Variable stars in the Pegasus dwarf galaxy (DDO 216)

Details Variable stars in the Pegasus dwarf galaxy (DDO 216) Variable stars in the Pegasus dwarf galaxy (DDO 216)

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj....100.1151h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 100, Oct. 1990, p. 1151-1158.

Astronomy and Astrophysics

Astronomy

32

Astronomical Photometry, Dwarf Galaxies, Variable Stars, Light Curve, Periodic Variations

Scientific paper

Observations obtained over a period of five years of the resolved stars in the Pegasus dwarf irregular galaxy (DDO 216) have been searched for variable stars. Thirty-one variables were found, and periods established for 12. Two of these variable stars are clearly eclipsing variables, seven are very likely Cepheid variables, and the remaining three are probable Cepheids. The period-luminosity relation for the Cepheids indicates a distance modulus for Pegasus of m - M = 26.22 + or - 0.20. This places Pegasus very near the zero-velocity surface of the Local Group.

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