SDSS J082625.70+612515.10 ( V = 11.4 ; [ Fe/H ] = - 3.1 ) and SDSS J134144.60+474128.90 ( V = 12.4 ; [ Fe/H ] = - 3.2 ) were observed with the SDSS 2.5-m telescope as part of the SDSS-MARVELS spectroscopic pre-survey , and were identified as extremely metal-poor ( EMP ; [ Fe/H ] < -3.0 ) stars during high-resolution follow-up with the Hanle Echelle Spectrograph ( HESP ) on the 2.3-m Himalayan Chandra Telescope .
In this paper , the first science results using HESP , we present a detailed analysis of their chemical abundances .
Both stars exhibit under-abundances in their neutron-capture elements , while one of them , SDSS J134144.60+474128.90 , is clearly enhanced in carbon .
Lithium was also detected in this star at a level of about A ( Li ) = 1.95 .
The spectra were obtained over a span of 6-24 months , and indicate that both stars could be members of binary systems .
We compare the elemental abundances derived for these two stars along with other carbon-enhanced metal-poor ( CEMP ) and EMP stars , in order to understand the nature of their parent supernovae .
We find that CEMP-no stars and EMP dwarfs exhibit very similar trends in their lithium abundances at various metallicities .
We also find indications that CEMP-no stars have larger abundances of Cr and Co at a given metallicity , compared to EMP stars .