Publications of the Astronomical Society of the Pacific, Volume 12
Astronomical Society of the Pacific., 1900 - Astronomy
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appeared assistants Astronomical attention August axis beginning bright brighter California carried central clear close comet Committee complete computed Crossley declination determination direction Director discovered discovery distance double stars east eastern eclipse elements elongation error exposure extended fact give given half horizon hour important increased interest Italy January July June Jupiter KEELER known less LIBRARY Lick Observatory light magnitude March Mars mass means measures method minutes Miss month Moon morning motion moves nearly nebula night objects observations obtained orbit Pacific pairs passed period photographic planet plate position possible practically present probably Prof Professor Publications received reference reflector refractor rises San Francisco Science Secretary seen Society spectroscopic spectrum telescope tion Train University visible volume western
Page 44 - I then contracted my design, determining to confide in myself, and no longer to solicit auxiliaries, which produced more incumbrance than assistance; by this I obtained at least one advantage, that I set limits to my work, which would in time be ended, though not completed.
Page 168 - While I must leave to others an estimate of the importance of these conclusions, it seems to me that they have a very direct bearing on many, if not all, questions concerning the cosmogony. If, for example, the spiral is the form normally assumed by a contracting nebulous mass, the idea at once suggests itself that the solar system has been evolved from a spiral nebula...
Page 247 - ... hydrogen in Sirius or in Vega. Iron from our mines was line-matched, light for dark, with stellar iron from opposite parts of the celestial sphere. Sodium, which upon the earth is always present with us, was found to be widely diffused through the celestial spaces.
Page 44 - Dictionaries are like watches, the worst is better than none and the best cannot be expected to go quite true.
Page 91 - Herschel is described by him as ' singularly trifid, consisting of three bright and irregularly formed nebulous masses, graduating away insensibly externally, but coming up to a great intensity of light at their interior edges, where they enclose and surround a sort of three-forked rift, or vacant area, abruptly and uncouthly crooked, and quite void of nebulous light. A beautiful triple star is situated precisely on the edge of one of these nebulous masses, just where the interior vacancy forks out...
Page 224 - When I made the first attempt in 1887, with the assistance of Professor Scheiner, to record photographically the displacements of the lines in stellar spectra, and then to measure them as accurately as possible on the spectrograms, it very soon appeared that this constituted a very marked advance in the determination of these motions, which are so significant in stellar astronomy. The accuracy of the observations was increased more than eightfold with the apparatus constructed in 1888; the probable...
Page 147 - ... of Arts and Sciences, and the Henry Draper Medal in 1899 by the National Academy of Sciences. He was a member of the National Academy of Sciences ; an Associate of the American Academy of Arts and Sciences ; a Fellow and Foreign Associate of the Royal Astronomical Society ; a Fellow of the American Association for the Advancement of Science ; a member and officer of the Astronomical and Astrophysical Society of America ; an honorary member of the Toronto Astronomical and Physical Society; the...
Page 211 - the corona is effectively cooler than the bolometer, and appears, therefore, neither to reflect much light from the sun, nor, chiefly by virtue of a high temperature, to give light of its own, but seems rather to be giving light in a manner not associated with a high temperature, or at least with the preponderance of infra-red rays usual in the spectra of hot bodies.
Page 168 - If, for example, the spiral is the form normally assumed by a contracting nebulous mass, the idea at once suggests itself that the solar system has been evolved from a spiral nebula, while the photographs show that the spiral nebula is not, as a rule, characterized by the simplicity attributed to the contracting mass in the nebular hypothesis. This is a question which has already been taken up by Professor Chamberlin and Mr. Moulton of the University of Chicago.
Page 88 - That all the acts appearing in the minutes of the meetings of the Board of Directors of this Society, as having been done by said Board during the past fiscal year, are here now, by this Society, approved and confirmed.