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The First Fluorine Abundance Determinations in Extragalactic AGB Carbon Stars
FluorineAbundance Determinations Extragalactic
2011/9/29
Fluorine (19F) abundances (or upper limits) are derived in six extragalactic AGB carbon stars from the HF(1-0) R9 line at 2.3358 mu in high resolution spectra. The stars belong to the Local Group gala...
Observations of hipparcos double stars with the wiyn Telescope
double stars wiyn Telescope
2009/6/16
Observations of hipparcos double stars with the wiyn Telescope。
Statistics of multiple stars。