Last updated March 1, 2021. Thank you for your interest in the AASTEX package for manuscript preparation. This directory contains all the files in the distribution. They are described briefly below. Following the file descriptions are short installation instructions, the generic recipe for printing the user guide and sample, and information about contacting us regarding the distribution. MANIFEST aastex631.cls The most recent AASTEX class file (V6.3.1) aasjournal.bst BIBTEX .bst file optimized for AAS Journal publishing sample631.tex Sample paper with "typical" content and markup sample631.pdf Sample paper PDF file sample631.bib Sample paper BIBTEX .bib file cost.pdf Figure 1 in sample631.tex V2491_Cyg.pdf Figure 2a in sample631.tex HV_Cet.pdf Figure 2b in sample631.tex LMC_2009.pdf Figure 2c in sample631.tex RS_Oph.pdf Figure 2d in sample631.tex U_Sco.pdf Figure 2e in sample631.tex KT_Eri.pdf Figures 2f and 3 in sample631.tex f4.pdf Figure 4 in sample631.tex f5.pdf Figure 5 in sample631.tex interactive.tar.gz A .tar.gz package containing all the interactive figure files associated with Figure 5 in sample631.tex orcid-ID.png PNG file use to produced the ORCID icon in \author Please see the AASTEX Web site for further documentation https://journals.aas.org/aastex-package-for-manuscript-preparation/ for additional installation notes or contact the help desk at aastex-help@aas.org for assistance. ADMINISTRATIVE DETAILS AASTEX was designed and written by Chris Biemesderfer in 1988. Substantial revisions were made by Lee Brotzman and Pierre Landau when the package was updated to v4.0. AASTEX was rewritten as a LATEX class by Arthur Ogawa for the v5.0 release. It was updated to v5.2 by SR Nova Private Ltd. Amy Hendrickson (TEXnology Inc.) wrote the v6.0 release which itself was primarily based on the emulateapj classfile created by Maxim Markevitch and Alexey Vikhlinin. Amy Hendrickson also created versions v6.1 - v6.3.1. Over the years the documentation has benefited from revisions by Jeannette Barnes, Sara Zimmerman, Greg Schwarz, Gus Meunch, Amy Henderickson, and Butler Burton. Comments, suggestions, complaints, and pleas for help can be sent electronically to aastex-help@aas.org. AASTEX Web site: https://journals.aas.org/aastex-package-for-manuscript-preparation/ CB, 20 May 1999 Rev. SZ, 2 Nov 2000 Rev. SZ, 14 Dec 2004 Rev. SZ, 22 Jun 2005 Rev. GJS, 02 Mar 2016 Rev. GJS, 08 Jan 2018 Rev. GJS, 07 Aug 2019 Rev. GJS, 01 Mar 2021 Rev.