Astronomy and Astrophysics – Astronomy
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.0505f&link_type=abstract
American Astronomical Society, 194th AAS Meeting, #05.05; Bulletin of the American Astronomical Society, Vol. 31, p.828
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the results of a detailed model atmospheres analysis of an isolated A-type supergiant in NGC 6822. The star has V ~ 18, yet coaddition of three 1-hour exposures using Keck HIRES, was sufficient to gain S/N ~ 60. NGC 6822 is a nearby dwarf irregular galaxy, with a metallicity similar to that of the SMC from nebular abundance studies. We present new elemental abundances, and in particular element ratios, e.g., [O/Fe], that can be used to study the star formation history and chemical evolution of this galaxy.
Foo Kune Denis
McCarthy James K.
Venn Kim A.
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