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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Résultats 16-20 sur 60
Page 40
... stars of magn . 9-10 . The struc- ture is quite irregular ; there is a long curved ... star of magn . 9.5 . The nebula shows a great deal of structural detail ... Central portion very bright , with an almost stellar nucleus . Whorls near ...
... stars of magn . 9-10 . The struc- ture is quite irregular ; there is a long curved ... star of magn . 9.5 . The nebula shows a great deal of structural detail ... Central portion very bright , with an almost stellar nucleus . Whorls near ...
Page 49
... central por- tions of this large spiral ; there is very little matter on the lower side of the nucleus . 5005 ( 37 ) ... star - counts agree in showing a marked falling off in the number of stars . in the vicinity of several of the great ...
... central por- tions of this large spiral ; there is very little matter on the lower side of the nucleus . 5005 ( 37 ) ... star - counts agree in showing a marked falling off in the number of stars . in the vicinity of several of the great ...
Page 54
... central star or collection of stars of sufficient brightness to produce the observed effects of illumination in the outlying parts of the nebula . Many spirals show such bright centers ; in fully as many others the central star or ...
... central star or collection of stars of sufficient brightness to produce the observed effects of illumination in the outlying parts of the nebula . Many spirals show such bright centers ; in fully as many others the central star or ...
Page 25
... Central star about magn . 10. The nebula resembles a truncated ring , from the ends of which extend much fainter wisps . The brighter central portion is 38 " X 35 " in p . a . 14 ° , while the total length along this axis is about 60 ...
... Central star about magn . 10. The nebula resembles a truncated ring , from the ends of which extend much fainter wisps . The brighter central portion is 38 " X 35 " in p . a . 14 ° , while the total length along this axis is about 60 ...
Page 27
... central star can be made out and is perhaps as bright as magn . 14. The nebula shows a minute 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 ...
... central star can be made out and is perhaps as bright as magn . 14. The nebula shows a minute 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 ...
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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