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 20
... region , all very faint and small , with the exception of 908 , which is a fine , bright , somewhat irregular spiral , 4 ' x 13 in p.a. 172 ° . The nucleus is bright and stellar ; there are a number of almost stellar condensations ; the ...
... region , all very faint and small , with the exception of 908 , which is a fine , bright , somewhat irregular spiral , 4 ' x 13 in p.a. 172 ° . The nucleus is bright and stellar ; there are a number of almost stellar condensations ; the ...
Page 22
... Region of T Tauri and Hind's variable nebula . This object is small and ir- regular , and has been uniformly of exceeding faintness on all plates taken between 1899 and 1917. T Tauri has an interesting cone - shaped nebulous wing , 4 ...
... Region of T Tauri and Hind's variable nebula . This object is small and ir- regular , and has been uniformly of exceeding faintness on all plates taken between 1899 and 1917. T Tauri has an interesting cone - shaped nebulous wing , 4 ...
Page 23
... region is a dark bay which juts into and bifurcates I 434 at a point about 30 ' s . of . This is 5 ' wide and 4 ' deep , like an ink- blot except for a faint wisp in its northern portion , and as clear - cut and sharp as a knife ...
... region is a dark bay which juts into and bifurcates I 434 at a point about 30 ' s . of . This is 5 ' wide and 4 ' deep , like an ink- blot except for a faint wisp in its northern portion , and as clear - cut and sharp as a knife ...
Page 24
... region . The brighter portion is about 10 ′ in diameter , fairly bright , and shows a number of irregular lanes and one clear - cut " bay " on the north which strongly suggests dark matter . There are much fainter patches north and ...
... region . The brighter portion is about 10 ′ in diameter , fairly bright , and shows a number of irregular lanes and one clear - cut " bay " on the north which strongly suggests dark matter . There are much fainter patches north and ...
Page 25
... region was carefully checked . Examination with the slitless spectroscope shows no object with bright - line spectrum in this region . O s.n. Praesepe cluster . Stars not nebulous with an exposure of 2h , 14 s.n. Planetary . 1 s.n. A ...
... region was carefully checked . Examination with the slitless spectroscope shows no object with bright - line spectrum in this region . O s.n. Praesepe cluster . Stars not nebulous with an exposure of 2h , 14 s.n. Planetary . 1 s.n. A ...
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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