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
Page 12
... visible , either because these may be very compactly arranged , or because of the small size of the object , and should not be taken to signify that the nebulae thus described are not bona - fide spirals . It is my belief that all the ...
... visible , either because these may be very compactly arranged , or because of the small size of the object , and should not be taken to signify that the nebulae thus described are not bona - fide spirals . It is my belief that all the ...
Page 19
... visible . Vol . VIII , Plate 3. A close rival to the Nebula of Andromeda as the most beautiful spiral known . With its faintest extensions it covers an area at least 55 ' x 40 ' . Messier 33 Trianguli . 588 , 592 , 595 , and 603 are ...
... visible . Vol . VIII , Plate 3. A close rival to the Nebula of Andromeda as the most beautiful spiral known . With its faintest extensions it covers an area at least 55 ' x 40 ' . Messier 33 Trianguli . 588 , 592 , 595 , and 603 are ...
Page 21
... visible , but probably an edgewise spiral . An unusually interesting two - branched spiral of the p - type , 6 ′ x 3 ′ in p.a. 95 ° ; the whorls start abruptly from the extremities of straight extensions on each side of the nucleus ...
... visible , but probably an edgewise spiral . An unusually interesting two - branched spiral of the p - type , 6 ′ x 3 ′ in p.a. 95 ° ; the whorls start abruptly from the extremities of straight extensions on each side of the nucleus ...
Page 30
... visible at the other end . No whorls discernible . 0.8 x 0 : 4 ; bright center ; no spiral structure discernible . An elongated , rather irregular spiral 3 ' x 0.4 in p.a. 90 ° . Nuclear portion fan- shaped ; an irregular dark lane ...
... visible at the other end . No whorls discernible . 0.8 x 0 : 4 ; bright center ; no spiral structure discernible . An elongated , rather irregular spiral 3 ' x 0.4 in p.a. 90 ° . Nuclear portion fan- shaped ; an irregular dark lane ...
Page 34
... visible in any of the very numerous published reproductions , it covers an area about 12 ' x 6 ' in p.a. approximately 30 ° . A sharp stellar nucleus in 5194 , and the whorls show a multitude of stellar condensations . The satellite ...
... visible in any of the very numerous published reproductions , it covers an area about 12 ' x 6 ' in p.a. approximately 30 ° . A sharp stellar nucleus in 5194 , and the whorls show a multitude of stellar condensations . The satellite ...
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