Papers published in the journals of the American Astronomical Society (AAS) present the results of significant original research that have not been published previously. Manuscripts submitted to the journals should meet this criterion and must not be under consideration for publication elsewhere. The journals of the AAS subscribe to the basic standards of professional ethics and conduct that are common across all areas of scholarly publishing. Authors submitting manuscripts to these journals are expected to be familiar with, and to follow, the guidelines set out in the policy.