Measuring helium abundance difference in giants of NGC 2808

DIRECT EVIDENCE FOR AN ENHANCEMENT OF HELIUM IN GIANT STARS IN OMEGA CENTAURI

(2011) A. K. Dupree et al.   ASTROPHYSICAL JOURNAL

Helium in first and second-generation stars in globular clusters from spectroscopy of red giants

(2010) A. Bragaglia et al.   ASTRONOMY & ASTROPHYSICS

The second and third parameters of the horizontal branch in globular clusters

(2010) R. G. Gratton et al.   ASTRONOMY & ASTROPHYSICS

The subgiant branch ofω Centauri seen through high-resolution spectroscopy

(2010) E. Pancino et al.   ASTRONOMY & ASTROPHYSICS

CALCIUM AND LIGHT-ELEMENTS ABUNDANCE VARIATIONS FROM HIGH-RESOLUTION SPECTROSCOPY IN GLOBULAR CLUSTERS

(2010) Eugenio Carretta et al.   Astrophysical Journal Letters

FAST WINDS AND MASS LOSS FROM METAL-POOR FIELD GIANTS

(2009) A. K. Dupree et al.   ASTRONOMICAL JOURNAL

Helium Line Formation and Abundance during a C‐Class Flare

(2008) Vincenzo Andretta et al.   ASTROPHYSICAL JOURNAL

The fraction of second generation stars in globular clusters from the analysis of the horizontal branch★

(2008) F. D'Antona et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

DAOSPEC: An Automatic Code for Measuring Equivalent Widths in High-Resolution Stellar Spectra

(2008) Peter B. Stetson et al.   PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC