Three Cepheids in Galactic Open Clusters: Chemical Composition and Evolution

Details Three Cepheids in Galactic Open Clusters: Chemical Composition and Evolution Three Cepheids in Galactic Open Clusters: Chemical Composition and Evolution

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001oap....14..174u&link_type=abstract

Odessa Astronomical Publications, 14, 174-177

Astronomy and Astrophysics

Astronomy

Stars: Abundances, Stars: Cepheids In Open Clusters, Stars: Individual: Cf Cas, Dl Cas, Wz Sgr

Scientific paper

Three classical Cepheids in galactic open clusters (CF Cas, DL Cas and WZ Sgr) were investigated, using high-resolution CCD spectra. Their Teff and EB-V estimations have a good agreement with photometrically determined ones. CF Cas and DL Cas have metallicity values, close to those of the Sun, whereas WZ Sgr has overabundant metallicity content with Z=0.029. Chemical abundance data show that they are the post first dredge-up stars. C and O content and ages have a good agreement with the theoretically predicted values. All these objects have a good fit with the PL relation for galactic Cepheids.

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