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 40
... Sept. 13 ) shows no nebulosity . 3 s.n. Nearly round , 0'4 in diameter ; bright center . Faint two - branched rather open spiral with almost stellar nucleus . diameter . Moderately bright narrow oval 0.8 long ; perhaps spiral . 1 : 8 x ...
... Sept. 13 ) shows no nebulosity . 3 s.n. Nearly round , 0'4 in diameter ; bright center . Faint two - branched rather open spiral with almost stellar nucleus . diameter . Moderately bright narrow oval 0.8 long ; perhaps spiral . 1 : 8 x ...
Page 57
... Sept. 5 ; 1908 , July 8 ; 1914 , July 26 ; 1916 , Sept. 28 , agree in showing the nucleus as nearly 111⁄2 magn . photographically , with no certain evidence of variation . The inner ring is somewhat irregular , with a fainter portion at ...
... Sept. 5 ; 1908 , July 8 ; 1914 , July 26 ; 1916 , Sept. 28 , agree in showing the nucleus as nearly 111⁄2 magn . photographically , with no certain evidence of variation . The inner ring is somewhat irregular , with a fainter portion at ...
Page 66
... , 45 ° , 60 ° , and 90 ° , respectively . secured by Mr. Wright pointing to variations in the condition. Fig . 80 - Sections and projections of homogeneous oblate spheroidal shells . Fig . 4 Spectrm of N.G.C. 40. 1917 Sept. 22.
... , 45 ° , 60 ° , and 90 ° , respectively . secured by Mr. Wright pointing to variations in the condition. Fig . 80 - Sections and projections of homogeneous oblate spheroidal shells . Fig . 4 Spectrm of N.G.C. 40. 1917 Sept. 22.
Page 85
... Sept. 22 ) . The section of Hẞ correspond- ing to the north ansa of the nebula is offset perceptibly to the violet . However , the character of the line must not be described too minutely , as it is under - exposed for the ansae and the ...
... Sept. 22 ) . The section of Hẞ correspond- ing to the north ansa of the nebula is offset perceptibly to the violet . However , the character of the line must not be described too minutely , as it is under - exposed for the ansae and the ...
Page 85
... scale four times vertical . ) Fig . 15 - Spectrum of N.G.C. , 418. 1916 Nov. 16 . 8 -12 ° 25 ′ N.G.C. 246. a = = Fig . 4 Spectrm of N.G.C. 40. 1917 Sept. 22 . Excesses and deficiencies of observed radial velocity ,. PLATE XXVII.
... scale four times vertical . ) Fig . 15 - Spectrum of N.G.C. , 418. 1916 Nov. 16 . 8 -12 ° 25 ′ N.G.C. 246. a = = Fig . 4 Spectrm of N.G.C. 40. 1917 Sept. 22 . Excesses and deficiencies of observed radial velocity ,. PLATE XXVII.
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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