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 16
... fainter , and of nebular texture , but the very faint nebulae are obliterated by the blurring and spreading of the image . These " blurring factors " and the form of the extra - axial image in optical systems have been investigated by ...
... fainter , and of nebular texture , but the very faint nebulae are obliterated by the blurring and spreading of the image . These " blurring factors " and the form of the extra - axial image in optical systems have been investigated by ...
Page 18
... fainter matter forms the outer portion of the nebula in an oval about 8 ' x 3 ' ; no whorls can be made out in this outer por- tion ; doubtless a spiral of the Andromeda type . 2 s.n. The well - known companion south of the nebula in ...
... fainter matter forms the outer portion of the nebula in an oval about 8 ' x 3 ' ; no whorls can be made out in this outer por- tion ; doubtless a spiral of the Andromeda type . 2 s.n. The well - known companion south of the nebula in ...
Page 19
... fainter extension at the south . Nucleus 13 magn .; almost stellar . Round ; 0.5 in diameter . Center very bright , with much fainter matter outside . No spiral structure discernible . 28 s.n. Very small and faint ; nearly round ...
... fainter extension at the south . Nucleus 13 magn .; almost stellar . Round ; 0.5 in diameter . Center very bright , with much fainter matter outside . No spiral structure discernible . 28 s.n. Very small and faint ; nearly round ...
Page 21
... fainter extensions ; 0.5 long ; perhaps spiral . Bright center ; nearly round ; 0 : 4 in diameter ; no detail . Spindle 1 ' long ; no details visible , but probably an edgewise spiral . An unusually interesting two - branched spiral of ...
... fainter extensions ; 0.5 long ; perhaps spiral . Bright center ; nearly round ; 0 : 4 in diameter ; no detail . Spindle 1 ' long ; no details visible , but probably an edgewise spiral . An unusually interesting two - branched spiral of ...
Page 22
... fainter extensions bring the total length to nearly a degree . 0 s.n. X.G.C. a 8 3 41 I 351 1499 3 41.1 3 56.9 +24 +34 45 +36 8 1501 3 58.4 +60 39 Planetary . 0 s.n. 1514 4 2.9 +30 33 Planetary . 7 s.n. 1535 4 9.6 1530 4 10.7 -13 0 +75 ...
... fainter extensions bring the total length to nearly a degree . 0 s.n. X.G.C. a 8 3 41 I 351 1499 3 41.1 3 56.9 +24 +34 45 +36 8 1501 3 58.4 +60 39 Planetary . 0 s.n. 1514 4 2.9 +30 33 Planetary . 7 s.n. 1535 4 9.6 1530 4 10.7 -13 0 +75 ...
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