Absolute magnitude is a measure of the intrinsic luminosity of the star, i.e., its true brightness. Since in modern times magnitudes are measured with photometers and electronic detectors, which may be more sensitive to light at one wavelength than at another wavelength, it is necessary to ...
absolute magnitude(redirected from absolute magnitudes)Also found in: Thesaurus, Encyclopedia. absolute magnitude n. The intrinsic brightness of a celestial body, measured in magnitudes, computed as if viewed from a distance of 10 parsecs, or 32.6 light years. American Heritage® Dictionary of ...
The luminosity of an object expressed in units of fundamental quantities. McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc. Want to thank TFD for its existence?Tell a friend about us, add a link to this page, or visitthe web...
f) Orbital elements and absolute magnitudes (brightness estimates f) 轨道要素和绝对星等(亮度估计值 MultiUn Our own sun is just about as bright as Alpha Centauri, with an absolute magnitude of 4.86. 我们的太阳和半人马座 α星 的亮度差不多,绝对星等为4.86,是一颗普通的中等大小的恒星。 Lit...
The star magnitude system was devised by the ancient Greek astronomer Hipparchus. His original system had star brightness starting from 1(Brightest) to 6 (Dimmest). The scale stayed. Stars and objects brighter than the stars he recorded at the time have negative numbers. The scale has been rev...
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Absolute Magnitude Definition When stargazing, a person may wonder how far astaris away since they can see them clearly on a night with no clouds. The brightness of a star is its luminosity. There are two different magnitudes,absoluteandapparent magnitude.Apparent magnitudeis how bright a star ...
People have always looked up at the night sky and tried to make sense of the stars. One thing that we have wondered about is their brightness. If a...
brightness of a source and its intrinsic brightness, or luminosity. Recall from A1X that astronomers use the magnitude system to express ratios of observed flux to differences in apparent magnitude, via the equation: 2 1 10 2 1 log 5 . 2 ...
Estimating Milky Way Absolute Magnitude Important: All Logs are base 10 and not the natural log. Homework Statement This question is from Foundations of Astrophysics from chapter 19 Suppose the Milky Way consisted of 2.7x10^11 stars, each of solar luminosity MB=4.7. What would be the absolute ...