23 citations · 23 across the 2 of their papers we have counts for
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Metallicity estimates of Galactic Cepheids based on Walraven photometry
S. Pedicelli, J. Lub, J. W. Pel +13
We present new empirical and theoretical calibrations of two photometric metallicity indices based on Walraven photometry. The empirical calibration relies on a sample of 48 Cephei…
Heavy Calcium in CP Stars
C. R. Cowley, S. Hubrig, F. Castelli +2
Large wavelength shifts of infrared triplet lines of Ca II have been observed in the spectra of HgMn and magnetic Ap stars. They have been attributed to the heavy calcium isotopes,…
Revised Baade-Wesselink Analysis of RR Lyrae Stars
Carla Cacciari, Gisella Clementini, Fiorella Castelli +1
We have applied the Baade-Wesselink method to two field RR Lyrae stars, i.e. SW And and RR Cet, and derived their distances and physical parameters. With respect to previous B-W an…
Isotopic composition of Hg and Pt in slowly rotating HgMn stars
S. Hubrig, F. Castelli, G. Mathys
Preliminary results from a study of the isotopic compositions of the elements Hg and Pt in a number of HgMn stars are presented. This work represents an improvement over previous s…
New beryllium observations in low-metallicity stars
P. Molaro, P. Bonifacio, F. Castelli +1
We present observations of the Be II 313.0 nm resonance doublet in 14 halo and old disk stars with metallicities ranging from [Fe/H]=-0.4 to about -3.0 obtained with the CASPEC spe…
Abundances of four very metal-poor stars of the BPS survey
Francesca Primas, Paolo Molaro, Fiorella Castelli
High resolution CASPEC and EMMI spectra (R10) of the faint metal- deficient candidates CS 22891--209, CS 22897--8, CS 22948--66 and CS 22968--14 taken from the survey…