Studies of the Nebulae: Made at the Lick Observatory, University of California, at Mount Hamilton, California, and Santiago, Chile, Volume 13University of California Press, 1918 - 268 pages |
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Page 7
... Nebulae and Clusters Photographed with the Crossley Reflector , by H. D. Curtis PART II . - A Study of Occulting Matter in the Spiral Nebulae , by H. D. Curtis PART III . - The Planetary Nebulae , by H. D. Curtis PART IV . - The ...
... Nebulae and Clusters Photographed with the Crossley Reflector , by H. D. Curtis PART II . - A Study of Occulting Matter in the Spiral Nebulae , by H. D. Curtis PART III . - The Planetary Nebulae , by H. D. Curtis PART IV . - The ...
Page 11
... NEBULAE AND CLUSTERS PHOTOGRAPHED WITH THE CROSSLEY REFLECTOR BY HEBER DOUST ... nebular studies renders it advisable that descriptions of these be published ... Matter in the Spiral Nebulae . " The phrase , " See Abs . Eff . " in the ...
... NEBULAE AND CLUSTERS PHOTOGRAPHED WITH THE CROSSLEY REFLECTOR BY HEBER DOUST ... nebular studies renders it advisable that descriptions of these be published ... Matter in the Spiral Nebulae . " The phrase , " See Abs . Eff . " in the ...
Page 12
... nebulae . Its main characteristic is a band of matter extending diametrally across the nucleus and inner parts of the spiral . Frequently the whorls in this type form a nearly perfect ring ; in other examples the whorls appear to begin ...
... nebulae . Its main characteristic is a band of matter extending diametrally across the nucleus and inner parts of the spiral . Frequently the whorls in this type form a nearly perfect ring ; in other examples the whorls appear to begin ...
Page 13
... nebular photo- graphic material now makes possible a new determination . I have made , therefore , a count of the small nebulae occurring in all the regions covered by this list , rejecting thirty - one regions where the exposure was ...
... nebular photo- graphic material now makes possible a new determination . I have made , therefore , a count of the small nebulae occurring in all the regions covered by this list , rejecting thirty - one regions where the exposure was ...
Page 15
... nebulae is very largely a matter of experience ; all who have worked with photographic plates soon learn , by hard necessity , to recognize the average flaw at a glance . A very large proportion of the objects counted are unmistakably ...
... nebulae is very largely a matter of experience ; all who have worked with photographic plates soon learn , by hard necessity , to recognize the average flaw at a glance . A very large proportion of the objects counted are unmistakably ...
Autres éditions - Tout afficher
Studies of the Nebulae: Made at the Lick Observatory, University ..., Volume 13 Lick Observatory,Joseph Haines Moore Affichage du livre entier - 1918 |
Expressions et termes fréquents
appears bright bands bright lines brighter Campbell N₁ central portion central star continuous spectrum dark lane DETAILS OF OBSERVATION diameter diffuse nebulosity disk edge elongated exposure faint fainter figure g slitless Greater Magellanic Cloud H N₁ N₂ Haynes hydrogen hydrogen lines inclination km./sec Lick Obs LICK OBSERVATORY line Ia long Hẞ M. T. Exp major axis minor axis Miss Hobe N Miss Hobe N₁ moderately bright Moore Miss Hobe Moore N Moore N₁ N₂ N₁ N₂ Hẞ N₂ HB N₂ Hẞ Hy nearly round nucleus band object Orion nebula photographic planetary nebulae radial velocity region relative intensities ring Ring Nebula rotation s.n. Planetary Scott N Scott N₁ Sept Slit long small nebulae spectra spectrograms spiral nebulae spiral structure star of magn stellar condensations stellar nucleus ultra-violet under-exposed wave-lengths whorls Wolf-Rayet Wolf-Rayet stars Ηβ Ηγ