A high-resolution spectroscopic study of two new Na- and Al-rich field
  giants -- likely globular cluster escapees in the Galactic halo
  The stars SDSS J064655.6+411620.5 and SDSS J193712.01+502455.5 are relatively
bright stars that were initially observed as part of the SDSS/MARVELS
pre-survey. They were selected, on the basis of their weak CH $G$-bands, along
with a total of 60 others, in the range of halo globular cluster metallicities
for high-resolution spectroscopic follow-up as a part of the HESP-GOMPA survey
(Hanle Echelle SPectrograph -- Galactic survey Of Metal Poor stArs). The stars
exhibit typical nucleosynthesis signatures expected from the so-called
second-generation stars of globular clusters. The light-element
anti-correlation of Mg-Al is detected, along with elevated abundances of Na.
Carbon is found to be depleted, which is compatible with expectation. Lithium
is also detected in SDSS J064655.6+411620.5 and SDSS J193712.01+502455.5; the
measured abundances are similar to those of normal halo giant stars. These
bright escapees provide a unique opportunity to study the nucleosynthesis
events of globular clusters in great detail, and shed light on their
chemical-enrichment histories.
