WASP-14b

Last updated
WASP-14b
Exoplanet Comparison WASP-14 b.png
Size comparison of WASP-14b with Jupiter.
Discovery
Discovered by Cameron et al. (SuperWASP)
Discovery site SAAO
Discovery dateApril 1, 2008
Transit
Orbital characteristics
0.037+0.001
−0.002 AU
Eccentricity 0.095+0.004
−0.007
2.243756+5E-6
−1E-6 d
Inclination 84.79+0.52
−0.67
254.9+0.92
−1.72
Star WASP-14
Physical characteristics
1.259+0.08
−0.058 RJ
Mass 7.725+0.43
−0.67 MJ
Mean density
5.133  g/cm3 [ citation needed ]
126.2  m/s2 (414  ft/s2)
12.87 g
Temperature 2800

    WASP-14b is an extrasolar planet discovered in 2008 by SuperWASP using the transit method. Follow-up radial velocity measurements showed that the mass of WASP-14b is almost eight times larger than that of Jupiter. The radius found by the transit observations show that it has a radius 25% larger than Jupiter. This makes WASP-14b one of the densest exoplanets known. [1] Its radius best fits the model of Jonathan Fortney. [2]

    Contents

    Orbit

    First calculation of WASP-14b's Rossiter–McLaughlin effect and so spin-orbit angle was −14 ± 17 degrees. [3] It is too eccentric for its age and so is possibly pulled into its orbit by another planet. [1] The study in 2012 has updated spin-orbit angle to 33.1±7.4°. [4]

    References

    1. 1 2 Joshi, Y. C.; et al. (2008). "WASP-14b: A 7.7 Mjup transiting exoplanet in an eccentric orbit". Monthly Notices of the Royal Astronomical Society . 392 (4): 1532–1538. arXiv: 0806.1478 . Bibcode:2009MNRAS.392.1532J. doi: 10.1111/j.1365-2966.2008.14178.x . S2CID   7775011.
    2. ↑ Fortney; Marley, M. S.; Barnes, J. W. (2007). "Planetary Radii across Five Orders of Magnitude in Mass and Stellar Insolation: Application to Transits". The Astrophysical Journal. 659 (2): 1661–1672. arXiv: astro-ph/0612671 . Bibcode:2007ApJ...659.1661F. doi:10.1086/512120. S2CID   3039909.
    3. ↑ Winn, Joshua N. (2008). "Measuring accurate transit parameters". Proceedings of the International Astronomical Union. 4: 99–109. arXiv: 0807.4929v2 . Bibcode:2009IAUS..253...99W. doi:10.1017/S174392130802629X. S2CID   34144676.
    4. ↑ 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

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