar Mongoose +10%
Coinneach +10%
Stamasd +10%