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
... brighter small nebulae can be picked up in these portions of the plate ; the majority of the small nebulae are found in the more central portions having an area of about six - tenths of a square degree , or less . I have DESCRIPTIONS OF ...
... brighter small nebulae can be picked up in these portions of the plate ; the majority of the small nebulae are found in the more central portions having an area of about six - tenths of a square degree , or less . I have DESCRIPTIONS OF ...
Page 16
... brighter of the small nebulae can be detected in these regions . Almost stellar and moderately bright nebulae are easily detected at such distances from the optical axis , as they will show fan - shaped images which are as large as ...
... brighter of the small nebulae can be detected in these regions . Almost stellar and moderately bright nebulae are easily detected at such distances from the optical axis , as they will show fan - shaped images which are as large as ...
Page 18
... brighter center ; 0 : 3 in diameter ; structureless . star follows 30 " , but is not connected with the nebula . None of the many small nebulae on this plate appear to coincide with N. G. C. 21 ( Swift ) . 41 s.n. A small , fairly ...
... brighter center ; 0 : 3 in diameter ; structureless . star follows 30 " , but is not connected with the nebula . None of the many small nebulae on this plate appear to coincide with N. G. C. 21 ( Swift ) . 41 s.n. A small , fairly ...
Page 19
... brighter portions of 598. It is uncertain whether there is an actual stellar nucleus . A multitude of stellar condensations in the whorls ; the spiral which furnishes the best known example of " resolution " into stars . 7 s.n. N.G.C. ...
... brighter portions of 598. It is uncertain whether there is an actual stellar nucleus . A multitude of stellar condensations in the whorls ; the spiral which furnishes the best known example of " resolution " into stars . 7 s.n. N.G.C. ...
Page 20
... brighter ; both have almost stellar nuclei , and seem to be physically connected . Very faint , elongated spiral about 1 ' long . A very faint patch 2 : 3 s.p. is probably 760 . Not given in the N. G. C. though much more conspicuous ...
... brighter ; both have almost stellar nuclei , and seem to be physically connected . Very faint , elongated spiral about 1 ' long . A very faint patch 2 : 3 s.p. is probably 760 . Not given in the N. G. C. though much more conspicuous ...
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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