Allen's Astrophysical Quantities star symbols linked to representative stellar spectra from Perry Berlind's FAST Spectral Atlas at (CfA) - used with permission
ishort "at" ap.smu.ca
Data source: Allen's Astrophysical Quantities 4thEd,. with links to spectra (displayed below) Modern Astrophysics (Carroll & Ostlie) 2ndEd., with MS Mass-Luminosity relation