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 81
... measures of radial velocities of bright - line nebulae with 3 - prism dispersion , when the slit is relatively long and the nebular lines frequently under - exposed , has caused us to fear a systematic error of appreciable size from ...
... measures of radial velocities of bright - line nebulae with 3 - prism dispersion , when the slit is relatively long and the nebular lines frequently under - exposed , has caused us to fear a systematic error of appreciable size from ...
Page 83
... measuring the radial velocities of all available bright- line nebulae , we ... lines were observed by Keeler to be fine and sharp in the spectrum of the ... dispersion of only one prism and most of the plates were under - exposed ...
... measuring the radial velocities of all available bright- line nebulae , we ... lines were observed by Keeler to be fine and sharp in the spectrum of the ... dispersion of only one prism and most of the plates were under - exposed ...
Page 85
... lines , the width was 0.038 mm . We have neglected to secure accurate data ... dispersion have been tested for evidence of internal relative velocity ... measures of the lines , the prismatic curvature has been removed . A weale placed at ...
... lines , the width was 0.038 mm . We have neglected to secure accurate data ... dispersion have been tested for evidence of internal relative velocity ... measures of the lines , the prismatic curvature has been removed . A weale placed at ...
Page 85
... lines are oriented in the usual way ; ie . , with the violet to the left ... measures for radial velocity are based upon Hẞ alone . The central star in N.G.C. 40 ... dispersion , but the section of the nebular Hẞ line corresponding to the ...
... lines are oriented in the usual way ; ie . , with the violet to the left ... measures for radial velocity are based upon Hẞ alone . The central star in N.G.C. 40 ... dispersion , but the section of the nebular Hẞ line corresponding to the ...
Page 88
... Dispersion Measurer Lines Vel . V Wt . Slit Remarks 1914 Oct. 23.71 5.3 3 - pr . 5 - in . Moore N1 N2 -17 -15 1 ... measure 90 ° short N , not very good No trace of Hẞ Miss Hobe N , N2 -23 No. 651 , V — 20.8 Mean , 650-651 , ▽ -23.6 N.G.C. , ...
... Dispersion Measurer Lines Vel . V Wt . Slit Remarks 1914 Oct. 23.71 5.3 3 - pr . 5 - in . Moore N1 N2 -17 -15 1 ... measure 90 ° short N , not very good No trace of Hẞ Miss Hobe N , N2 -23 No. 651 , V — 20.8 Mean , 650-651 , ▽ -23.6 N.G.C. , ...
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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