Introductory Astronomy |
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Page 224
... BINARY STARS For a given visual binary Kepler's third law shows that if the mass sum is kept constant and the semimajor axis is decreased , then the period would also decrease in order to keep a3 / P2 constant . But as a decreases , so ...
... BINARY STARS For a given visual binary Kepler's third law shows that if the mass sum is kept constant and the semimajor axis is decreased , then the period would also decrease in order to keep a3 / P2 constant . But as a decreases , so ...
Page 227
... binary because neither the mass ratio nor the sum can be deter- mined . 11.3 ECLIPSING BINARY STARS From what has been said in the last section it will be apparent that when the inclination is 90 ° , or close to it , the system will ...
... binary because neither the mass ratio nor the sum can be deter- mined . 11.3 ECLIPSING BINARY STARS From what has been said in the last section it will be apparent that when the inclination is 90 ° , or close to it , the system will ...
Page 228
... binary is also a double - lined spectroscopic binary so that the relative orbital velocity V can be obtained . However , if there is no spectroscopic data , one can still calculate the relative sizes of each star with respect to their ...
... binary is also a double - lined spectroscopic binary so that the relative orbital velocity V can be obtained . However , if there is no spectroscopic data , one can still calculate the relative sizes of each star with respect to their ...
Contents
The Beginnings of AstronomyPtolemy | 1 |
The Earth and Its Motions | 25 |
The Earths Interior | 43 |
Copyright | |
18 other sections not shown
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absolute magnitude absorption lines apparent magnitude appear asteroids astronomers atoms average axis binary bright line brighter celestial cepheids clouds color comet craters curve decreases density diagram diameter disc distance distance modulus dust E₁ earth earth's atmosphere earth's orbit eclipse electron emission emit energy fainter galactic center galactic clusters galactic plane galaxy gases globular clusters gravitational Hale Observatories helium hydrogen increase infrared interstellar ionized Jupiter layer light light-years luminosity lunar main sequence Mars measured meteorite meteoroids meteors miles million molecules moon moon's moving nebula neutron nucleus object observed orbital eccentricity orbital velocity particles period photograph planet protons protoplanets quasars radial velocity radiation radio rays region result rotation satellites Section seen shown in Figure solar masses solar system space spectral spectroscopic spectrum speed spiral star star's stellar sun's sunspot surface temperature telescope theory tion ultraviolet universe Venus wavelength waves white dwarf ZAMS