The Stellar Populations of Lyman Break Galaxies at $z\sim 5$

We present the results of Spectral Energy Distribution (SED) fitting analysis for Lyman Break Galaxies (LBGs) at $z\sim 5$ in the GOODS-N and its flanking fields. From the SED fitting for $\sim 100$ objects, we found that the stellar masses range from ${10}^8$ to ${10}^{11}{M}_{\odot }$ with a median value of $4\times {10}^9{M}_{\odot }$. By using the large sample of galaxies at $z\sim 5$, we construct the stellar mass function (SMF) with incompleteness corrections. By integrating down to ${10}^8{M}_{\odot }$, the cosmic stellar mass density at $z\sim 5$ is calculated to be $7\times {10}^6{M}_{\odot }{\text{Mpc}}^{-3}$.