Popular Astronomy, Volume 51Goodsell Observatory of Carleton College, 1943 |
From inside the book
Results 1-3 of 15
Page 235
... Pleione is at present the most interesting member of the cluster . 3. At first sight we detect nothing very unusual about Pleione . It is a blue star , with a temperature of 15,000 ° , an apparent magnitude of 5.2 and an absolute ...
... Pleione is at present the most interesting member of the cluster . 3. At first sight we detect nothing very unusual about Pleione . It is a blue star , with a temperature of 15,000 ° , an apparent magnitude of 5.2 and an absolute ...
Page 236
... Pleione has , during the past 41⁄2 years , reverted to its original character of a bright - line object . We are thus concerned with three stages of the star : ( 1 ) the bright- line stage prior to 1903 , ( 2 ) the absorption - line ...
... Pleione has , during the past 41⁄2 years , reverted to its original character of a bright - line object . We are thus concerned with three stages of the star : ( 1 ) the bright- line stage prior to 1903 , ( 2 ) the absorption - line ...
Page 238
... Pleione , which appear symmetrically broadened on both sides of the zero posi- tion , with the deepest absorption in the middle . Such lines are best described by the word " dish - shaped , " which was coined by C. T. Elvey many years ...
... Pleione , which appear symmetrically broadened on both sides of the zero posi- tion , with the deepest absorption in the middle . Such lines are best described by the word " dish - shaped , " which was coined by C. T. Elvey many years ...
Contents
Frontispiece Plate 1 The Moon | 9 |
The Moon Wm W Payne | 16 |
Concerted Observation of the Aurora M A Veeder | 22 |
4 other sections not shown
Other editions - View all
Common terms and phrases
altitude American angle appears asteroids Astronomical Society ataxite atmosphere August brighter brightness catalogs celestial colour comet Copernican Copernicus Cygni December determined diameter distance Earth eclipse Ephemeris equinox error estimates explosion eyepiece fall February feet fireball given Goodsell Observatory Greenwich Harlow Shapley Harvard Harvard College Observatory January Jupiter latitude light curve longitude lunar magnitude March Mare Imbrium Mars mass mathematics maximum meteorite method miles Moon Moon's motion navigation nebulae Notes Nova object observations obtained occultation orbit OTERMA parallax path period photographic planet plates Pleione POPULAR ASTRONOMY position present probably Professor proper motions reports rotation Saturn SCRIPTA MATHEMATICA seen siderites solar spectral spectral type spectroscopic sphere SS Cygni stellar surface telescope theory tion Tucson University Variable Star velocity Venus visible visual visual magnitude volume