Note 18 — PART II. STATISTICAL STUDY OF EXTRA-GALACTIC NEBULAE

This is apparent even among the observed classes. Referring to formula (3), mT + 5 log b will be constant in so far as Ce + 5 log (1 – e) is constant. The following table indicates that the latter term is approximately constant throughout the sequence of elliptical nebulae. The values of Ce were read from the smooth curve in Fig. 6.