NASA NTRS · 19950028682
Variable stars in the Leo A dwarf galaxy (DDO 69)
Abstract
Observations of the Leo A dwarf galaxy, obtained over the period from 1980 to 1991 are reported. Forty two separate Charge Coupled Devices (CCD) frames were searched for variable stars. A total of 14 suspected variables were found, 9 had sufficient coverage for period determination, and 5 had Cepheid light curves. Four of these stars fit well on a P-L relation and yield a distance modulus, after correction for Galactic foreground extinction, of m-M = 26.74. This corresponds to a distance of 2.2 Mpc, placing Leo A near the Local Group zero-velocity surface.
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Hoessel, John G., Saha, A., Krist, John, Danielson, G. Edward. 1994-08-01. Variable stars in the Leo A dwarf galaxy (DDO 69). https://ntrs.nasa.gov/citations/19950028682
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