In a modern age constructed tournament are the ATA's (i.e. the ones that been issued for HoT and on) legal?

Comprehensive Tournament Rules document says:

2.2 Modern Age Rules: Modern Age events restrict the player’s force to being made up of only characters and possibly objects. All characters must be from the Modern Age sets (listed above) and objects must either be standard objects or special objects from the Modern Age sets. Alternate Team Ability cards are permitted in Modern Age events regardless of the set they were originally printed. Between the event format (see below) and special rules (established in the event description), other rules may be applied to the force construction.

Thanks for the quick response.