Page 649 - 89 history of astronomy_opt
P. 649

ing no stars over fifth magnitude, of which
                                         152 Schjellerup, in Canes Venatici, is a good
                                         example. This spectrum also has bands,
                                         but these are shaded on the violet side and
                                         sharp on the red side. They are due to car-
                                         bon in some form. These stars are ruby red
                                         in the telescope.
                                            It would appear, then, that all stars are
                                         suns with continuous spectra, and the classes
                                                           649
   644   645   646   647   648   649   650   651   652   653   654