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 65
... rotation , that the equatorial plane of the rotating planetary is indicated by the position of the major axis , and that the polar diameter corresponds to the minor axis ( a relation which will be precisely indicated only when the ...
... rotation , that the equatorial plane of the rotating planetary is indicated by the position of the major axis , and that the polar diameter corresponds to the minor axis ( a relation which will be precisely indicated only when the ...
Page 68
... rotation . So also in 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 ...
... rotation . So also in 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 ...
Page 69
... rotation . It is very unfortunate that it is practically impossible , because of the intrinsic faintness of the nebular matter , to make a series of radial velocity determinations at various points near the ends of the minor and major ...
... rotation . It is very unfortunate that it is practically impossible , because of the intrinsic faintness of the nebular matter , to make a series of radial velocity determinations at various points near the ends of the minor and major ...
Page 81
... rotation , and the resulting inclination of the nebular lines , combined with some unavoidable inaccuracy in guiding , is liable to affect the accuracy of the observed velocity of the nebula as a whole . The beautiful planetary N.G.C. ...
... rotation , and the resulting inclination of the nebular lines , combined with some unavoidable inaccuracy in guiding , is liable to affect the accuracy of the observed velocity of the nebula as a whole . The beautiful planetary N.G.C. ...
Page 83
... rotation effect in the spectrum of N.G.C. 3242 ( G.C. 2102 , R.A. = 10h 20m ) , with negative results . In his opinion a difference of velocity for two parts of the nebula could not have been detected with his apparatus if this ...
... rotation effect in the spectrum of N.G.C. 3242 ( G.C. 2102 , R.A. = 10h 20m ) , with negative results . In his opinion a difference of velocity for two parts of the nebula could not have been detected with his apparatus if this ...
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