proof of concept for AASTeX62 pandoc template

.gitignore

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+*.aux
+*.log
+*.pdf

README.md

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+# Papers in Markdown
+
+It might be nice to write astronomy papers in markdown instead of directly in TeX.
+This is a set of templates for [pandoc](https://pandoc.org/) to enable that.
+
+Currently only [AASTeX](https://journals.aas.org/authors/aastex/) is (partially) supported, but I welcome contributions for MNRAS, A&A, and other journals.
+
+## Journal Templates
+
+* [aastex62](aastex62/)

aastex62/README.md

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+# AASTeX Pandoc Template
+
+Generate a `tex` file with:
+
+```
+pandoc demo.md -s --template aastex62_template.tex -o demo.tex --filter pandoc-citeproc
+```
+
+Go straight to the pdf with:
+
+```
+pandoc demo.md -s --template aastex62_template.tex -o demo.pdf --filter pandoc-citeproc  --pdf-engine=xelatex
+```
+
+The `demo.md` file is a subset of the contents of the `sample62.tex` file which is distributed with [aastex62](https://journals.aas.org/authors/aastex.html#_download).
+
+## Usage Notes
+
+

aastex62/aastex62_template.tex

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+\documentclass
+$if(aastexopts)$
+[
+$for(aastexopts)$
+ $aastexopts$,
+$endfor$
+$endif$
+]
+{aastex62}
+
+$if(bibstyle)$
+\bibliographystyle{$bibstyle$}
+$endif$
+
+$if(received)$
+\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{$author.affiliation$}
+        $endfor$
+    $endif$
+$endfor$
+
+$if(keywords)$
+    \keywords{
+    $for(keywords)$
+        $keywords$ --- 
+    $endfor$
+    }
+$endif$
+
+$if(abstract)$
+\begin{abstract}
+$abstract$
+\end{abstract}
+$endif$
+
+$body$
+
+\end{document}

aastex62/demo.md

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+---
+aastexopts: [twocolumn, tighten]
+bibstle: aasjournal
+received: "January 1, 2018"
+revised: "January 7, 2018"
+accepted: "\today"
+submitjournal: ApJ 
+title: "An Example Article using \aastex v6.2\footnote{Released on January, 8th, 2018}}"
+shorttitle: Sample article
+shortauthors: Schwarz et al.
+author:
+- name: Greg J. Schwarz
+  ORCID: 0000-0002-0786-7307
+  affiliation: ["American Astronomical Society \\ 2000 Florida Ave., NW, Suite 300 \\ Washington, DC 20009-1231, USA"]
+- name: August Muench
+  affiliation: ["American Astronomical Society \\ 2000 Florida Ave., NW, Suite 300 \\ Washington, DC 20009-1231, USA"]
+- name: Butler Burton
+  affiliation: ["National Radio Astronomy Observatory", "AAS Journals Associate Editor-in-Chief"]
+- name: Amy Hendrickson
+  affiliation: ["TeXnology Inc."]
+- name: Julie Steffen
+  affiliation: ["AAS Director of Publishing", "American Astronomical Society \\ 2000 Florida Ave., NW, Suite 300 \\ Washington, DC 20009-1231, USA"]
+- name: Jeff Lewandowski
+  affiliation: ["IOP Senior Publisher for the AAS Journals", "IOP Publishing, Washington, DC 20005"]
+keywords: ["editorials, notices", miscellaneous, catalogs, surveys]
+abstract: |
+  This example manuscript is intended to serve as a tutorial and template for authors to use when writing their own AAS Journal articles. The manuscript includes a history of \aastex\ and documents the new features in the previous versions as well as the new features in version 6.2. This manuscript includes many figure and table examples to illustrate these new features.  Information on features not explicitly mentioned in the article can be viewed in the manuscript comments or more extensive online documentation. Authors are welcome replace the text, tables, figures, and bibliography with their own and submit the resulting manuscript to the AAS Journals peer review system.  The first lesson in the tutorial is to remind authors that the AAS Journals, the Astrophysical Journal (ApJ), the Astrophysical Journal Letters (ApJL), and Astronomical Journal (AJ), all have a 250 word limit for the abstract\footnote{Note that manuscripts submitted to the new Research Notes of the American Astronomical Society (RNAAS) do \textbf{not} have abstracts.}.  If you exceed this length the Editorial office will ask you to shorten it.
+---
+
+\newcommand{\vdag}{(v)^\dagger}
+\newcommand\aastex{AAS\TeX}
+\newcommand\latex{La\TeX}
+
+# Introduction {#sec:intro}
+
+\latex\ \footnote{\url{http://www.latex-project.org/}} is a document markup
+language that is particularly well suited for the publication of
+mathematical and scientific articles \citep{lamport94}. \latex\ was written
+in 1985 by Leslie Lamport who based it on the \TeX\ typesetting language
+which itself was created by Donald E. Knuth in 1978.  In 1988 a suite of
+\latex\ macros were developed to investigate electronic submission and
+publication of AAS Journal articles \citep{1989BAAS...21..780H}.  Shortly
+afterwards, Chris Biemesdefer merged these macros and more into a \latex\
+2.08 style file called \aastex.  These early \aastex\ versions introduced
+many common commands and practices that authors take for granted today.
+Substantial revisions
+were made by Lee Brotzman and Pierre Landau when the package was updated to
+v4.0.  AASTeX v5.0, written in 1995 by Arthur Ogawa, upgraded to \latex\ 2e
+which uses the document class in lieu of a style file.  Other improvements
+to version 5 included hypertext support, landscape deluxetables and
+improved figure support to facilitate electronic submission.  
+\aastex\ v5.2 was released in 2005 and introduced additional graphics
+support plus new mark up to identifier astronomical objects, datasets and
+facilities.
+