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 21
... diameter ; no detail . Spindle 1 ' long ; no details visible , but probably an edgewise spiral . An unusually interesting two - branched spiral of the p - type , 6 ′ x 3 ′ in p.a. 95 ° ; the whorls start abruptly from the extremities of ...
... diameter ; no detail . Spindle 1 ' long ; no details visible , but probably an edgewise spiral . An unusually interesting two - branched spiral of the p - type , 6 ′ x 3 ′ in p.a. 95 ° ; the whorls start abruptly from the extremities of ...
Page 22
... diameter . Main portion somewhat resembles an . Exceedingly faint diffuse nebu- losity about a tenth magn . star 12 ' n.f. 0 s.n. Small , nearly round , irregular spiral , 0.7 in diameter . Oval ; 15 long ; rather large , brighter ...
... diameter . Main portion somewhat resembles an . Exceedingly faint diffuse nebu- losity about a tenth magn . star 12 ' n.f. 0 s.n. Small , nearly round , irregular spiral , 0.7 in diameter . Oval ; 15 long ; rather large , brighter ...
Page 23
... diameter , surrounding a star of magn . 8.5 . But the most remarkable feature of the region is a dark bay which juts into and bifurcates I 434 at a point about 30 ' s . of . This is 5 ' wide and 4 ' deep , like an ink- blot except for a ...
... diameter , surrounding a star of magn . 8.5 . But the most remarkable feature of the region is a dark bay which juts into and bifurcates I 434 at a point about 30 ' s . of . This is 5 ' wide and 4 ' deep , like an ink- blot except for a ...
Page 24
... diameter . O s.n. Vol . VIII , Plate 16. Moderately bright diffuse nebulosity filling , with its fainter extensions , an area nearly 16 ′ in diameter , surrounding a 7.3 magn . star . A wide , irregular , dark lane crosses it from east ...
... diameter . O s.n. Vol . VIII , Plate 16. Moderately bright diffuse nebulosity filling , with its fainter extensions , an area nearly 16 ′ in diameter , surrounding a 7.3 magn . star . A wide , irregular , dark lane crosses it from east ...
Page 25
... diameter . 5 s.n. Very bright , rather large nucleus , surrounded by bright nebulosity ; farther out , diameter about 0 : 7 , is a strong , nearly perfect ring formed by the union of two whorls ; much fainter whorls outside this ring ...
... diameter . 5 s.n. Very bright , rather large nucleus , surrounded by bright nebulosity ; farther out , diameter about 0 : 7 , is a strong , nearly perfect ring formed by the union of two whorls ; much fainter whorls outside this ring ...
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