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 77
... spectra of the bright - line nebulae . Keeler's contribution to the same problem , made with the 36 - inch refracting telescope and the Brashear spectroscope , began , in effect , with measures of the displacements of the Hẞ hydrogen ...
... spectra of the bright - line nebulae . Keeler's contribution to the same problem , made with the 36 - inch refracting telescope and the Brashear spectroscope , began , in effect , with measures of the displacements of the Hẞ hydrogen ...
Page 79
... spectra to about 30 per cent of those with the 1 - prism combination , with only a slight sacrifice of linear dispersion . Still later the same 8 - inch camera was occa- sionally used with 1 - prism dispersion . The mechanical ...
... spectra to about 30 per cent of those with the 1 - prism combination , with only a slight sacrifice of linear dispersion . Still later the same 8 - inch camera was occa- sionally used with 1 - prism dispersion . The mechanical ...
Page 80
... spectra . It frequently happens that several of these refracting wts are used in one and the same week , and occasionally in one and the same night . It is accordingly not practicable to use a curved slit to fit each combination , as a ...
... spectra . It frequently happens that several of these refracting wts are used in one and the same week , and occasionally in one and the same night . It is accordingly not practicable to use a curved slit to fit each combination , as a ...
Page 85
... spectra : ( a ) 125 planetary and irregular nebulae whose radial velocities we have determined at Mount Hamilton and at Santiago ; ( b ) 9 planetary and irregular nebulae whose spectra contain the characteristic bright lines , but which ...
... spectra : ( a ) 125 planetary and irregular nebulae whose radial velocities we have determined at Mount Hamilton and at Santiago ; ( b ) 9 planetary and irregular nebulae whose spectra contain the characteristic bright lines , but which ...
Page 98
... spectra of this and other regions of the Orion nebula as published in Astroph . Jour . , 6 , 363-6 , 1897. The estimates of relative intensities made in 1897 , and earlier , are in accord with our present estimates from the spectrograms ...
... spectra of this and other regions of the Orion nebula as published in Astroph . Jour . , 6 , 363-6 , 1897. The estimates of relative intensities made in 1897 , and earlier , are in accord with our present estimates from the spectrograms ...
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