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 13
... central portion of this remarkable region is reproduced in figure 3. Twenty - six other regions were counted as well ... central portions having an area of about six - tenths of a square degree , or less . I have DESCRIPTIONS OF 762 ...
... central portion of this remarkable region is reproduced in figure 3. Twenty - six other regions were counted as well ... central portions having an area of about six - tenths of a square degree , or less . I have DESCRIPTIONS OF 762 ...
Page 18
... central portion is about 2 ' in diameter , showing traces of rather irregular spiral structure ; the nucleus is almost stellar . There are two small dark patches near the brighter central portion . Very much fainter matter forms the outer ...
... central portion is about 2 ' in diameter , showing traces of rather irregular spiral structure ; the nucleus is almost stellar . There are two small dark patches near the brighter central portion . Very much fainter matter forms the outer ...
Page 19
... Center very bright , with much fainter matter outside . No spiral structure discernible . 28 s.n. Very small and ... central portion and a sharp nucleus ; 2 ' long ; con- siderably elongated ; no whorls visible . Vol . VIII , Plate 3 ...
... Center very bright , with much fainter matter outside . No spiral structure discernible . 28 s.n. Very small and ... central portion and a sharp nucleus ; 2 ' long ; con- siderably elongated ; no whorls visible . Vol . VIII , Plate 3 ...
Page 20
... center . Central portion fairly bright . See Abs . Eff . Slightly oval ; 0.5 in diameter ; quite bright ; no whorls or structure discernible . A fine , open spiral 35 x 1.8 ; the whorls are very faint ; nucleus almost stellar . 32 s.n. ...
... center . Central portion fairly bright . See Abs . Eff . Slightly oval ; 0.5 in diameter ; quite bright ; no whorls or structure discernible . A fine , open spiral 35 x 1.8 ; the whorls are very faint ; nucleus almost stellar . 32 s.n. ...
Page 21
... central portions , near the bright nucleus , which is apparently not stellar . The whorls are very compactly arranged . 11 s.n. - 8 0 A fairly bright , condensed , very patchy spiral 2 : 2 x 0.8 in p.a. 30 ° . Very faint stellar nucleus ...
... central portions , near the bright nucleus , which is apparently not stellar . The whorls are very compactly arranged . 11 s.n. - 8 0 A fairly bright , condensed , very patchy spiral 2 : 2 x 0.8 in p.a. 30 ° . Very faint stellar nucleus ...
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