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
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Page 14
... galactic pole , while less than 20 % of the " Selected Areas " were found in the same region . In order to test this objection , as far as it may be applied to the present counts , I have plotted in " 12 12 Y S S The Position of the ...
... galactic pole , while less than 20 % of the " Selected Areas " were found in the same region . In order to test this objection , as far as it may be applied to the present counts , I have plotted in " 12 12 Y S S The Position of the ...
Page 15
... galactic north polar area , it will be advisable to consider this area separately . Assuming that the 117 regions in this area , amounting to 87,75 square degrees , are sufficiently uniform in their distribution to represent adequately ...
... galactic north polar area , it will be advisable to consider this area separately . Assuming that the 117 regions in this area , amounting to 87,75 square degrees , are sufficiently uniform in their distribution to represent adequately ...
Page 16
... galactic north polar region . It is certain that the small nebulae fre- quently show a gregarious tendency ; occasionally one - half of a plate will record many small spirals while the other half records very few ; the remarkable region ...
... galactic north polar region . It is certain that the small nebulae fre- quently show a gregarious tendency ; occasionally one - half of a plate will record many small spirals while the other half records very few ; the remarkable region ...
Page 17
... galactic pole , happened to strike regions of few small nebulae . Had he changed to include four such regions as the following : α δ Small nebulae 11h 9m + 55 ° 34 ' 107 11 22 +17 46 69 12 15 12 55 555 +6 1 81 +28 30 304 561 his ...
... galactic pole , happened to strike regions of few small nebulae . Had he changed to include four such regions as the following : α δ Small nebulae 11h 9m + 55 ° 34 ' 107 11 22 +17 46 69 12 15 12 55 555 +6 1 81 +28 30 304 561 his ...
Page 49
... galactic manifestations of occulting material as contributing , though perhaps but remotely , to the subject under discussion . 1. Photographs and star - counts agree in showing a marked falling off in the number of stars . in the ...
... galactic manifestations of occulting material as contributing , though perhaps but remotely , to the subject under discussion . 1. Photographs and star - counts agree in showing a marked falling off in the number of stars . 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