All Figures

$\begin{figure} \par\includegraphics[width=7cm,clip]{4704f1.eps}\end{figure}$ Figure 1: O-C data for SV Vulpeculae are plotted as a function of the observed Heliocentric Julian Date of light maximum. The size of the symbol increases with increasing weight for the data set. The curve represents the best-fitting parabolic fit to the data.
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{4704f2.eps}\end{figure}$ Figure 2: Observed rates of period change for Cepheids are compared with model and semi-empirical predictions for stars lying in the center of the observed instability strip. From top to bottom the lines in the upper plot (period increases) correspond to first (dashed), possible fifth (dotted), and third (solid) crossings; those in the lower plot (period decreases) correspond to possible fourth (dotted) and second (solid) crossings. Filled circles indicate Cepheids likely to be in the second or third crossing of the instability strip, open circles Cepheids identified as in potential fourth or fifth crossings, and asterisks Cepheids in the first crossing. SV Vul is the circled point in the lower plot.
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{4704f3.eps}\end{figure}$ Figure 3: Carbon (C) and oxygen (O) abundances relative to iron (Fe) are plotted relative to sodium (Na) abundance, scaled to iron, for Cepheids that have both a recent atmospheric abundance study and O-C data to distinguish crossing mode. Filled circles represent Cepheids likely to be in the second or third crossing of the instability strip, open circles to Cepheids in possible fourth or fifth crossings of the strip. SV Vul is the circled point.
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{4704f4.eps}\end{figure}$ Figure 4: The abundances of sodium relative to iron ([Na/Fe]) and carbon relative to iron ([C/Fe]) are plotted as a function of the logarithm of pulsation period for each Cepheid. Symbols are as in Fig. 3.
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{4704f1.eps}\end{figure}$	Figure 1: O-C data for SV Vulpeculae are plotted as a function of the observed Heliocentric Julian Date of light maximum. The size of the symbol increases with increasing weight for the data set. The curve represents the best-fitting parabolic fit to the data.
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$\begin{figure} \par\includegraphics[width=7cm,clip]{4704f4.eps}\end{figure}$	Figure 4: The abundances of sodium relative to iron ([Na/Fe]) and carbon relative to iron ([C/Fe]) are plotted as a function of the logarithm of pulsation period for each Cepheid. Symbols are as in Fig. 3.
Open with DEXTER