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 18
... p.a. 90 ° . 55 s.n. Description in Bull . 248 erroneous ; not yet photographed . A fine , symmetrical , rather open ... long ; almost stellar nucleus . Relatively bright center ; the spiral whorls merge into a very faint oval ring 1.8 long ...
... p.a. 90 ° . 55 s.n. Description in Bull . 248 erroneous ; not yet photographed . A fine , symmetrical , rather open ... long ; almost stellar nucleus . Relatively bright center ; the spiral whorls merge into a very faint oval ring 1.8 long ...
Page 19
... p.a. 175 ° . Nucleus stellar ; many almost stellar condensations . Whorls somewhat irregular , and indistinct . 22 ... long ; moderately bright . Probably spiral ; an absorbing lane is suspected . Slightly oval ; 1 ' long ; nucleus ...
... p.a. 175 ° . Nucleus stellar ; many almost stellar condensations . Whorls somewhat irregular , and indistinct . 22 ... long ; moderately bright . Probably spiral ; an absorbing lane is suspected . Slightly oval ; 1 ' long ; nucleus ...
Page 20
... long in p.a. 80 ° , with a clear - cut ab- sorption lane passing along its length at one side of the center . Central portion fairly bright . See Abs . Eff . Slightly oval ; 0.5 in diameter ; quite bright ; no whorls or structure ...
... long in p.a. 80 ° , with a clear - cut ab- sorption lane passing along its length at one side of the center . Central portion fairly bright . See Abs . Eff . Slightly oval ; 0.5 in diameter ; quite bright ; no whorls or structure ...
Page 21
... p.a. 153 ° . Stellar nucleus ; several strong condensations . There are vacant spaces about the two main ... long , slightly oval . The nucleus is almost stellar and surrounded by fairly bright matter , from which proceed two faint whorls ...
... p.a. 153 ° . Stellar nucleus ; several strong condensations . There are vacant spaces about the two main ... long , slightly oval . The nucleus is almost stellar and surrounded by fairly bright matter , from which proceed two faint whorls ...
Page 22
... long . " A very faint , long strip of diffuse nebulosity , 30 ′ long in its brighter por- tion , 3 ' to 5 ' wide ... p.a. 150 ° , which appears either to be variable , or to rotate so as to be concealed at times . Cf. Publ . Astr . Soc .
... long . " A very faint , long strip of diffuse nebulosity , 30 ′ long in its brighter por- tion , 3 ' to 5 ' wide ... p.a. 150 ° , which appears either to be variable , or to rotate so as to be concealed at times . Cf. Publ . Astr . Soc .
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