papers-in-markdown/aastex63/aastex63_template.tex

\documentclass
$if(aastexopts)$
[
$for(aastexopts)$
 $aastexopts$,
$endfor$
]
$endif$
{aastex63}

$if(bibstyle)$
\bibliographystyle{$bibstyle$}
$endif$

\usepackage{booktabs}

$if(texpackages)$
$for(texpackages)$
\usepackage
$if(opts)$
[
$for(opts)$
$opts$,
$endfor$
]
$endif$
{$texpackages.name$}
$endfor$
$endif$

$if(preambleinput)$
$for(preambleinput)$
\input{$preambleinput$}
$endfor$
$endif$

$if(received)$
\received{$received$}
$endif$

$if(revised)$
\revised{$revised$}
$endif$

$if(accepted)$
\accepted{$accepted$}
$endif$

$if(submitjournal)$
\submitjournal{$submitjournal$}
$endif$

\begin{document}

\title{$title$}

$for(author)$
\author
    $if(author.ORCID)$
        [$author.ORCID$]
    $endif$
    {$author.name$}
    $if(author.affiliation)$
        $for(author.affiliation)$
            \affiliation{$author.affiliation$}
        $endfor$
    $endif$
    $if(author.collaboration)$
        $for(author.collaboration)$
            \collaboration{$author.collaboration$}
        $endfor$
    $endif$
    $if(author.nocollaboration)$
    \nocollaboration
    $endif$
$endfor$

$if(keywords)$
    \keywords{
    $for(keywords)$
        $keywords$ --- 
    $endfor$
    }
$endif$

$if(abstract)$
\begin{abstract}
$abstract$
\end{abstract}
$endif$

$body$

$if(software)$
\software{
$for(software)$
$software$,
$endfor$
}
$endif$

$if(facility)$
\facility{
$for(facility)$
$facility$,
$endfor$
}
$endif$

$if(bibliography)$
$for(bibliography)$
\bibliography{$bibliography$}
$endfor$
$endif$

\end{document}