Astronomy:HIP 41378 f

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Short description: Extrasolar planet in the constellation Cancer
HIP 41378 f
Discovery
Discovery dateJune 2016
Transit
Orbital characteristics
1.37±0.02 au
Orbital period542.07975±0.00014
StarHIP 41378[1]
Physical characteristics
Mean radius9.2 ± 0.1 R⊕
Mass12 ± 3 M⊕
Mean density0.09 ± 0.02 g cm−3
PhysicsTeq: 294 K (21 °C; 70 °F)


HIP 41378 f (also known as EPIC 211311380 f) is an exoplanet orbiting around the F-type star HIP 41378. It is the outermost planet of its system. It has an anomalously large radius (9.2 R⊕) for a planet of its size and temperature, therefore the radius may actually be that of an optically thick ring system.[2] It is located within the optimistic habitable zone of its parent star.[3] No atmospheric signatures were found as in 2022, further reinforcing the hypothesis of opaque circumplanetary rings.[4]

See also

References

  1. ↑ "HIP 41378 f CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=HIP+41378+f&type=CONFIRMED_PLANET. 
  2. ↑ Akinsanmi, B.; Santos, N. C.; Faria, J. P.; Oshagh, M.; Barros, S. C. C.; Santerne, A.; Charnoz, S. (2020-03-01). "Can planetary rings explain the extremely low density of HIP 41378 𝑓?" (in en). Astronomy & Astrophysics 635: L8. doi:10.1051/0004-6361/202037618. ISSN 0004-6361. https://www.aanda.org/articles/aa/abs/2020/03/aa37618-20/aa37618-20.html. 
  3. ↑ Santerne, A.; Malavolta, L.; Kosiarek, M. R.; Dai, F.; Dressing, C. D.; Dumusque, X.; Hara, N. C.; Lopez, T. A.; Mortier, A.; Vanderburg, A.; Adibekyan, V.; Armstrong, D. J.; Barrado, D.; Barros, S. C. C.; Bayliss, D.; Berardo, D.; Boisse, I.; Bonomo, A. S.; Bouchy, F.; Brown, D. J. A.; Buchhave, L. A.; Butler, R. P.; Collier Cameron, A.; Cosentino, R.; Crane, J. D.; Crossfield, I. J. M.; Damasso, M.; Deleuil, M. R.; Delgado Mena, E.; et al. (2019). "An extremely low-density and temperate giant exoplanet". arXiv:1911.07355 [astro-ph.EP].
  4. ↑ Alam, Munazza K.; Kirk, James; Dressing, Courtney D.; López-Morales, Mercedes; Ohno, Kazumasa; Gao, Peter; Akinsanmi, Babatunde; Santerne, Alexandre et al. (2022), "The First Near-infrared Transmission Spectrum of HIP 41378 f, A Low-mass Temperate Jovian World in a Multiplanet System", The Astrophysical Journal Letters 927 (1): L5, doi:10.3847/2041-8213/ac559d, Bibcode: 2022ApJ...927L...5A 




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