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 |
À l'intérieur du livre
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Page 52
... inclination of the nebular plane to the line of sight should make them least dis- tinct , in general , where they cross the minor axis . A familiar example of this effect is the Cassini division in Saturn's rings , always much more ...
... inclination of the nebular plane to the line of sight should make them least dis- tinct , in general , where they cross the minor axis . A familiar example of this effect is the Cassini division in Saturn's rings , always much more ...
Page 53
... inclination of the nebular plane to the line of sight , this asymmetry , when obtain- ing , should serve to give the quadrant of the inclination as well . It is difficult to resist the impression , on studying carefully the original ...
... inclination of the nebular plane to the line of sight , this asymmetry , when obtain- ing , should serve to give the quadrant of the inclination as well . It is difficult to resist the impression , on studying carefully the original ...
Page 66
... inclinations of the equatorial plane of 0 ° , 15 ° , 30 ° , 45 ° , and 60 ° , respectively , to the line of sight ... inclination increases to 90 ° , finally showing a circular ring of the general appearance of the central projection ...
... inclinations of the equatorial plane of 0 ° , 15 ° , 30 ° , 45 ° , and 60 ° , respectively , to the line of sight ... inclination increases to 90 ° , finally showing a circular ring of the general appearance of the central projection ...
Page 69
... inclination of the equatorial plane to the line of sight of 0 ° ( the projected form for this inclination is illustrated in the last form in Figure 83 ) . Following this are shown the projected images for inclinations of the equatorial ...
... inclination of the equatorial plane to the line of sight of 0 ° ( the projected form for this inclination is illustrated in the last form in Figure 83 ) . Following this are shown the projected images for inclinations of the equatorial ...
Page 81
... 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. , 418 ( R.A. 5h 23m ) is an ...
... 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. , 418 ( R.A. 5h 23m ) is an ...
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