Paper:	Temperatures of Cepheids from Line-Depth Ratios
Volume:	154, Cool Stars, Stellar Systems and the Sun: Tenth Cambridge Workshop
Page:	791
Authors:	Krockenberger, M.; Sasselov, D.; Noyes, R.; Korzennik, S.; Nisenson, P.; Brown, T.; Kennelly, T.; Horner, S.
Abstract:	We present observations of 11 Cepheids and 16 non-variable supergiants with the Advanced Fiber Optics Echelle (AFOE) spectrograph. We measure the effective temperatures of Cepheids and supergiants using spectral line depth ratios and Kurucz's model atmospheres. For the Cepheids we use the fact that the reddening is constant as a function of phase as an additional constraint. We find errors in the mean temperature as small as 10 K for the best sampled Cepheids. Our temperatures and surface brightnesses disagree with the results of the Barnes-Evans method.

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