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WASP-19

Coordinates: Sky map 09h 53m 40.07s, −45° 39′ 33.06″
From Wikipedia, the free encyclopedia
WASP-19 / Wattle
Observation data
Epoch J2000.0      Equinox ICRS
Constellation Vela[1]
Right ascension 09h 53m 40.07656s[2]
Declination −45° 39′ 33.0572″[2]
Apparent magnitude (V) 12.312 ± 0.017[3]
Characteristics
Evolutionary stage main sequence[2]
Spectral type G8V[4]
Apparent magnitude (B) 13.05[5]
Apparent magnitude (R) 12.12[5]
Apparent magnitude (I) 11.35[5]
Apparent magnitude (J) 10.911 ± 0.026[6]
Apparent magnitude (H) 10.602 ± 0.022[6]
Apparent magnitude (K) 10.481 ± 0.023[6]
B−V color index 1.3[citation needed]
V−R color index 0.1[citation needed]
R−I color index 0.82[citation needed]
Variable type planetary transit
Astrometry
Radial velocity (Rv)21.41±0.95[2] km/s
Proper motion (μ) RA: −35.457 mas/yr[2]
Dec.: 17.378 mas/yr[2]
Parallax (π)3.7516±0.0090 mas[2]
Distance869 ± 2 ly
(266.6 ± 0.6 pc)
Absolute magnitude (MV)5.3[citation needed]
Details[7]
Mass0.965+0.091
−0.095 M☉
Radius1.006+0.031
−0.034 R☉
Luminosity0.905+0.071
−0.069 L☉
Surface gravity (log g)4.417+0.020
−0.021 cgs
Temperature5616+66
−65 K
Metallicity [Fe/H]0.04+0.25
−0.30 dex
Rotation11.76±0.09 d[8]
Rotational velocity (v sin i)4.0 ± 1.0[9] km/s
Age6.4+4.1
−3.5 Gyr
Other designations
Wattle, TOI-655, TIC 35516889, WASP-19, GSC 08181-01711, 2MASS J09534008-4539330, USNO-B1.0 0443-00193111[5]
Database references
SIMBADdata
Exoplanet Archivedata

WASP-19, formally named Wattle,[10] is a magnitude 12.3 star about 869 light-years (266 parsecs) away, located in the Vela constellation of the Southern Hemisphere.[4] This star has been found to host a transiting hot Jupiter-type planet in a 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.[8]

Nomenclature

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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.[11] The approved names were proposed by a team from Brandon Park Primary School in Wheelers Hill (Melbourne, Australia), led by scientist Lance C. Kelly and teacher David Maierhofer[12][13] 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.[10]

Planetary system

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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.[4]

The WASP-19 planetary system[7]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination
(°)		 Radius
b / Banksia 1.154+0.078
−0.080 MJ		 0.01652+0.00050
−0.00056		 0.78883852(82) 0.0126+0.014
−0.0089		 79.08+0.34
−0.37		 1.415+0.044
−0.048 RJ

References

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  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 7 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. ↑ 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. arXiv:1108.0349. Bibcode:2011MNRAS.418.1039M. doi:10.1111/j.1365-2966.2011.19554.x. S2CID 117056033.
  4. 1 2 3 Hebb, L.; et al. (2010). "WASP-19b: The Shortest Period Transiting Exoplanet Yet Discovered". The Astrophysical Journal. 708 (1): 224–231. arXiv:1001.0403. Bibcode:2010ApJ...708..224H. doi:10.1088/0004-637X/708/1/224. S2CID 119189785.
  5. 1 2 3 4 "WASP-19". SIMBAD. Centre de données astronomiques de Strasbourg.
  6. 1 2 3 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331. Vizier catalog entry
  7. 1 2 Cortés-Zuleta, Pía; Rojo, Patricio; et al. (April 2020). "TraMoS. V. Updated ephemeris and multi-epoch monitoring of the hot Jupiters WASP-18Ab, WASP-19b, and WASP-77Ab". Astronomy & Astrophysics. 636: A98. arXiv:2001.11112. Bibcode:2020A&A...636A..98C. doi:10.1051/0004-6361/201936279. S2CID 241596186.
  8. 1 2 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, arXiv:1503.09111, Bibcode:2015A&A...577A..90M, doi:10.1051/0004-6361/201525774, S2CID 53324330
  9. ↑ Torres, Guillermo; et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal. 757 (2). 161. arXiv:1208.1268. Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161. S2CID 16580774.
  10. 1 2 "2022 Approved Names". nameexoworlds.iau.org. IAU. Retrieved 7 June 2023.
  11. ↑ "List of ExoWorlds 2022". nameexoworlds.iau.org. IAU. 8 August 2022. Retrieved 27 August 2022.
  12. ↑ "Facebook". www.facebook.com.
  13. ↑ https://nameexoworlds.iau.org/2022approved-names?pgid=lieirelz-ee6d54d6-a64c-4708-a2d5-d7ceb7071768,

Further reading

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Retrieved from "https://en.wikipedia.org/w/index.php?title=WASP-19&oldid=1341552837"