Astronomy:WASP-19
WASP-19, formally named Wattle,[7] is a magnitude 12.3 star about 869 light-years (266 parsecs) away, located in the Vela constellation of the southern hemisphere.[8] This star has been found to host a transiting hot Jupiter-type planet in tight orbit.
WASP-19 is older than the Sun, has a fraction of heavy elements above the solar abundance, and is rotating rapidly, being spun up by the tides raised by the giant planet on a close orbit.[5]
Nomenclature
The designation WASP-19 indicates that this was the 19th star found to have a planet by the Wide Angle Search for Planets.
In August 2022, this planetary system was included among 20 systems to be named by the third NameExoWorlds project.[9] The approved names were proposed by a team from Brandon Park Primary School in Wheelers Hill (Melbourne, Australia ), led by scientist Lance Kelly and teacher David Maierhofer [10] and announced in June 2023. WASP-19 is named "Wattle" and its planet is named "Banksia", after the plant genera Wattle (specifically the golden wattle Acacia pycnantha) and Banksia (specifically the scarlet banksia Banksia coccinea) respectively.[7]
Planetary system
In December 2009, the SuperWASP project announced that a hot Jupiter type exoplanet, WASP-19b, was orbiting very close to this star and with the shortest orbital period of any transiting exoplanet known at the time.[8]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b / Banksia | 1.168±0.023 MJ | 0.01634 ± 0.00019 | 0.7888396 ± 0.00000010 | 0 | 78.76 ± 0.13° | 1.18±0.12 RJ |
See also
- List of extrasolar planets
References
- ↑ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific 99 (617): 695–699. doi:10.1086/132034. Bibcode: 1987PASP...99..695R. Vizier query form
- ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Maxted, P. F. L. et al. (2011). "UBV(RI)C photometry of transiting planet hosting stars". Monthly Notices of the Royal Astronomical Society 418 (2): 1039–1042. doi:10.1111/j.1365-2966.2011.19554.x. Bibcode: 2011MNRAS.418.1039M.
- ↑ 4.0 4.1 4.2 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S. https://ui.adsabs.harvard.edu/abs/2006AJ....131.1163S/abstract. Vizier catalog entry
- ↑ 5.0 5.1 Maxted, P. F. L.; Serenelli, A. M.; Southworth, J. (2015), "A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars", Astronomy & Astrophysics 577: A90, doi:10.1051/0004-6361/201525774, Bibcode: 2015A&A...577A..90M
- ↑ 6.0 6.1 6.2 6.3 Torres, Guillermo et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal 757 (2): 161. doi:10.1088/0004-637X/757/2/161. Bibcode: 2012ApJ...757..161T.
- ↑ 7.0 7.1 "2022 Approved Names". IAU. https://www.nameexoworlds.iau.org/2022approved-names.
- ↑ 8.0 8.1 Hebb, L. et al. (2010). "WASP-19b: The Shortest Period Transiting Exoplanet Yet Discovered". The Astrophysical Journal 708 (1): 224–231. doi:10.1088/0004-637X/708/1/224. Bibcode: 2010ApJ...708..224H.
- ↑ "List of ExoWorlds 2022". IAU. 8 August 2022. https://www.nameexoworlds.iau.org/2022exoworlds.
- ↑ https://www.facebook.com/pages/DrBradTucker/100063510852713
- ↑ Mancini, L. et al. (2013). "Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry". Monthly Notices of the Royal Astronomical Society 436 (1): 2–18. doi:10.1093/mnras/stt1394. Bibcode: 2013MNRAS.436....2M.
- ↑ Cite error: Invalid
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Coordinates: 09h 53m 40.07s, −45° 39′ 33.06″
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