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Experiment Eclipsing Binaries Preliminary Light Curve Analysis Form
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People also ask
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What is the eclipsing binary light curve analysis?
The light curve of an eclipsing binary—i.e., a plot of its changes in brightness over time—has a deep minimum when the brighter star is eclipsed and a shallower minimum when the dimmer star is eclipsed. The variable star Algol, or Beta Persei, was the first eclipsing binary to be recognized as such. -
How is a eclipsing binary star detected?
Astrometric binaries generally have long periods (months to years or decades) as the motion on the sky is too small to detect short-period binaries. Photometry: eclipsing binaries are detected thanks to the periodic dimming of a star due to a (partial) eclipse by a companion. -
Why are eclipsing binaries so important for measuring masses of stars?
So the key advantage of the eclipsing-binary method is that you can work out the geometry and timing of the system, so that you can determine the radii of the two stars, and then combine that with their surface fluxes to get their luminosities -- and then their distance. The key here is mass. -
What information can we determine about the stars in an eclipsing binary system based on the light curve?
The shape of the light curve during an eclipse gives the ratio of the radii of the two stars and also one radius in terms of the size of the orbit, the ratio of luminosities, and the inclination of the orbital plane to the plane of the sky. -
What can we determine by studying eclipsing binaries?
Eclipsing binaries (EBs) are one of the most populated types of variable stars to be identified through photometry observations. Under certain conditions, we can accurately determine the fundamental properties of stars (e.g. mass and radius) through EBs, and obtain the orbit parameters of EBs as well. -
What can binary stars be used to determine?
Binaries provide the best method for astronomers to determine the mass of a distant star. The gravitational pull between them causes them to orbit around their common center of mass. -
Why is it important to study binary stars?
Binary stars are of immense importance to astronomers as they allow the masses of stars to be determined. A binary system is simply one in which two stars orbit around a common centre of mass, that is they are gravitationally bound to each other. Actually most stars are in binary systems. -
What is the eclipsing binary measure?
The eclipsing-binary method uses the idea that a star's luminosity can be defined as L=4πfsR2, where fs is the flux per unit area from the star's surface and R is the radius of the star. -
What is a light curve of an eclipsing binary?
The light curve of an eclipsing binary—i.e., a plot of its changes in brightness over time—has a deep minimum when the brighter star is eclipsed and a shallower minimum when the dimmer star is eclipsed. The variable star Algol, or Beta Persei, was the first eclipsing binary to be recognized as such. -
What can we determine by studying eclipsing binaries?
Eclipsing binaries (EBs) are one of the most populated types of variable stars to be identified through photometry observations. Under certain conditions, we can accurately determine the fundamental properties of stars (e.g. mass and radius) through EBs, and obtain the orbit parameters of EBs as well. -
What can be learned from eclipsing binaries?
Stellar radii Eclipsing binaries also provide extensive data on stellar dimensions. The timing of eclipses provides the angular size of any occulting object, and so analyzing the light curves of eclipsing binaries can be a useful means of determining the dimensions of either dwarf or giant stars.
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