RSAA Colloquia / Seminars / Feast-of-Facts: Thursday, 19 March 2015, 11:00-12:00; Duffield Lecture Theatre

David Block

"The strategy of Edwin Hubble; changing the history of galaxy morphology forever"

Where did Edwin Hubble get his famous tuning fork from? Every astronomer studying galaxies uses Hubble types Sa, Sb, Sc; does anyone know the actual source of the ’Hubble classification bins’? Where did Hubble get the Hubble luminosity profile from? Who actually computed the rate of expansion of the Universe, for the first time? Who secured almost all the spectra in ’Hubble’s law’ v=Hr? Following years of collaboration and detective work together with KC Freeman, the strategy of Edwin Hubble is exposed and unmasked to the astronomical community. The seminar details conversations held with the late Dr Allan Sandage. The results are contained in a recent book published by Springer in New York.