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Accurate dynamical mass determination of a classical Cepheid in an eclipsing binary system
G. Pietrzynski, I. B. Thompson, W. Gieren +5
Stellar pulsation theory provides a means of determining the masses of pulsating classical Cepheid supergiant - it is the pulsation that causes their luminosity to vary. Such pulsa…
The Araucaria Project. First Cepheid Distance to the Sculptor Group Galaxy NGC 7793 from Variables discovered in a Wide-Field Imaging Survey
G. Pietrzynski, W. Gieren, M. Hamuy +12
We have detected, for the first time, Cepheid variables in the Sculptor Group spiral galaxy NGC 7793. From wide-field images obtained in the optical V and I bands on 56 nights in 2…
The Araucaria Project: The distance to the Small Magellanic Cloud from near infrared photometry of Type~II Cepheids
Ciechanowska A., Pietrzynski G., Szewczyk O. +2
We have obtained deep near infrared J- and K-band observations of 14 BL Herculis and 5 W Virginis SMC stars from the OGLE III survey with the ESO New Technology Telescope equipped…