The Astrophysical Journal, Volumul 10University of Chicago Press, 1899 "Letters to the Editor" issued as Part 2 and separately paged from v. 148, 1967. Beginning in 2009, the Letters published only online. |
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Pagina
... MOTION IN THE LINE OF SIGHT . F. R. Moulton THE INFLUENCE OF THE PURKINJE PHENOMENON on OBSERVATIONS OF FAINT SPECTRA . W. W. Campbell - RESULTS OF THE PHOTOGRAPHIC OBSERVATIONS OF THE LEONIDS , NOVEMBER 14-15 , 1898 , AT THE YALE ...
... MOTION IN THE LINE OF SIGHT . F. R. Moulton THE INFLUENCE OF THE PURKINJE PHENOMENON on OBSERVATIONS OF FAINT SPECTRA . W. W. Campbell - RESULTS OF THE PHOTOGRAPHIC OBSERVATIONS OF THE LEONIDS , NOVEMBER 14-15 , 1898 , AT THE YALE ...
Pagina 1
... motion in the line of sight . Let A , B , be the mean longitude and latitude of the observed star . O , the Sun's mean longitude at the moment of observation . T , the Sun's longitude at perigee ( 281 ° 20 ′ ) . a , the semi - axis ...
... motion in the line of sight . Let A , B , be the mean longitude and latitude of the observed star . O , the Sun's mean longitude at the moment of observation . T , the Sun's longitude at perigee ( 281 ° 20 ′ ) . a , the semi - axis ...
Pagina 2
... motion , ẞ cannot change more than 49 " in a century while T - λ is increased about 20 ' in the same period . The maximum value of b is about 30 kilometers per second , and c never exceeds 0.50 kilometers per second . It follows that if ...
... motion , ẞ cannot change more than 49 " in a century while T - λ is increased about 20 ' in the same period . The maximum value of b is about 30 kilometers per second , and c never exceeds 0.50 kilometers per second . It follows that if ...
Pagina 14
... motion in the line of sight will be made with a very high degree of precision . If such measurements of relative motion . can be secured for a body moving around the Sun , together with the necessary number of apparent positions , it is ...
... motion in the line of sight will be made with a very high degree of precision . If such measurements of relative motion . can be secured for a body moving around the Sun , together with the necessary number of apparent positions , it is ...
Pagina 15
... motion . Theorem I. The motion of the comet is in a plane passing through the center of the Sun. Theorem II . The areas swept over by the radius vector from the Sun are proportional to the intervals of time in which they are described ...
... motion . Theorem I. The motion of the comet is in a plane passing through the center of the Sun. Theorem II . The areas swept over by the radius vector from the Sun are proportional to the intervals of time in which they are described ...
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absorption aperture apparatus appear astronomers ASTROPHYSICAL JOURNAL axis bands blackening Board of Visitors bolometer bright lines brighter camera carbon catalogue cents chromosphere cluster Coin comparison compound spectrum corona corresponding curve density determined diameter disk displacement eclipse electrodes employed equal error exposure faint stars Fe lacking focal length given gives Harvard College Observatory hydrogen lines inches instrument intensity investigation Keeler Lick Observatory light line of sight luminosity magnitude maximum mean measured mercury vapor Messier 13 metallic meteors micrometer mirror Morris Travers Naval Observatory objective observations obtained orbit oxygen photographs photometric Pickering plate position Potsdam pressure prism Professor radiation rays refractor region ring nebula Scheiner screw slit spark spectra spectrograph spectroheliograph spectroscope stellar telescope temperature tenth-meters tion trum tube University of Chicago Ursae vanadium Variable Stars Variable Velocity visual W. W. Campbell wave-lengths wedge Widely separated Yerkes Observatory
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Pagina 49 - EMGs were sampled with surface electrodes for ten revolutions at the beginning, in the middle and at the end of each work...
Pagina 272 - When an appointment or detail is to be made to the office of astronomical director, director of the Nautical Almanac, astronomer, or assistant astronomer, the board of visitors may recommend to the Secretary of the Navy a suitable person to fill such office, but such recommendation shall be determined only by a majority vote of the members present at a regularly called meeting of the board held in the city of Washington.
Pagina 197 - The officers of the Society shall consist of a President, two Vice Presidents, a Secretary...
Pagina 197 - Society to serve for a period of one year, and two members shall be chosen annually to serve for a period of two years or until their successors are duly elected and qualified.
Pagina 272 - The board of visitors shall prepare and submit to the Secretary of the Navy regulations prescribing the scope of the astronomical and other researches of the Observatory and the duties of its staff with reference...
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