Popular Astronomy, Volume 50Goodsell Observatory of Carleton College, 1942 |
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Page 123
... luminosity relation , trigonometric parallaxes of relatively near Cepheids must be used . So called “ dynamical parallaxes " may be derived from visual binaries . Kepler's third law , as corrected by Newton , gives a relation between ...
... luminosity relation , trigonometric parallaxes of relatively near Cepheids must be used . So called “ dynamical parallaxes " may be derived from visual binaries . Kepler's third law , as corrected by Newton , gives a relation between ...
Page 125
... luminosity , mass- luminosity , interstellar lines , etc. , and through the use of some of these , for finding the distances of clusters , nebulae , and galaxies . Finally , and all inclusive , a knowledge of the size , shape , motion ...
... luminosity , mass- luminosity , interstellar lines , etc. , and through the use of some of these , for finding the distances of clusters , nebulae , and galaxies . Finally , and all inclusive , a knowledge of the size , shape , motion ...
Page 244
... luminosity of slow and fast novae , about 2.4 magnitudes . The agreement may be fortuitous , but it is close enough to the differ- ence determined by other methods to look as if there is some validity in the assumption of a constant ...
... luminosity of slow and fast novae , about 2.4 magnitudes . The agreement may be fortuitous , but it is close enough to the differ- ence determined by other methods to look as if there is some validity in the assumption of a constant ...
Contents
Bolide observed A bright 451 | 114 |
STELLAR DISTANCES FREDERICK SLOCUM | 117 |
METEORITIC FOSSILS BEN HUR WILSON | 125 |
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absolute magnitude American American Astronomical Society American Meteor Society angle appeared Astronomical Society atmosphere average azimuth changes College comets constellation craters Cygni diameter direction distance earth eclipse end point ephemeris errors fireball galactic galaxies given height horizon indicated instruments July June Jupiter latitude Lick Observatory light curve longitude luminosity lunar Mare Imbrium Mars maxima maximum mean measured meridian meteor meteorite method miles minimum moon motion nebulae Notes novae object observations Observatory obtained OCCULTATIONS Ohio orbit paper parallax path perihelion phenomena photographs planet POPULAR ASTRONOMY position predicted present probably problem projectile radiation region reports rotation seen solar spectra spectral type spectrum SS Cygni stellar sunspot surface Table telescope tion train University Variable Star variation velocity Venus visible Yerkes Observatory zenith Zodiacal Light