Metallicity estimations of MW, SMC, and LMC classical Cepheids from the shape of the V- and I-band light curves

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Fig. 15.

Normalized histograms (unit area) of the metallicity estimation of the SMC (blue) and LMC (black) fundamental Cepheids and the MW (red) fundamental Cepheids (GD+BULGE) from the shape of the I-band light curves. For short periods, SMC, LMC, and MW(GD+BULGE): 635, 1649, and 394 stars, respectively. For long periods, SMC, LMC and MW(GD+BULGE): 60, 48 and 92 stars, respectively. (a) I-band metallicity estimation for short-period Cepheids. (b) I-band metallicity estimation (Klagyivik et al. 2013). (c) I-band metallicity estimation for long-period Cepheids.

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