To get the standard A&A printer layout (i.e. single-line spacing), you have to include this command at the beginning of your article.

 

You can choose between two formats for the abstract: the traditional format (using the option traditabstract) or the structured format recently introduced at A\&A (option structabstract). See here for details about the structured abstracts. The default option is structabstract.

 

 

Both for refereeing purposes and, after acceptance, for language editing purposes, the authors are requested to send their article in "Referee format", i.e. with a special double-line spacing layout. To set this class option, please include the referee option. This special layout also provides a list of all astronomical objects indexed with the \object command.

There is a special layout for Research Notes. The mention "(Research Note)" is automatically added in the title, as well as "(RN)" in the running title

 

 

There is a special layout for Letters. The mention "Letter to the Editor" is automatically added.

 

 

In articles that are the result of consortia, the number of authors and the list of affiliations are very long. With the longauth option, all the institutes are set below the references.

 

 

Some papers contain a lot of large mathematical formulae which are sometimes not easily readable and cannot be written in a 2-column format. In this case, the authors can submit their articles using the option onecolumn. After the submission, the editors will confirm if the article will actually be printed on 1 column, right across the page.

 

 

As the use of the TX fonts results in a slightly different page make-up from CM fonts, we encourage you to use TX fonts, following this example.