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 179
... ultra - violet radiations , and they are not visible in the N ,, N. , and many other images . Our results seem to indicate that this phenomenon of double lines is dependent upon the same physical conditions in the nebulae that are ...
... ultra - violet radiations , and they are not visible in the N ,, N. , and many other images . Our results seem to indicate that this phenomenon of double lines is dependent upon the same physical conditions in the nebulae that are ...
Page 181
... ultra - violet 3727 A radiations ; " by Hartmann's color - screen photographs of the Orion nebula , confirming and extending Mitchell's results ; 62 by Wolf's and Burns's objective - prism spectrograms of the ring nebula in Lyra , which ...
... ultra - violet 3727 A radiations ; " by Hartmann's color - screen photographs of the Orion nebula , confirming and extending Mitchell's results ; 62 by Wolf's and Burns's objective - prism spectrograms of the ring nebula in Lyra , which ...
Page 194
... ultra - violet to Hẞ with practically the same faithfulness to detail that characterizes a direct photograph . Figure 2 of plate L illustrates to advantage the definition obtainable with it under the best conditions . The diameters of ...
... ultra - violet to Hẞ with practically the same faithfulness to detail that characterizes a direct photograph . Figure 2 of plate L illustrates to advantage the definition obtainable with it under the best conditions . The diameters of ...
Page 196
... violet 3 0 blue - violet 1916 Aug. 31.92 753 g ( slitless ) 4 0 ultra - violet A large dim nebula , nearly circular in outline , brightest at the outer edge , and showing con- siderable structure . There is a comparatively bright ...
... violet 3 0 blue - violet 1916 Aug. 31.92 753 g ( slitless ) 4 0 ultra - violet A large dim nebula , nearly circular in outline , brightest at the outer edge , and showing con- siderable structure . There is a comparatively bright ...
Page 199
... violet ultra - violet A slightly elliptical ring lying on a uniformly illuminated circular disc . The outer diameter of the ring is about 1812 " and that of the background 40 " . There is a very strong central star . 4686A gives an ...
... violet ultra - violet A slightly elliptical ring lying on a uniformly illuminated circular disc . The outer diameter of the ring is about 1812 " and that of the background 40 " . There is a very strong central star . 4686A gives an ...
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