Introductory Astronomy |
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Page 235
... GLOBULAR CLUSTERS Globular clusters get their name from their round , compact appear- ance . More than 100 are found all over the sky ; they do not favor the Milky Way region as do the galactic clusters . The great majority of globular ...
... GLOBULAR CLUSTERS Globular clusters get their name from their round , compact appear- ance . More than 100 are found all over the sky ; they do not favor the Milky Way region as do the galactic clusters . The great majority of globular ...
Page 243
... globular clusters was discussed in that section and also in Section 11.6 of the next chapter . It was stated that the globular clusters form a spherically symmetrical group , and it is assumed that the center of the globular cluster ...
... globular clusters was discussed in that section and also in Section 11.6 of the next chapter . It was stated that the globular clusters form a spherically symmetrical group , and it is assumed that the center of the globular cluster ...
Page 290
... Globular Clusters Like our own galaxy , some of the other larger galaxies exhibit a halo of globular clusters . In our galaxy the brightest globular clusters have absolute magnitudes of between -8 and -9 . Therefore , if one can assume ...
... Globular Clusters Like our own galaxy , some of the other larger galaxies exhibit a halo of globular clusters . In our galaxy the brightest globular clusters have absolute magnitudes of between -8 and -9 . Therefore , if one can assume ...
Contents
The Beginnings of AstronomyPtolemy | 1 |
The Earth and Its Motions | 25 |
The Earths Interior | 43 |
Copyright | |
18 other sections not shown
Common terms and phrases
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