Role of the Thirty meter telescope and upcoming massive spectroscopic surveys in the studies of Stellar archeology

I will present an overview of the science capability of the Thirty meter telescope (TMT) and India’s contribution to the technical development and building of the science instruments and discuss some of the massive spectroscopic surveys on 4-8m telescopes (e.g. DESI, 4MOST, MOONS, PFS and MSE ) that will be available when TMT becomes operational.

I will also discuss some of the most pertinent problems in the field of stellar archeology:  the nature of the First stars, formation, and assembly of the early Galaxy and its substructures, including its Globular clusters.  Precision astrometry (from GAIA) and photometry from space facilities (e.g TESS, WFIRST), along with chemical abundances of key elements will enable the chemo-dynamical evolution of the stellar population in Milky Way and nearby galaxies. TMT with its high sensitivity and spatial resolution can probe stellar populations towards the center of  Milky Way up to the RGB stars in the Virgo clusters, these studies will open up new frontiers in the field of galactic archeology.