Diferencies ente revisiones de «Estrella de carbonu»

Carbon stars were discovered already in the 1860:ies when spectral classification pioneer [[Angelo Secchi|Pater Angelo Secchi]] erected the [[Stellar classification#Secchi classes|Secchi class IV]] for the carbon stars, who in the llatelate 1890:ies were reclassified as N class stars. <ref>[http://www.astro.ufl.edu/~gott/AST1002/Additional_Notes/Add_notes.week5 Classification of Stellar Spectra: Some History]</ref>