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 25
... position . There is a small spiral ( p - type ? ) at 8h 42m7 , + 78 ° 58 ' , with a faint star l ' n.f. Slightly ... angle . See Abs . Eff . 15 s.n. Vol . VIII , Plate 20. A beautiful , bright spiral 12 ' x 5 ' in p.a. 18 ° . Large ...
... position . There is a small spiral ( p - type ? ) at 8h 42m7 , + 78 ° 58 ' , with a faint star l ' n.f. Slightly ... angle . See Abs . Eff . 15 s.n. Vol . VIII , Plate 20. A beautiful , bright spiral 12 ' x 5 ' in p.a. 18 ° . Large ...
Page 35
... position . Both are very small , nearly round ; no structure apparent ... angle , with most of the matter in one large whorl . The nucleus is almost ... angle with the major axis . See Abs . Eff . 37 s.n. Almost stellar . A faint oval 0 ...
... position . Both are very small , nearly round ; no structure apparent ... angle , with most of the matter in one large whorl . The nucleus is almost ... angle with the major axis . See Abs . Eff . 37 s.n. Almost stellar . A faint oval 0 ...
Page 65
... angle in space . ( b ) Relatively thick shells will approximate in ... position of the major axis , and that the polar diameter corresponds to the ... position in space , for all these planetaries are almost precisely symmetrical with ...
... angle in space . ( b ) Relatively thick shells will approximate in ... position of the major axis , and that the polar diameter corresponds to the ... position in space , for all these planetaries are almost precisely symmetrical with ...
Page 67
... position in space ( except when the equatorial plane makes an angle of nearly 90 ° with the line of sight , noted below ) the projected image will be symmetrical with regard to a major axis , and will be fainter along this axis . . ( c ) ...
... position in space ( except when the equatorial plane makes an angle of nearly 90 ° with the line of sight , noted below ) the projected image will be symmetrical with regard to a major axis , and will be fainter along this axis . . ( c ) ...
Page 68
... position . The intensity curves along the principal axes , and the projected forms , are shown for inclinations of ... angle of 90 ° to 70 ° with the line of sight , this form will exhibit true ring effects ; the central portions of such ...
... position . The intensity curves along the principal axes , and the projected forms , are shown for inclinations of ... angle of 90 ° to 70 ° with the line of sight , this form will exhibit true ring effects ; the central portions of such ...
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