KELT-20b

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KELT-20b
Ultra-Hot Jupiter-Sized Exoplanet Illustration (2022-014).png
An artist's impression of ultra-hot Jupiter planet KELT-20b orbiting its host star.
Discovery
Discovery site KELT
Discovery date2017
Transit method
Orbital characteristics
0.0542 AU
3.6127647 d = 3.474
Inclination 86.12
Star KELT-20
Physical characteristics
1.741 RJ
Mass <3.382 MJ
Mean density
<0.806 g cm−3

    KELT-20b, also known as MASCARA-2b, is an exoplanet announced in 2017. It is an Ultra-hot Jupiter orbiting an A-type star. The carbon monoxide, steam [1] [2] and neutral iron [3] detection in the atmosphere of KELT-20b was announced in 2022.

    Contents

    Host star

    The host star is an A-type main-sequence star in the constellation of Cygnus having 2.282 solar masses, 1.617 solar radius and an apparent magnitude of 7.58.

    See also

    References

    1. ↑ Fu, Guangwei; Sing, David K.; Lothringer, Joshua D.; Deming, Drake; Ih, Jegug; Kempton, Eliza M. -R.; Malik, Matej; Komacek, Thaddeus D.; Mansfield, Megan; Bean, Jacob L. (2022), "Strong H2O and CO Emission Features in the Spectrum of KELT-20b Driven by Stellar UV Irradiation", The Astrophysical Journal Letters, 925 (1): L3, arXiv: 2201.02261 , Bibcode:2022ApJ...925L...3F, doi: 10.3847/2041-8213/ac4968
    2. ↑ Kasper, David; Bean, Jacob L.; Line, Michael R.; Seifahrt, Andreas; Brady, Madison T.; Lothringer, Joshua; Pino, Lorenzo; Fu, Guangwei; Pelletier, Stefan; Stürmer, Julian; Benneke, Björn; Brogi, Matteo; Désert, Jean-Michel (2023), "Unifying High- and Low-resolution Observations to Constrain the Dayside Atmosphere of KELT-20b/MASCARA-2b", The Astronomical Journal, 165 (1): 7, arXiv: 2208.04759 , Bibcode:2023AJ....165....7K, doi: 10.3847/1538-3881/ac9f40
    3. ↑ Yan, F.; Reiners, A.; Pallé, E.; Shulyak, D.; Stangret, M.; Molaverdikhani, K.; Nortmann, L.; Mollière, P.; Henning, Th.; Casasayas-Barris, N.; Cont, D.; Chen, G.; Czesla, S.; Sánchez-López, A.; López-Puertas, M.; Ribas, I.; Quirrenbach, A.; Caballero, J. A.; Amado, P. J.; Galadí-Enríquez, D.; Khalafinejad, S.; Lara, L. M.; Montes, D.; Morello, G.; Nagel, E.; Sedaghati, E.; Zapatero Osorio, M. R.; Zechmeister, M. (2022), "Detection of iron emission lines and a temperature inversion on the dayside of the ultra-hot Jupiter KELT-20b", Astronomy & Astrophysics, 659: A7, arXiv: 2201.08759 , Bibcode:2022A&A...659A...7Y, doi:10.1051/0004-6361/202142395, S2CID   246210387
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