KELT-20b

Last updated
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]
1.821 RJ
Mass 3.355 MJ
Mean density
0.737 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 [2] [3] and neutral iron [4] 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. Saha, Suman (2023). "Precise Transit Photometry Using TESS: Updated Physical Properties for 28 Exoplanets Around Bright Stars". The Astrophysical Journal Supplement Series. 268 (1): 2. arXiv: 2306.02951 . Bibcode:2023ApJS..268....2S. doi: 10.3847/1538-4365/acdb6b .
    2. 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
    3. 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
    4. 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