Variable stars in the Leo A dwarf galaxy (DDO 69)

Details Variable stars in the Leo A dwarf galaxy (DDO 69) Variable stars in the Leo A dwarf galaxy (DDO 69)

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108..645h&link_type=abstract

The Astronomical Journal, vol. 108, no. 2, p. 645-652

Astronomy and Astrophysics

Astronomy

35

Cepheid Variables, Charge Coupled Devices, Dwarf Galaxies, Dwarf Stars, Giant Stars, Variable Stars, Astronomical Catalogs, Astronomical Photometry, Stellar Magnitude, Stellar Mass

Scientific paper

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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