Popular Astronomy, Volume 53Goodsell Observatory of Carleton College, 1945 |
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Page 193
... appear to be decidedly broad and flat . The same seems to follow for the minima . And there appears to be no regularity to such changes in form of light curve . Although the mean light curves derived from all observations made over the ...
... appear to be decidedly broad and flat . The same seems to follow for the minima . And there appears to be no regularity to such changes in form of light curve . Although the mean light curves derived from all observations made over the ...
Page 333
... appear excessive . Scott has pioneered in spectro- photometry of Mira . He finds that the light variation is completely accounted for by variation of temperature and by line and band absorp- tion . There is no room left for " veiling ...
... appear excessive . Scott has pioneered in spectro- photometry of Mira . He finds that the light variation is completely accounted for by variation of temperature and by line and band absorp- tion . There is no room left for " veiling ...
Page 439
... appear in the panorama of naked - eye objects ; and of the whole , only 20 , or 8 per cent , are brighter than the sun . Yet , due to the in- fluences of the few relatively bright stars , the average absolute bright- ness of all is ...
... appear in the panorama of naked - eye objects ; and of the whole , only 20 , or 8 per cent , are brighter than the sun . Yet , due to the in- fluences of the few relatively bright stars , the average absolute bright- ness of all is ...
Contents
THE VARIATION IN THE CALENDAR TIME OF THE EQUINOX | 103 |
PERSONAL EQUATION IN ASTRONOMY RAYNOR L DUNCOMBE | 110 |
THE AMPLEMENT AND THE COAMPLEMENT OF AN ANGLE | 121 |
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absorption aerolite angle angular appear April Astronomical Society B.Taur bisection error bright calendar century Cepheids clock clouds color comet computed constellation coördinate corona craters cycle Cygni dark nebulae diameter distance earth Easter intervals eclipse emission epact Ephemeris equinox Figure fireball full moon galactic given golden number Greenwich Jupiter km/sec latitude light curves lines lunar magnitude March Mars maximum mean Mercury meridian meteor meteorite method micrometer miles minimum motion nebulae noted nova object observations Observatory OCCULTATIONS VISIBLE orbit parsecs path perihelion period personal equation personal error photographic planets position precessional action region reports right ascension rotation satellite Saturn solar spectra spectral type spectrum SS Cygni stellar sun-spot surface Table Tauri stars telescope temperature tion transit circle U.S. Naval Observatory University Uranus Variable Star variation velocity Venus VISIBLE IN LONGITUDE zenith