Astronomy & Astrophysics (A&A)

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class="menu"> <li class="item-145 active deeper parent"><span class="separator">About A&A</span> <ul><li class="item-137"><a href="/about-aa/aims-and-scope" >Aims and scope</a></li><li class="item-143"><a href="/about-aa/history" >History</a></li><li class="item-136"><a href="/about-aa/editors-of-aa" >Editors of A&A</a></li><li class="item-140"><a href="/about-aa/board-of-directors" >Board of Directors</a></li><li class="item-138"><a href="/about-aa/indexed-in" >Indexed in</a></li><li class="item-139"><a href="/about-aa/copyright" >Copyright</a></li><li class="item-162"><a href="/images/stories/leaflet/aa_leaflet.pdf" target="_blank" >A&A leaflet (PDF)</a></li><li class="item-530"><a href="https://www.edpsciences.org/images/stories/librarians/EDP-AA-S2O.pdf" target="_blank" >A&A S2O leaflet (PDF)</a></li><li class="item-197 current active"><a href="/about-aa/masthead" >Masthead</a></li></ul></li><li class="item-424 deeper parent"><span class="separator">Browse articles</span> <ul><li 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Introduction</a></li><li class="item-472"><a href="/for-authors/language-editing/2-main-guidelines" >2. Main guidelines for A&A style</a></li><li class="item-475"><a href="/for-authors/language-editing/3-general-structure" >3. General structure</a></li><li class="item-478"><a href="/for-authors/language-editing/4-uk-versus-us-spelling-and-grammar" >4. UK versus US spelling and grammar</a></li><li class="item-481"><a href="/for-authors/language-editing/5-punctuation-and-style-concerns-regarding-equations-figures-tables-and-footnotes" >5. Punctuation and style concerns regarding equations, figures, tables, and footnotes</a></li><li class="item-484"><a href="/for-authors/language-editing/6-verb-tenses" >6. Verb tenses</a></li><li class="item-487"><a href="/for-authors/language-editing/7-general-hyphenation-guide" >7. General hyphenation guide</a></li><li class="item-490"><a href="/for-authors/language-editing/8-common-editing-issues" >8. Common editing issues</a></li><li class="item-493"><a href="/for-authors/language-editing/9-measurements-and-their-descriptions" >9. Measurements and their descriptions</a></li><li class="item-496"><a href="/for-authors/language-editing/10-suggested-resources-for-more-tips-on-language-editing-in-the-sciences" >10. 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