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 27
... minor axis , and fade out at the ends of the major axis . 2 ' long , somewhat oval ; a p - type spiral with a very bright , round nucleus . 9 s.n. A small , rather regular , rather faint spiral , 1 ' in diameter , with a sharp stellar ...
... minor axis , and fade out at the ends of the major axis . 2 ' long , somewhat oval ; a p - type spiral with a very bright , round nucleus . 9 s.n. A small , rather regular , rather faint spiral , 1 ' in diameter , with a sharp stellar ...
Page 48
... minor axes of their elliptical projections . This , however , is not found to be the case . In the relatively ... axis , and roughly parallel to the major axis of the ellipse . This asymmetry manifests itself frequently in " lanes ...
... minor axes of their elliptical projections . This , however , is not found to be the case . In the relatively ... axis , and roughly parallel to the major axis of the ellipse . This asymmetry manifests itself frequently in " lanes ...
Page 52
... axis and evanescent on the other , and other manifestations of asymmetry parallel to the major axis of such ... minor axis . A familiar example of this effect is the Cassini division in Saturn's rings , always much more easily seen on ...
... axis and evanescent on the other , and other manifestations of asymmetry parallel to the major axis of such ... minor axis . A familiar example of this effect is the Cassini division in Saturn's rings , always much more easily seen on ...
Page 53
... axis . Two theories , other than that which presupposes the presence of whorls of occulting matter , may be men ... minor axis Ends of major axis Nearer end of minor axis 1.00 0.56 0.12 Polarisation effects . These should be expected as ...
... axis . Two theories , other than that which presupposes the presence of whorls of occulting matter , may be men ... minor axis Ends of major axis Nearer end of minor axis 1.00 0.56 0.12 Polarisation effects . These should be expected as ...
Page 27
... minor axis . Relatively faint ; the nebular matter just shows in 20m on S23 . Rel . Exp . 25 . N.G.C. 1514 ; 4h 3m0 ; + 30 ° 30 ' Enlarged 5.3 times from a negative of 1 " 30m exposure time . Central star of magn . 8.8 , surrounded by ...
... minor axis . Relatively faint ; the nebular matter just shows in 20m on S23 . Rel . Exp . 25 . N.G.C. 1514 ; 4h 3m0 ; + 30 ° 30 ' Enlarged 5.3 times from a negative of 1 " 30m exposure time . Central star of magn . 8.8 , surrounded by ...
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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