In astronomy, an intermediate polar (also called a DQ Herculis Star) is a type of cataclysmic variable, binary star system with a white dwarf and a cool...
8 KB (997 words) - 11:24, 26 February 2023
been proposed that intermediate polars may evolve into polars as the donor is depleted and the orbit shrinks. Also called pre-polars, this class of pre-cataclysmic...
10 KB (1,307 words) - 08:06, 19 April 2025
The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can...
98 KB (12,689 words) - 07:00, 2 June 2025
grizzly bear. The bear possesses physical characteristics intermediate between grizzlies and polar bears, such as brown fur on its paws, long claws, and a...
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developed at Cornell University. According to this model, AE Aqr is an intermediate polar-type star, where the magnetic field is relatively weak and an accretion...
64 KB (7,100 words) - 05:55, 18 June 2025
DO Draconis/YY Draconis (category Intermediate polars)
variable by J. Patterson and associates in 1994 – also known as an intermediate polar. This indicates the white dwarf has a sufficiently strong magnetic...
21 KB (1,829 words) - 18:04, 18 January 2025
AE Aquarii (category Intermediate polars)
AE Aquarii is a cataclysmic variable binary star of the DQ Herculis type. Based upon parallax measurements, the system is located at a distance of about...
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GK Persei (category Intermediate polars)
Pastor-Marazuela, I.; Goff, W.; Corral-Santana, J. M.; Sabo, R. (2021). "The intermediate polar cataclysmic variable GK Persei 120 years after the nova explosion:...
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WX Pyxidis (category Intermediate polars)
after which a visual correlate was searched for. It is classed as an intermediate polar system, composed of a white dwarf and red dwarf with a calculated...
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DQ Herculis (category Intermediate polars)
the prototype for a category of cataclysmic variable stars called intermediate polars. The red dwarf has filled its Roche lobe and matter is being drawn...
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several other classes of these variables are known, including polars and intermediate polars, both of which feature highly magnetic white dwarfs. Both fusion-...
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EX Hydrae (category Intermediate polars)
EX Hydrae is an eclipsing intermediate polar (DQ Herculis) -type cataclysmic variable star that also undergoes eclipses. The system varies in apparent...
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2019 a unique variable star – the first known eclipsing stream-fed intermediate polar, cataloged as J1832.4-1627 (VSX-Id of AAVSO: 000-BNG-512) Schwab was...
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BG Canis Minoris (category Intermediate polars)
14.5. The light curve for this star proved quite similar to other intermediate polars that had been identified as X-ray sources. The overall brightness...
17 KB (1,347 words) - 20:24, 2 May 2025
expected to have huge densities, exceeding 1023 kilogram per cubic meter – intermediate between quark stars and black holes. Preon stars could originate from...
20 KB (2,589 words) - 22:40, 1 March 2025
V373 Scuti (category Intermediate polars)
indicators suggest a magnetic influence, making this a candidate intermediate polar system. A luminosity modulation of 258.3 seconds is most likely due...
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Aurora (redirect from Polar Aurora)
complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the...
116 KB (12,896 words) - 19:52, 9 June 2025
magnetic field Fossil stellar magnetic field Intermediate polar Magnetic field Chemically peculiar star Polar (star) SX Arietis variable Vaughan–Preston...
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Cylindrical coordinate system (redirect from Cylindrical polar coordinates)
radius and the azimuth are together called the polar coordinates, as they correspond to a two-dimensional polar coordinate system in the plane through the...
18 KB (2,117 words) - 18:59, 17 April 2025
V4743 Sagittarii (category Intermediate polars)
75 MHz that suggests a rapidly rotating magnetic white dwarf in an intermediate polar system. In 2003, an optical variation of 6.74 ± 0.07 hours was observed...
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polarization in their optical light, and are therefore sometimes called polars; these often exhibit small-amplitude brightness fluctuations at what is...
12 KB (1,009 words) - 23:13, 4 March 2025
was also used to perform a photometric study of V1033 Cas, a rare intermediate polar star system. According to the observatory's website, the site is the...
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V5668 Sagittarii (category Intermediate polars)
The light curve for this event is very similar to the DQ Herculis intermediate polar, and it shows a coincident oscillation in X-ray flux with a period...
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Suggested classical nova counterparts for 393 V643 Sco a Z Cam-type dwarf nova IGR J17195–4100 intermediate polar...
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Suggested classical nova counterparts for 386 Designation Comments V1223 Sgr Intermediate polar V3890 Sgr Known recurrent nova Four further symbiotic binaries...
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FO Aquarii (category Intermediate polars)
FO Aquarii is an intermediate polar star system in the constellation Aquarius. The white dwarf and companion star orbit each other with a period of approximately...
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The south polar skua (Stercorarius maccormicki) is a large seabird in the skua family, Stercorariidae. An older name for the bird is MacCormick's skua...
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result of the polar solvent's solvating the reactant intermediate species, i.e., the carbocation, thereby decreasing the intermediate energy relative...
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Cataclysmic pole shift hypothesis (redirect from Polar shift)
true polar wander, the Earth rotates with respect to a fixed spin axis. Research shows that during the last 200 million years a total true polar wander...
17 KB (1,843 words) - 05:59, 19 February 2025
Polar Class (PC) refers to the ice class assigned to a ship by a classification society based on the Unified Requirements for Polar Class Ships developed...
33 KB (3,330 words) - 07:15, 20 June 2025