Compact Hierarchical Triples (CHTs) are systems where the triple star orbits the inner binary in an orbit of period less than 1000 d. Population synthesis shows that around 70% of all triples will undergo some kind of interaction (mass transfer, mergers) in their lifetime. The short dynamic timescales expected from CHTs can help us to observationally constrain the dynamical processes that affect the evolution of a triple system. Low-mass CHTs can also act as a bridge to understanding the formation of planetary architectures and star formation at small scales. While there have been attempts to understand the formation mechanisms, there has been no detailed study to see the impact of metallicity or dynamical interactions in these systems' formation and final state.

We present a sample of CHTs with a complete set of orbital, stellar, and atmospheric parameters. We use time-series spectroscopy and space-based photometry of eclipsing binaries in the CHTs to extract all the parameters with the help of state-of-the-art analysis. We use the stellar parameters to constrain the evolution of these systems.  This extensive set of parameters also allows us to look at the age and metallicity dependency of CHT parameters. Using these distributions, we try to find if the formation of CHTs is any special from other triples or multiples.