Other
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...181.4001d&link_type=abstract
American Astronomical Society, 181st AAS Meeting, #40.01; Bulletin of the American Astronomical Society, Vol. 24, p.1181
Other
Scientific paper
Deep B, V, and I CCD images have been obtained of a field on the major axis of the nearby dwarf galaxy NGC3109. A large population of early-type stars is seen, and the luminosity function of these objects follows a well-defined power-law with exponent 0.37 +/- 0.01, which is substantially flatter than what is seen in other galaxies. Asymptotic and first-ascent giant branch stars have also been detected. The luminosity function of AGB stars is identical with what is seen in the SMC, while the locus of the RGB is relatively blue, suggesting that [Fe/H] ~ -1.6. Finally, the locus of early-type main-sequence stars appears to be reddened, such that E(B-V) ~ 0.14. If this reddening is representative of NGC3109 as a whole, then the distance modulus infered from published Cepheid observations may be as low as mu_0 ~ 25.1.
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