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A fact from S-type star appeared on Wikipedia's Main Page in the Did you know column on 11 July 2016 ( check views). The text of the entry was as follows: Did you know... that S-type stars have bands of zirconium monoxide in their spectrum? A record of the entry may be seen at Wikipedia:Recent additions/2016/July. The nomination discussion and review may be seen at Template:Did you know nominations/S-type star.

Needs to be enhanced, since there might be discourses on S-stars being intermediary between MIII and C:s, the s-process, all odd element abundances found, etc.. Said: Rursus ( ☻) 08:39, 24 October 2008 (UTC) reply

I used Robert D. McClure for S stars being intermediary between M and C stars. That is however a secondary source. The primary would be preferred. Said: Rursus ( ☻) 19:45, 2 November 2008 (UTC) reply