\font\aastabfont=cmr8 \aastabfont \ps@plain \textwidth=7.25in \textheight=9.00in \topmargin=0pt \topskip=0pt \oddsidemargin=-0.4in \evensidemargin=-0.4in \parindent=0pt \parskip=0pt \headheight=0pt \headsep=0pt \footskip=4pt \def\@singleleading{1.0} \def\@doubleleading{1.5} \def\baselinestretch{\@singleleading} \def\doublelines{\def\baselinestretch{\@doubleleading}} \def\singlelines{\def\baselinestretch{\@singleleading}} \def\tablenotemark#1{\rlap{$^{#1}$}} \def\tablenotetext#1#2{ \@temptokena={\vspace{.5ex}{\noindent\llap{$^{#1}$}#2}\par} \@temptokenb=\expandafter{\tblnote@list} \xdef\tblnote@list{\the\@temptokenb\the\@temptokena}} \def\spewtablenotes{ \ifx\tblnote@list\@empty \else \let\@temptokena=\tblnote@list \gdef\tblnote@list{\@empty} \vspace{4.5ex} \footnoterule \vspace{.5ex} {\footnotesize\@temptokena} \fi} \newtoks\@temptokenb \def\tblnote@list{} \def\endtable{\spewtablenotes\end@float} \@namedef{endtable*}{\spewtablenotes\end@dblfloat} \let\tableline=\hline \def\@xfloat#1[#2]{\ifhmode \@bsphack\@floatpenalty -\@Mii\else \@floatpenalty-\@Miii\fi\def\@captype{#1}\ifinner \@parmoderr\@floatpenalty\z@ \else\@next\@currbox\@freelist{\@tempcnta\csname ftype@#1\endcsname \multiply\@tempcnta\@xxxii\advance\@tempcnta\sixt@@n \@tfor \@tempa :=#2\do {\if\@tempa h\advance\@tempcnta \@ne\fi \if\@tempa t\advance\@tempcnta \tw@\fi \if\@tempa b\advance\@tempcnta 4\relax\fi \if\@tempa p\advance\@tempcnta 8\relax\fi }\global\count\@currbox\@tempcnta}\@fltovf\fi \global\setbox\@currbox\vbox\bgroup \def\baselinestretch{\@singleleading}\@normalsize \boxmaxdepth\z@ \hsize\columnwidth \@parboxrestore} \let\jnl@style=\rm \def\ref@jnl#1{{\jnl@style#1}} \def\aj{\ref@jnl{AJ}} \def\araa{\ref@jnl{ARA\&A}} \def\apj{\ref@jnl{ApJ}} \def\apjl{\ref@jnl{ApJ}} \def\apjs{\ref@jnl{ApJS}} \def\applopt{\ref@jnl{Appl.Optics}} \def\apss{\ref@jnl{Ap\&SS}} \def\aap{\ref@jnl{A\&A}} \def\aapr{\ref@jnl{A\&A~Rev.}} \def\aaps{\ref@jnl{A\&AS}} \def\azh{\ref@jnl{AZh}} \def\baas{\ref@jnl{BAAS}} \def\jrasc{\ref@jnl{JRASC}} \def\memras{\ref@jnl{MmRAS}} \def\mnras{\ref@jnl{MNRAS}} \def\pra{\ref@jnl{Phys.Rev.A}} \def\prb{\ref@jnl{Phys.Rev.B}} \def\prc{\ref@jnl{Phys.Rev.C}} \def\prd{\ref@jnl{Phys.Rev.D}} \def\prl{\ref@jnl{Phys.Rev.Lett}} \def\pasp{\ref@jnl{PASP}} \def\pasj{\ref@jnl{PASJ}} \def\qjras{\ref@jnl{QJRAS}} \def\skytel{\ref@jnl{S\&T}} \def\solphys{\ref@jnl{Solar~Phys.}} \def\sovast{\ref@jnl{Soviet~Ast.}} \def\ssr{\ref@jnl{Space~Sci.Rev.}} \def\zap{\ref@jnl{ZAp}} \let\astap=\aap \let\apjlett=\apjl \let\apjsupp=\apjs \def\deg{\hbox{$^\circ$}} \def\sun{\hbox{$\odot$}} \def\earth{\hbox{$\oplus$}} \def\la{\mathrel{\hbox{\rlap{\hbox{\lower4pt\hbox{$\sim$}}}\hbox{$<$}}}} \def\ga{\mathrel{\hbox{\rlap{\hbox{\lower4pt\hbox{$\sim$}}}\hbox{$>$}}}} \def\sq{\hbox{\rlap{$\sqcap$}$\sqcup$}} \def\arcmin{\hbox{$^\prime$}} \def\arcsec{\hbox{$^{\prime\prime}$}} \def\fd{\hbox{$.\!\!^{\rm d}$}} \def\fh{\hbox{$.\!\!^{\rm h}$}} \def\fm{\hbox{$.\!\!^{\rm m}$}} \def\fs{\hbox{$.\!\!^{\rm s}$}} \def\fdg{\hbox{$.\!\!^\circ$}} \def\farcm{\hbox{$.\mkern-4mu^\prime$}} \def\farcs{\hbox{$.\!\!^{\prime\prime}$}} \def\fp{\hbox{$.\!\!^{\scriptscriptstyle\rm p}$}} \def\micron{\hbox{$\mu$m}} \def\onehalf{\hbox{$\,^1\!/_2$}} \def\onethird{\hbox{$\,^1\!/_3$}} \def\twothirds{\hbox{$\,^2\!/_3$}} \def\onequarter{\hbox{$\,^1\!/_4$}} \def\threequarters{\hbox{$\,^3\!/_4$}} \def\ubvr{\hbox{$U\!BV\!R$}} \def\ub{\hbox{$U\!-\!B$}} \def\bv{\hbox{$B\!-\!V$}} \def\vr{\hbox{$V\!-\!R$}} \def\ur{\hbox{$U\!-\!R$}}