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 |
À l'intérieur du livre
Résultats 1-5 sur 54
Page 38
... hydrogen envelope star ; B. D. + 30 ° , 3639 , magn . 9.3 While the spectroscope has shown the varying sizes of the monochromatic images of this object , the direct photographs , ranging in exposure time from 10s to 30m , show no ...
... hydrogen envelope star ; B. D. + 30 ° , 3639 , magn . 9.3 While the spectroscope has shown the varying sizes of the monochromatic images of this object , the direct photographs , ranging in exposure time from 10s to 30m , show no ...
Page 77
... hydrogen line in the Orion nebula and in the planetary nebula N.G.C. 6572 ( G.C. 4390 , or 26 , R. A. = 18h 7m ) , with reference to the corresponding laboratory line of hydrogen . The measures gave him the radial velocities of the two ...
... hydrogen line in the Orion nebula and in the planetary nebula N.G.C. 6572 ( G.C. 4390 , or 26 , R. A. = 18h 7m ) , with reference to the corresponding laboratory line of hydrogen . The measures gave him the radial velocities of the two ...
Page 79
... hydrogen and helium tubes , but in the beginning at Santiago the iron are was used , and in a very few cases at Mount Hamilton the titanium spark was employed . Nearly all of the work is based quantitatively on the com- parison lines ...
... hydrogen and helium tubes , but in the beginning at Santiago the iron are was used , and in a very few cases at Mount Hamilton the titanium spark was employed . Nearly all of the work is based quantitatively on the com- parison lines ...
Page 80
... hydrogen was obtained in order to supply the zero reading of the HS line on the revillar spectrogram , in case the latter speetrogram should wem not to fit the mandard rednection table It has been remmary to correct all of the ...
... hydrogen was obtained in order to supply the zero reading of the HS line on the revillar spectrogram , in case the latter speetrogram should wem not to fit the mandard rednection table It has been remmary to correct all of the ...
Page 82
... hydrogen lines from the spectrum tube were not finer and sharper " ( p . 199 ) . To anticipate , we may say that observations secured to date , by the more sensitive photographic method , seem to confirm Keeler's conclusion that in the ...
... hydrogen lines from the spectrum tube were not finer and sharper " ( p . 199 ) . To anticipate , we may say that observations secured to date , by the more sensitive photographic method , seem to confirm Keeler's conclusion that in the ...
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