Talk:Sigma Canis Majoris

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Spectral classification[edit]

Umm...if it is K4III then it isn't a supergiant really...? These spectral type refs are pretty old....Cas Liber (talk · contribs) 13:50, 16 October 2017 (UTC)

2008 isn't so old for an MK catalogue. Simbad still shows K5Ib, but then it (allegedly) used to show M1.5Iab. I don't always understand Simbad's criteria for picking the preferred spectral type. Skiff gives a mix of K4III and K5-7Ib results. The luminosity is very high for a giant, but that really is old, I'll have a look for something newer. Lithopsian (talk) 14:15, 16 October 2017 (UTC)