Publications of the Astronomical Society of the Pacific, Volumes 61-62

A/mm absorption lines appear April Astronomical Society atmosphere August bands binary bright chromosphere cluster color Comet curve dapd Day Groups Day December diameter disk dẞd dẞl dẞpl dwarf eclipse emission lines exposure faint February field flares galaxies groups observed daily H First Seen Hale Hale telescope Harvard hydrogen indicated intensity International Astronomical Union isotopic July June km/sec L. E. CUNNINGHAM lapd lapl Last Seen Classification Lick Observatory light-curve magnetic activity magnitude maximum measured meteorite mirror Moon motion Mount Wilson Observatory nebulae Nova obtained October orbit Pacific Palomar Observatories period photoelectric photographic photometer plates polarity prominence radial velocities ratio reflector region Seen Last Seen Sept September solar spectra spectral class spectral type spectrograms spectroscopic spectrum stellar Struve sunspot sunspot numbers Table telescope tion tornado variable stars wave length Wilson and Palomar