Helium enhanced stars and multiple populations along the horizontal branch of NGC 2808: Direct spectroscopic measurements
Citation
Marino, A, Milone, A, Przybilla, N et al. 2014, 'Helium enhanced stars and multiple populations along the horizontal branch of NGC 2808: Direct spectroscopic measurements', Monthly Notices of the Royal Astronomical Society, vol. 437, no. 2, pp. 1609-1627.