Popular Astronomy, Volume 52Goodsell Observatory of Carleton College, 1944 |
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Page 113
... spectrum last for some time after most of its metallic lines , but H and K of Cair endure longest of all , and the D lines of Nar ac- company them . The new absorption spectrum that emerges just after maximum is called the " principal ...
... spectrum last for some time after most of its metallic lines , but H and K of Cair endure longest of all , and the D lines of Nar ac- company them . The new absorption spectrum that emerges just after maximum is called the " principal ...
Page 114
... spectrum is much more diffuse than the principal spectrum , and because lines of ionized atoms ( the " enhanced " lines of old - time spectroscopy ) show conspicuously in this system , the name " diffuse enhanced spectrum " was coined ...
... spectrum is much more diffuse than the principal spectrum , and because lines of ionized atoms ( the " enhanced " lines of old - time spectroscopy ) show conspicuously in this system , the name " diffuse enhanced spectrum " was coined ...
Page 115
fuseness of the spectrum , the line intensities are proportional to the number of atoms , even for the strongest lines . In the principal spectrum , on the other hand , turbulence is lower , and the strongest lines lie on the horizontal ...
fuseness of the spectrum , the line intensities are proportional to the number of atoms , even for the strongest lines . In the principal spectrum , on the other hand , turbulence is lower , and the strongest lines lie on the horizontal ...
Contents
THE MILKY WAY BART J BOK | 261 |
EXPERIMENTAL MOON CRATERS WILly Ley | 278 |
RECURRENCE OF FLOODS AND DROUTHS AFTER INTERVALS | 284 |
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absorption appear April Arabic Astr Astronomical Society August average B.Taur binary bright Catalogue Cepheids clusters color computed coördinate number crater cycle Cygni derived diameter distance distribution double stars earth eclipse emission Ephemeris fall field fireball galactic center galaxy given Greenwich Harvard indicated interstellar investigation July Jupiter km/sec latitude Lick Observatory light curve lines magnitude Mars mass maximum measured meteor meteorite method miles Milky months Moon nebulae Notes Nova object Observatory obtained OCCULTATIONS VISIBLE October orbit Otto Struve oxide parallaxes perihelion photographic planet plates position present probably proper motions Pulkovo radial velocities record region relative right ascension rotation Saturn Shapley siderite solar spectral class spectral types spectroscopic spectrum spots SS Cygni star density stellar Struve sunspots Table telescope temperature tion University Variable Star VISIBLE IN LONGITUDE visual Wilson