... Cepheids lie within the instability strip, and their period-luminosity relations in ... of good Cepheid candidates (i.e., those with regular, Cepheid-like lightcurves ...
... Cepheid luminosities to be done according to the period P and a color C. Hence, a ... Cepheid radius essentially independent of abundance and temperature variations ... Cepheid color domain, it has been further applied for investigating the SC ...
... 1200Z. 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed GHRS/2 5357 (Cepheid Masses: Cycle 4 High) The High Resolution Spectrograph (Side two) was used to make ultraviolet spectral observations of binary Cepheid star HD183344 to determine its mass ...
... The LMC Cepheids have a lower average metallicity than both the Galactic Cepheids that define the local calibration and the Cepheids in more distant galaxies used to derive H 0 - setting the stage for potential systematic errors in the distance scale. ...
... ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed GHRS/2 5854 (Cepheid Masses) The High Resolution Spectrograph (Side Two) was used to make observations of the blue, main sequence companion of Cepheid star HD15679 to determine the mass of the system ...
... was used to make one image of Cepheid variable stars located inside galaxy NGC-5253 ... galaxy M-101 which is located in Ursa Major looking for Cepheid Variable stars ...