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 85
... hydrogen lines , in the region photographed . The N , line is very faintly recorded on the last plate , exposure 31.4 hours , and there is a scarcely recognizable though certain trace of N , on the same plate , but N , and N , are not ...
... hydrogen lines , in the region photographed . The N , line is very faintly recorded on the last plate , exposure 31.4 hours , and there is a scarcely recognizable though certain trace of N , on the same plate , but N , and N , are not ...
Page 96
... hydrogen lines , in 1901 , for the radial velocity of the Orion nebula . His result is +16.2 km.16 Vogel and Eberhard obtained ten observations with a 3 - prism spectrograph attached to the 32.5 cm . refractor , in 1901-02 , which ...
... hydrogen lines , in 1901 , for the radial velocity of the Orion nebula . His result is +16.2 km.16 Vogel and Eberhard obtained ten observations with a 3 - prism spectrograph attached to the 32.5 cm . refractor , in 1901-02 , which ...
Page 102
... ft . Ne not visible . V. much under - exposed Aa -10 , A8 -0.3 . Fine plate . 10:37 Aa +0 : 4 , A8 +0 : 1 . Titanium and hydrogen comparison spectra . N. v . good Nov. 15.0 1.9 3 - pr . 16 - in 102 PUBLICATIONS OF THE LICK OBSERVATORY.
... ft . Ne not visible . V. much under - exposed Aa -10 , A8 -0.3 . Fine plate . 10:37 Aa +0 : 4 , A8 +0 : 1 . Titanium and hydrogen comparison spectra . N. v . good Nov. 15.0 1.9 3 - pr . 16 - in 102 PUBLICATIONS OF THE LICK OBSERVATORY.
Page 111
... Hydrogen radiations are strong in this object ; Hẞ and N2 have essentially equal intensities on the spectrograms . Hy is strong on the first plate , but its comparison line is poor . Remarks Gr . M. T. Exp . 1913 Sept. 28.94 3.0h ...
... Hydrogen radiations are strong in this object ; Hẞ and N2 have essentially equal intensities on the spectrograms . Hy is strong on the first plate , but its comparison line is poor . Remarks Gr . M. T. Exp . 1913 Sept. 28.94 3.0h ...
Page 124
... hydrogen lines and faint ones of nebulium superimposed upon an early type star spectrum . " Campbell and Paddock observing visually , were unable to see bright lines , but the strong continuous spectrum in the green region appeared to ...
... hydrogen lines and faint ones of nebulium superimposed upon an early type star spectrum . " Campbell and Paddock observing visually , were unable to see bright lines , but the strong continuous spectrum in the green region appeared to ...
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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