WASP-7b

WASP-7b

WASP-7b

Extrasolar planet in the constellation Microscopium

WASP-7b is an extrasolar planet discovered in 2008. This 5-day period planet is slightly smaller than Jupiter, roughly the same mass and more dense.[2]

Quick Facts Discovery, Discovered by ...

A study in 2012, utilizing the Rossiter–McLaughlin effect, determined the planetary orbit is strongly misaligned with the equatorial plane of the star, with misalignment equal to 86±8°, making the planetary orbit nearly polar.[3] The orbit is also slightly eccentric, which is surprising given the tidal circularization timescale of below 650 million years.[1]

Physical properties

The measured temperature on the planetary dayside is 1393+80
−82 K.[1] Sodium was detected in the planetary atmosphere in 2022.[4]

See also

References

  1. [1]
    Wallack, Nicole L.; Knutson, Heather A.; Deming, Drake (2021), "Trends in Spitzer Secondary Eclipses", The Astronomical Journal, 162 (1): 36, arXiv:2103.15833, Bibcode:2021AJ....162...36W, doi:10.3847/1538-3881/abdbb2, S2CID 232417602
  2. [2]
    Hellier; et al. (December 11, 2008). "WASP-7: The brightest transiting-exoplanet system in the Southern hemisphere". The Astrophysical Journal Letters. 690 (1): L89–L91. arXiv:0805.2600. Bibcode:2009ApJ...690L..89H. doi:10.1088/0004-637X/690/1/L89. S2CID 15962609.
  3. [3]
    Albrecht, Simon; Winn, Joshua N.; Johnson, John A.; Howard, Andrew W.; Marcy, Geoffrey W.; Butler, R. Paul; Arriagada, Pamela; Crane, Jeffrey D.; Shectman, Stephen A.; Thompson, Ian B.; Hirano, Teruyuki; Bakos, Gaspar; Hartman, Joel D. (2012), "Obliquities of Hot Jupiter Host Stars: Evidence for Tidal Interactions and Primordial Misalignments", The Astrophysical Journal, 757 (1): 18, arXiv:1206.6105, Bibcode:2012ApJ...757...18A, doi:10.1088/0004-637X/757/1/18, S2CID 17174530
  4. [4]
    Rahmati, Hossein; Czesla, Stefan; Khalafinejad, Sara; Mollière, Paul (2022), "Transmission spectroscopy of WASP-7 b with UVES", Astronomy & Astrophysics, 668: A24, arXiv:2210.08517, doi:10.1051/0004-6361/202243955, S2CID 252917734

Media related to WASP-7b at Wikimedia Commons


Stub icon

This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it.
Share this article:

This article uses material from the Wikipedia article WASP-7b, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.