Eclipsing Binary Star
Related Category: Astronomy: General
see binary star; variable star.
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Eclipsing Binary
Eclipsing binaries are whose orbital plane is along the line of sight. Eclipsing binaries may therefore be detected by brightness variations of the binary system. The most famous are beta Persei (Algol), which varies from 3.4 to 2.
A pair of white dwarf stars have been discovered in an eclipsing binary system, offering astronomers the first chance to directly measure the radius of a rare white dwarf composed of pure helium.
ECLIPSING BINARY - Binary star system where one of the two stars passes between its companion and Earth, yielding systematic changes in its brightness.
eclipsing binary Rare binary-star system that is aligned in such a way that from Earth we periodically observe one star pass in front of the other, eclipsing the other star.
eclipsing binary
a binary star with an orbital plane oriented so that one star passes in front of the other, thus completely or partially blocking the light from the other star during each orbital period
ecliptic ...
Eclipsing binary: diameter = speed × time of eclipse.
Size from luminosity: star's radius/Sun's radius = (Sun's temperature/star's temperature)2 Sqrt[star's luminosity/Sun's luminosity].
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Eclipsing Binary
(a) A binary star of which, from the viewpoint of Earth, one of the two bodies regularly passes in front of the other.
eclipsing binary system: A binary star system in which the stars eclipse each other.
ecliptic: The apparent path of the sun around the sky.
ejecta: Pulverized rock scattered by meteorite impacts on a planetary surface.
Eclipsing Binary - Binary star systems for which the orbital plane of the stars lies so nearly in the line of sight that two stars alternately pass in front of one another, causing eclipses ...
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ECLIPSING BINARY
An eclipsing binary is two close stars that appear to be a single star varying in brightness. The variation in brightness is due to the stars periodically obscuring or enhancing one another.
Eclipsing binary stars are variable because one star may obscure the surface of another star during their orbit, if the plane of their orbit lies on or near our line of sight. Algol is a common example of this kind of binary star.
Eclipsing binary lambda Tau (period: 4 days)
Double stars theta Tau, kappa Tau, sigma Tau, phi Tau, chi Tau
Diffuse Nebula M 1
Open star cluster Hyades, M 45 (Pleiades)
Meteor Showers: Taurids, Beta Taurids ...
eclipsing binary Rare binary-star system that is aligned in such a way from Earth we observe one star pass in front of the other, eclipsing the other star.
eclipsing binary star - A binary star in which the plane of revolution of the two stars is nearly edge on to our line of sight, so that the light of one star is periodically diminished by the other passing in front of it.
Eclipsing binary light curves are characterised by periodic dips in brightness that occur whenever one of the components is eclipsed.
eclipsing binary
mass transfer
28 - Multiple Star Systems, Novas and Supernova Type I ...
Eclipsing binary: In an eclipsing double star system, the planet can be detected by finding variability in minima as it goes back and forth. It is the most reliable method for detecting planets in binary star systems.
Eclipsing binary stars, in which two stars are in orbit about each other and each passes in front of the other as seen from the Earth, have given us most of our knowledge of the masses of different kinds of stars.
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Eclipsing Binary
A binary system where one object passes in front of the other, cutting off some or all of its light.
Ecliptic
An imaginary line in the sky traced by the Sun as it moves in its yearly path through the sky.
An eclipsing binary, with an indication of the variation in intensity.D. Gossman, Light Curves and Their Secrets, Sky & Telescope (October 1989, p.410)Eclipsing Binary Simulation, Cornell Astronomy ...
An eclipsing binary whose secondary is close to its Roche limit. [H76]
Eri ...
In an eclipsing binary, the brightness of the smaller, brighter star is greatest when its companion star, in this case the dark colored ball, is behind it.
Unlike the eclipsing binary Algol, Delta Cephei's variability is due to pulsation of the star. It varies from magnitude 3.6 to 4.3, and its spectral type also varies, from about F5 to G3. The period is 5.
For low-mass eclipsing binary stars, the method of eclipse minimum timing allows astronomers to search for smaller masses than those feasible with radial velocity measurements.
An eclipsing binary system. The variation of the brightness (the graph at the bottom) due to eclipsing stars depends upon the brightness of the individual stars. When the stars are both visible, the brightness is at a maximum value.
Alphecca is an eclipsing binary. The brighter star of the pair is a white A0V main sequence star. This spectral type corresponds to an effective temperature of 9900 K. The star diameter must be about 2.5 times the sun's diameter.
Upsilon Sgr is an eclipsing binary (beta Lyrae type: EB) with an unusually long period of 137.9 days. Its range will be undetectable to most observers, from 4.53 to 4.
Light curve of an eclipsing binary system
Credit: Swinburne
Light curves of Supernovae
Credit: NASA/CXC/UC Berkeley/N.Smith et al.
Beta Aurigae is an eclipsing binary star, and its apparent magnitude varies over a period of 3.96004 days between +1.85 and +1.93, as every 47.5 hours one of the stars partially eclipses the other from Earth's perspective.
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Alhena ...
In an eclipsing binary, the orbital plane of the two stars is nearly in the line of sight, so that one star first blocks the light from the second, and then the second blocks the light from the first. Every 3.
Algol is now known to be an eclipsing binary, consisting of a larger (3.5-solar-radius) but fainter subgiant K star and a slightly smaller (3-solar-radius) but brighter B star in orbit around each other.
The researchers made the discovery after 15 years of collecting data on stars in Orion, during which time they found three eclipsing binary pairs.
Other notable stars in Ara are R Arae, an Algol-type eclipsing binary, [568] zeta Arae, an orange K-type giant, [570] delta Arae or Tseen Yin ("the Dark Sky"), a B-type main sequence dwarf with a 12-magnitude optical companion, [571] theta Arae, ...
Eclipsing Binary: Sometimes, in a binary star system, one star will pass in front of the other producing what we call eclipsing binary. It can be treated as a special kind of visual binary. Eclipsing binary systems are variable stars (see below).
This is called an eclipsing binary system. In the case of an eclipsing binary, we see each star pass directly in front of the other one. In these cases, the masses can be directly determined for the stars.
In addition to taking pretty pictures of celestial and local objects, you can search for trails from moving objects (meteors, satellites, airplanes), and look for variable stars, such as the eclipsing binary Algol in Perseus.
Figure: See Figure 9-19. In an eclipsing binary system changes in the light curve correspond to various points in the binary orbit. The light drops when one or the other of the stars is eclipsed.
Richardson, an African-American sophomore at Fisk, also majoring in physics as part of the FASST program, has likewise dived head first into astronomy research. His main task has been to process measurements from an eclipsing binary system -- a ...
The Oxford Pocket Dictionary of Current English entry for binary star
A Dictionary of Astronomy entry for binary star
The Columbia Encyclopedia, Sixth Edition entry for eclipsing binary star
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Eclipse An alignment of two bodies with the observer such that either the nearer body prevents the light from the further body from reaching the observer (strictly speaking, these are occultations), e.g. solar eclipse or eclipsing binary stars, ...
Known also as Praesepe (Latin for manger), it's Messier No. is M44. When observing it, look for the eclipsing binary star TX Cancri. Epsilon Cancri is also an eye catcher and worth spending some time to find.
Algol is the type of star known as an eclipsing binary, consisting of two close stars that orbit each other, in this case every 2.9 days. Algol varies in brightness as the two stars eclipse each other.
 See also: Star, Period, Orbit, Light, Magnitude
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