New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12
New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12
We report the discovery of 6576 new spectroscopically confirmed white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. We obtain Teff, log g and mass for hydrogen atmosphere white dwarf stars (DAs) and helium atmosphere white dwarf stars (DBs), estimate the calcium/helium abundances for the …