Kinematic and photometric properties of the stars. Left panel: angular momentum and orbital energy of the observed stars and the comparison stars. We also show the distribution of all stars in Gaia EDR3 with good astrometry (a relative parallax uncertainty smaller than 20%) and Gaia DR2 radial velocity. The blue dotted lines represent the Sequoia selection from Koppelman et al. (2019). Stars in the orange box are used to define the chemical abundance trends of Gaia-Enceladus. NS 10 and R 17 stars within this box are shown with filled symbols, while those outside of it are shown with open symbols. Right panel: Gaia EDR3 color-magnitude diagram of the program stars. We also plotted four PARSEC isochrones with the age of 12 Gyr and [Fe/H] = −2.0, −1.5, −1.0, and −0.5 (from left right). We note that only stars with available extinction estimates from Green et al. (2019) are plotted for the NS 10 and R 17 samples.