WASP-5b

Last updated
WASP-5b
Exoplanet Comparison WASP-5 b.png
Size comparison of WASP-5b with Jupiter.
Discovery [1]
Discovered by Anderson et al. (SuperWASP)
Discovery site SAAO
Discovery dateOctober 31, 2007
Transit
Orbital characteristics [2]
0.02739 ± 0.00039 AU (4,097,000 ± 58,000 km)
Eccentricity <0.012
1.62842953(52)  d
Inclination 85.8°±1.1°
Semi-amplitude 268.2+4.6
−4.2
  m/s
Star WASP-5
Physical characteristics [2]
1.175±0.056  RJ
Mass 1.590+0.053
−0.052
  MJ
Mean density
1.21+0.20
−0.16
  g/cm3
28.6  m/s2
2.9 g
Temperature 2000±90  K (1,730 °C; 3,140 °F) [3]

    WASP-5b is an exoplanet orbiting the star WASP-5 located approximately 1000 light-years away in the constellation Phoenix. The planet's mass and radius indicate that it is a gas giant with a similar bulk composition to Jupiter. The small orbital distance of WASP-5 b around its star means it belongs to a class of planets known as hot Jupiters. The planetary equilibrium temperature would be 1717 K, [1] but the measured dayside temperature is higher, with a 2015 study finding 2500±100 K [4] and a 2020 study finding 2000±90 K. [3]

    Contents

    A study in 2012, utilizing the Rossiter–McLaughlin effect, determined that the planetary orbit is probably aligned with the equatorial plane of the star, with misalignment equal to 12.1+8
    10
    °. [5]

    See also

    Related Research Articles

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    References

    1. 1 2 Anderson, D.R.; Gillon, M.; Hellier, C.; Maxted, P. F. L.; Pepe, F.; Queloz, D.; Wilson, D. M.; Collier Cameron, A.; Smalley, B.; Lister, T. A.; Bentley, S. J.; Blecha, A.; Christian, D. J.; Enoch, B.; Hebb, L.; Horne, K.; Irwin, J.; Joshi, Y. C.; Kane, S. R.; Marmier, M.; Mayor, M.; Parley, N. R.; Pollacco, D. L.; Pont, F.; Ryans, R.; Ségransan, D.; Skillen, I.; Street, R. A.; Udry, S.; et al. (2008). "WASP-5b: a dense, very hot Jupiter transiting a 12th-mag Southern-hemisphere star". Monthly Notices of the Royal Astronomical Society: Letters. 387 (1): L4–L7. arXiv: 0801.1685 . Bibcode:2008MNRAS.387L...4A. doi: 10.1111/j.1745-3933.2008.00465.x . S2CID   36741190.
    2. 1 2 Bonomo, A. S.; Desidera, S.; et al. (June 2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics . 602: A107. arXiv: 1704.00373 . Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID   118923163.
    3. 1 2 Wong, Ian; Shporer, Avi; Daylan, Tansu; Benneke, Björn; Fetherolf, Tara; Kane, Stephen R.; Ricker, George R.; Vanderspek, Roland; Latham, David W.; Winn, Joshua N.; Jenkins, Jon M.; Boyd, Patricia T.; Glidden, Ana; Goeke, Robert F.; Sha, Lizhou; Ting, Eric B.; Yahalomi, Daniel (2020), "Systematic Phase Curve Study of Known Transiting Systems from Year One of the TESS Mission", The Astronomical Journal, 160 (4): 155, arXiv: 2003.06407 , Bibcode:2020AJ....160..155W, doi: 10.3847/1538-3881/ababad , S2CID   212717799
    4. Zhou, G.; Bayliss, D. D. R.; Kedziora-Chudczer, L.; Tinney, C. G.; Bailey, J.; Salter, G.; Rodriguez, J. (2015). "Secondary eclipse observations for seven hot-Jupiters from the Anglo-Australian Telescope". Monthly Notices of the Royal Astronomical Society. 454 (3): 3002–3019. arXiv: 1509.04147 . Bibcode:2015MNRAS.454.3002Z. doi: 10.1093/mnras/stv2138 .
    5. 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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