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(sd), sd, esd edit
My spectral DB lists the spectral prefixes (sd), sd and esd. To find: some source explaining them. It is probably just three levels of subdwarfyness, where esd stands for extreme sub-dwarf. Said: Rursus (☻) 20:55, 3 November 2008 (UTC)
Hot subdwarfs: link to Subdwarf_B_star edit
I suggest to include a link to http://en.wikipedia.org/wiki/Subdwarf_B_star in the Hot subdwarfs section. Text would not need to be changed, it could simply use the "Subdwarf B stars ..." occurence at the beginning of the fifth phrase of the section.Bruddl (talk) 16:50, 20 May 2010 (UTC)