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 12
... figure 2 , where several examples of this type are given . 4 Varying estimates have been made as to the probable total number of the spiral nebulae . Director Keeler , early in the course of his programme of nebular photography and ...
... figure 2 , where several examples of this type are given . 4 Varying estimates have been made as to the probable total number of the spiral nebulae . Director Keeler , early in the course of his programme of nebular photography and ...
Page 13
... figure 3. Twenty - six other regions were counted as well ; these are plates of sufficient exposure taken on some of the Kapteyn regions , and other special regions of the sky , which do not contain any object warranting a separate ...
... figure 3. Twenty - six other regions were counted as well ; these are plates of sufficient exposure taken on some of the Kapteyn regions , and other special regions of the sky , which do not contain any object warranting a separate ...
Page 14
... figure 1 the 439 regions in which counts were made . It will be seen from this figure that the distribution of the regions may well be regarded as an approximately uniform one . There is , it is true , a marked concentration of regions ...
... figure 1 the 439 regions in which counts were made . It will be seen from this figure that the distribution of the regions may well be regarded as an approximately uniform one . There is , it is true , a marked concentration of regions ...
Page 17
... figure be perfection itself , as is undoubtedly the case with the 60 - inch reflector . The reflector of small angular aperture will give a usable field of larger angular diameter than will a reflector of great angular aperture , while ...
... figure be perfection itself , as is undoubtedly the case with the 60 - inch reflector . The reflector of small angular aperture will give a usable field of larger angular diameter than will a reflector of great angular aperture , while ...
Page 19
... figure 4 . 0 s.n. Described as vF , eeL by , Wolf . There are a number of small nebulae in this region , but no trace of II 1613 in an exposure of 1h 44m . 33 s.n. Rather faint , considerably elongated spiral 15 in length ; nucleus well ...
... figure 4 . 0 s.n. Described as vF , eeL by , Wolf . There are a number of small nebulae in this region , but no trace of II 1613 in an exposure of 1h 44m . 33 s.n. Rather faint , considerably elongated spiral 15 in length ; nucleus well ...
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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