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 30
... elliptical ring 35 x 1 ' in p.a. 95 ° ; exceedingly faint matter outside brings the total length to nearly 8 ' . Bright , rather irregular matter in the vicinity of the nucleus , which is elongated and shows well in a 5m exposure . See ...
... elliptical ring 35 x 1 ' in p.a. 95 ° ; exceedingly faint matter outside brings the total length to nearly 8 ' . Bright , rather irregular matter in the vicinity of the nucleus , which is elongated and shows well in a 5m exposure . See ...
Page 48
... elliptical projections . This , however , is not found to be the case . In the relatively frequent instances where the greatly elongated spirals show any lack of symmetry , such asymmetry is almost invariably along the minor axis , and ...
... elliptical projections . This , however , is not found to be the case . In the relatively frequent instances where the greatly elongated spirals show any lack of symmetry , such asymmetry is almost invariably along the minor axis , and ...
Page 52
... elliptical spirals . There appears to be no valid reason for separating the edgewise spirals , as a class , from spirals in general ; these classes merge one into the other by imperceptible gradations . Vacant lanes should show , in ...
... elliptical spirals . There appears to be no valid reason for separating the edgewise spirals , as a class , from spirals in general ; these classes merge one into the other by imperceptible gradations . Vacant lanes should show , in ...
Page 27
... elliptical disk , which is 8 " X 6 " in p . a . 10 ° in a 5 " exposure . An elongated brighter patch is in the center . Quite bright ; the central portions just show in 30 % on S23 . Rel . Exp . 2 . Fig . 6 Fig . 6a Fig . 7 N.G.C. 1501 ...
... elliptical disk , which is 8 " X 6 " in p . a . 10 ° in a 5 " exposure . An elongated brighter patch is in the center . Quite bright ; the central portions just show in 30 % on S23 . Rel . Exp . 2 . Fig . 6 Fig . 6a Fig . 7 N.G.C. 1501 ...
Page 29
... elliptical ring 14 " X 11 " in outside diameter , and about 12 " X 10 " along its central line ; p . a . 163 ° . Long exposure on a backed plate shows the object as somewhat larger , doubtless a halation effect ; there are no ansae or ...
... elliptical ring 14 " X 11 " in outside diameter , and about 12 " X 10 " along its central line ; p . a . 163 ° . Long exposure on a backed plate shows the object as somewhat larger , doubtless a halation effect ; there are no ansae or ...
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