%\special{landscape} \newdimen\signwidth \setbox0=\hbox{+} \signwidth=\wd0 \catcode`*=\active \def*{\kern\signwidth} \newdimen\digitwidth \setbox1=\hbox{0} \digitwidth=\wd1 \catcode`"=\active \def"{\kern\digitwidth} \def\double{\vskip 3pt\hrule \vskip 3pt \hrule \vskip 5pt} \def\tabl #1\par{\centerline{T{\sevenrm ABLE} \number\tableno} \vskip 6pt \centerline{#1}\noindent} \def\leaderfil{\leaders\hbox to 0.5em{\hss.\hss}\hfill} \newcount\tableno \nopagenumbers \magnification=1200 $$\vbox{ \vskip -30pt \tableno = 17 \tabl Properties of the Five SX~Phe Stars in NGC~5053 \par \vskip0pt $$\vbox{ \halign{#\hfil& \hfil#\hfil& \hfil#\hfil& \hfil#\hfil& \hfil#\hfil& \hfil#\hfil\tabskip 0pt\cr \noalign{\vskip 0pt\double\vskip 1pt} \hfil Property \hfil & NC7 & NC11 & NC13 & NC14 & NC15 \cr \noalign{\vskip 3pt} \hfil (1) \hfil &"""(2)"""&"""(3)"""&"""(4)"""&"""(5)"""&"""(6)"""\cr \noalign{\vskip 5pt\hrule\vskip 8pt} \noalign{\vskip 2pt} Period, $P$ (min) & 53.03 & 50.40 & 49.19 & 56.52 & 51.26 \cr $P$ (day) & 0.03683 & 0.0350 & 0.03416 & 0.03925& 0.0356 \cr log $P$ (day) & --1.434 &--1.456 & --1.466 & --1.406& --1.449\cr $\beta$=$dP/dt$ (10$^{-9}$ d/d)""& --4.39 & 0.0 & +0.42 & - & - \cr Epoch($P$) (2,440,000+) & 7823 & 8416 & 5678 & 8417 & 8417 \cr $V_{min}$ & 19.36 & 19.60: & 19.50 & 19.44 & 19.60 \cr $V_{max}$ & 19.22 & 19.40: & 19.37 & 19.36 & 19.48 \cr Amplitude, A$_V$ & 0.14 & 0.15-0.25 & 0.13 & 0.08 & 0.12 \cr $<$$B$$>$ &"19.46: & 19.76 & 19.79 & 19.71 & 19.85 \cr $<$$B$$>$$_0$ & 19.21 & 19.51 & 19.54 & 19.46 & 19.60 \cr $<$$V$$>$ & 19.30 & 19.50 & 19.46 & 19.41 & 19.53 \cr $<$$V$$>$$_0$ & 19.11 & 19.31 & 19.27 & 19.22 & 19.34 \cr $<$$B$$>$--$<$$V$$>$ &"0.16: & 0.26 & 0.33 & 0.30 & 0.32 \cr $<$$B$$>$$_0$--$<$$V$$>$$_0$ &"0.10: & 0.20 & 0.27 & 0.24 & 0.26 \cr $T_{\rm eff}$ (K) & 8500 & 7870 & 7430 & 7605 & 7500 \cr log $T_{\rm eff}$ & 3.930 & 3.896 & 3.871 & 3.881 & 3.875 \cr $M_B$(obs) & 3.15 & 3.45 & 3.48 & 3.40 & 3.54 \cr $M_B$(pred) & 3.12 & 3.47 & 3.49 & 3.36 & 3.46 \cr $M_V$(obs) & 3.07 & 3.27 & 3.23 & 3.18 & 3.30 \cr $M_V$(pred) & 2.98 & 3.27 & 3.29 & 3.16 & 3.25 \cr B.C. (=$M_{bol}$--$M_V$) & --0.05 & --0.05 & --0.05 & --0.05 & --0.05 \cr $m_{bol}$ & 19.06 & 19.26 & 19.22 & 19.17 & 19.29 \cr $M_{bol}$ & 2.93 & 3.22 & 3.24 & 3.11 & 3.20 \cr log $L_{SX}$/$L_{\mathord\odot}$ & 0.732 & 0.616 & 0.608 & 0.660 & 0.624 \cr $L_{SX}$/$L_{\mathord\odot}$& 5.40 & 4.13 & 4.06 & 4.57 & 4.21 \cr Pulsation Mode & 1st o/t & Fund. & Fund. & Fund. & Fund. \cr ${\cal M}_{SX}$(puls)/${\cal M}_{\mathord\odot}$ & 0.53 & 1.10 & 1.58 & 1.25 & 1.46 \cr ${\cal M}_{SX}$(rel RR)/${\cal M}_{\mathord\odot}$ & 0.64 & 1.18 & 1.85 & 1.30 & 1.46 \cr ${\cal M}_{SX}$(rel RR)/${\cal M}_{RR}$ & 0.85 & 1.57 & 2.46 & 1.74 & 1.95 \cr \noalign{\vskip 4pt} \noalign{\vskip 7pt\double\vskip 7pt} \multispan{6}{\hfil Notes to Table 17 \hfil} \cr \noalign{\vskip 10pt} \multispan{6}{The following general assumptions were made: $M_{bol}$(Sun)=+4.76; \hfil} \cr \multispan{6}{ [Fe/H]=--2.41 dex for every star in NGC~5053; \hfil} \cr \multispan{6}{$E$($B$--$V$)=0.06, $A_V$=3.1$\times$$E$($B$--$V$)=0.19, $A_B$=4.1$\times$$E$($B$--$V$)=0.25;\hfil} \cr \multispan{6}{Note that the periods given by NNL for the SX~Phe stars were \hfil} \cr \multispan{6}{preliminary estimates and differ slightly from those reported here. \hfil} \cr }}$$ \vfill \eject }$$ \bye \end