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 77
... km . per sec . approach and 48.5 km . per sec . recession . About a decade later Keeler's results for four or five of the nebulae were confirmed at several observatories , by the photographic method ; but up to the year 1912 the ...
... km . per sec . approach and 48.5 km . per sec . recession . About a decade later Keeler's results for four or five of the nebulae were confirmed at several observatories , by the photographic method ; but up to the year 1912 the ...
Page 81
... km . per sec . PROBABLE ERRORS OF THE RESULTS - The question of the probable error of the observed velocity of each object is not an easy one to answer , partly owing to the variety of conditions under which the individual observations ...
... km . per sec . PROBABLE ERRORS OF THE RESULTS - The question of the probable error of the observed velocity of each object is not an easy one to answer , partly owing to the variety of conditions under which the individual observations ...
Page 82
... km . per sec . in the brighter parts of the nebular structure would have been detected . Keeler's comment on the character of the lines from the brighter parts of the Orion nebula is that " The lines always appeared fine and sharp ; the ...
... km . per sec . in the brighter parts of the nebular structure would have been detected . Keeler's comment on the character of the lines from the brighter parts of the Orion nebula is that " The lines always appeared fine and sharp ; the ...
Page 83
... km . per sec . , and agree with ours in a general confirmation of the Marseilles results . Professor Keeler , in 1891 , looked for a rotation effect in the spectrum of N.G.C. 3242 ( G.C. 2102 , R.A. = 10h 20m ) , with negative results ...
... km . per sec . , and agree with ours in a general confirmation of the Marseilles results . Professor Keeler , in 1891 , looked for a rotation effect in the spectrum of N.G.C. 3242 ( G.C. 2102 , R.A. = 10h 20m ) , with negative results ...
Page 87
... km . per sec.10 Slipher obtained -263 km . from the bright lines in N.G.C. 598 , probably referring to the detail of structure catalogued as N.G.C. 604.11 11 N.G.C. 650-651 . a = 1h 36m0 ; 8 = + 51 ° 4 ′ ; λ = 43 ° 28 ' ; B = + 37 ° 44 ...
... km . per sec.10 Slipher obtained -263 km . from the bright lines in N.G.C. 598 , probably referring to the detail of structure catalogued as N.G.C. 604.11 11 N.G.C. 650-651 . a = 1h 36m0 ; 8 = + 51 ° 4 ′ ; λ = 43 ° 28 ' ; B = + 37 ° 44 ...
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