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 7
... Wilson Page 185 PART VI . — The Wave - Lengths of the Nebular Lines and General Observations of the Spectra of the Gaseous Nebulae , by W. H. Wright - - Page 191 PART I DESCRIPTIONS OF 762 NEBULAE AND CLUSTERS PHOTOGRAPHED WITH.
... Wilson Page 185 PART VI . — The Wave - Lengths of the Nebular Lines and General Observations of the Spectra of the Gaseous Nebulae , by W. H. Wright - - Page 191 PART I DESCRIPTIONS OF 762 NEBULAE AND CLUSTERS PHOTOGRAPHED WITH.
Page 65
... spectra of several planetary nebulae , and to this extent such an absorption theory has the support of observation . The writer has shown that rings of occulting matter are a very frequent phenomenon in the outer portions of the spiral ...
... spectra of several planetary nebulae , and to this extent such an absorption theory has the support of observation . The writer has shown that rings of occulting matter are a very frequent phenomenon in the outer portions of the spiral ...
Page 68
... spectra taken with the slit placed on the lobes of 7026 ( 71 ) parallel to the major axis . Against this hypothesis it may be urged that it gives no explanation of the true ring forms with relatively very faint central portions ...
... spectra taken with the slit placed on the lobes of 7026 ( 71 ) parallel to the major axis . Against this hypothesis it may be urged that it gives no explanation of the true ring forms with relatively very faint central portions ...
Page 71
... spectra essentially identical in character . Here the relationships cease ; greater differences of form and structure could scarcely exist than obtain between the small , clear - cut planetaries , and the enormous , tenuous , highly ...
... spectra essentially identical in character . Here the relationships cease ; greater differences of form and structure could scarcely exist than obtain between the small , clear - cut planetaries , and the enormous , tenuous , highly ...
Page 73
... spectra from about 9000 to over 200,000 . This increase of over two thousand per cent has produced but one new object with a spectrum of planetary type . As a further check on this point I have examined seventy - nine small nebulae with ...
... spectra from about 9000 to over 200,000 . This increase of over two thousand per cent has produced but one new object with a spectrum of planetary type . As a further check on this point I have examined seventy - nine small nebulae with ...
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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