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Radial abundance gradients as observational constraints of galactic evolution：
planetary nebulae galactic evolution
2009/6/25
Radial abundance gradients as observational constraints of galactic evolution：
planetary nebulae and other objects。
Using planetary nebulae to determine the abundance gradient in the galaxy
planetary nebulae the galaxy
2009/6/25
Using planetary nebulae to determine the abundance gradient in the galaxy。
A new determination of the primordial helium abundance
The o II recombination line abundance problem in planetary nebulae
planetary nebulae o II recombination line
2009/6/8
The o II recombination line abundance problem in planetary nebulae。
IRON ABUNDANCE DETERMINATION FOR THE SOLAR-LIKE STARS HR4345 AND HR6573
Stars abundances - Techniques spectroscopic - Line profiles
2009/3/5
Using the BLACKWELL software package written by R.O. Gray,
the iron abundance of the solar-like stars HR 4345 and HR 6573 has been de-
termined. The method is based on determination of the minimum d...