2 papers
astro-ph1998
Are there carbon stars in the Bulge ?
Y. K. Ng
The bulge carbon stars have been a mystery since their discovery, because they are about 2.5mag too faint to be regarded as genuine AGB stars, if located inside the metal-rich bulg…
astro-ph1998
Are the Bulge C-stars related to the Sagittarius dwarf galaxy? II. Metallicity -- a link with the Galactic disc
Y. K. Ng
The photometric estimate of the metallicity and the age of the Azzopardi et al. (1991, A&AS 88, 265) carbon stars (Ng 1997, A&A 328, 211) is revised to respectively Z~0.004 and ~0.…