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WASP-79b
Exoplanet From Wikipedia, the free encyclopedia
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WASP-79b, also known as Pollera, is an extrasolar planet orbiting the star WASP-79 (Montuno). This planet is in the constellation Eridanus, and is about 810 light-years from Earth.
The name, Pollera, was selected in the NameExoWorlds campaign by Panama, during the 100th anniversary of the IAU. A pollera is the traditional costume the woman wears in the El Punto, a Panamanian dance.[3][4]
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Host star
WASP-79, or CD-30 1812, is a F-type dwarf star located at 240 parsecs (810 light years) away from Earth. With 1.38 M☉ and 1.53 R☉, it is both larger and more massive than the Sun. Its effective temperature is 6,600 K, making it hotter than the Sun.[1]
The star WASP-79 is named Montuno. Montuno is the traditional costume the man wears in the “El Punto”, a Panamanian dance.[3]
Characteristics
WASP-79b is a very large hot jupiter that is among the largest exoplanets discovered although its size is uncertain. The discovery paper estimated it to be 2.09 ± 0.14 RJ (approximately 300,000 kilometers across) with a temperature of 1,900 ± 50 K,[1] but modern studies suggest a lower radius of 1.5795±0.0048 RJ and a temperature of 1747±27 K.[2]
The planet is orbiting the host star at nearly-polar orbit with respect to star's equatorial plane, inclination being equal to −95.2+0.9
−1.0°.[5]
In 2019 and 2020, the transmission spectra of WASP-79b were taken utilizing HST and Spitzer Space Telescope, with best fit being the hazy atmosphere containing about 1% water[6] and traces of Iron(I) hydride.[7][8] The presence of iron hydride was confirmed in 2021, along with tentative detection of vanadium oxide.[9] Also, in 2022 an atmospheric sodium has been detected.[10]
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References
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