WASP-54

Last updated
WASP-54
Observation data
Epoch J2000       Equinox J2000
Constellation Virgo [1]
Right ascension 13h 41m 49.0301s [2]
Declination −00° 07′ 41.033″ [2]
Apparent magnitude  (V)10.41 [3]
Characteristics
Evolutionary stage subgiant [4] [5]
Spectral type F8V [6]
Astrometry
Radial velocity (Rv)−2.71±0.22 [2] km/s
Proper motion (μ)RA: −10.810 mas/yr [2]
Dec.: −24.744 mas/yr [2]
Parallax (π)3.9859±0.0200  mas [2]
Distance 818 ± 4  ly
(251 ± 1  pc)
Orbit [7]
PrimaryWASP-54A
CompanionWASP-54B
Semi-major axis (a)5.728±0.006"
(1450 AU)
Details [8]
WASP-54A
Mass 1.213±0.032  M☉
Radius 1.828+0.091
−0.081  R☉
Surface gravity (log g)4.00±0.02 [9]   cgs
Temperature 6,100±100  K
Metallicity [Fe/H]−0.27±0.08  dex
Rotational velocity (v sin i)4.0±0.8 km/s
Age 6.9+1.0
−1.9  Gyr
WASP-54B
Mass 0.19±0.01 [7]   M☉
Temperature 3,216+26
−25 [7]   K
Other designations
BD+00 3088, TOI-1833, TIC 61098812, WASP-54, TYC 4967-678-1, GSC 04967-00678, 2MASS J13414903-0007410 [10]
Database references
SIMBAD A
B
Exoplanet Archive data

WASP-54, also known as BD+00 3088, is a binary star system about 818 light-years away in the constellation Virgo. The primary, WASP-54A, is an F-type subgiant, accompanied by the red dwarf WASP-54B on a wide orbit. WASP-54 is depleted in heavy elements, having 55% of the solar abundance of iron. [8] WASP-54 is slightly older than the Sun at 6.9+1.0
−1.9 billion years. [8]

Contents

Star system

A multiplicity survey in 2017 detected a red dwarf stellar companion WASP-54B 5.7″ away from WASP-54A. [11] The companion was proven to be co-moving in 2020. [7]

Planetary system

In 2012 a transiting hot Jupiter planet, WASP-54b, was detected on a tight orbit around WASP-54A. [12] The planetary equilibrium temperature is 1742+49
−69  K . [12]

The WASP-54 planetary system [8]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b0.606±0.018  MJ 0.04988+0.00043
−0.00045		3.6936411(59)<0.0684.97±0.61° 1.653+0.090
−0.083  RJ

References

  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 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. ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355. Bibcode:2000A&A...355L..27H.
  4. ↑ Irwin, Stacy Ann (2015). Analysis of Angular Momentum in Planetary Systems and Host Stars (Thesis). Bibcode:2015PhDT.........5I.
  5. ↑ Huang, Yang; Beers, Timothy C.; Wolf, Christian; Lee, Young Sun; Onken, Christopher A.; Yuan, Haibo; Shank, Derek; Zhang, Huawei; Wang, Chun; Shi, Jianrong; Fan, Zhou (2022). "Beyond Spectroscopy. I. Metallicities, Distances, and Age Estimates for over 20 Million Stars from SMSS DR2 and Gaia EDR3". The Astrophysical Journal. 925 (2): 164. arXiv: 2104.14154 . Bibcode:2022ApJ...925..164H. doi: 10.3847/1538-4357/ac21cb .
  6. ↑ Pickles, A.; Depagne, É. (2010). "All-Sky Spectrally Matched UBVRI - ZY and u‧ g‧ r‧ i‧ z‧ Magnitudes for Stars in the Tycho2 Catalog". Publications of the Astronomical Society of the Pacific. 122 (898): 1437. arXiv: 1011.2020 . Bibcode:2010PASP..122.1437P. doi:10.1086/657947.
  7. 1 2 3 4 Bohn, A. J.; Southworth, J.; Ginski, C.; Kenworthy, M. A.; Maxted, P. F. L.; Evans, D. F. (2020). "A multiplicity study of transiting exoplanet host stars. I. High-contrast imaging with VLT/SPHERE". Astronomy & Astrophysics. 635: A73. arXiv: 2001.08224 . Bibcode:2020A&A...635A..73B. doi:10.1051/0004-6361/201937127. S2CID   210861118.
  8. 1 2 3 4 Bonomo, A. S.; Desidera, S.; Benatti, S.; Borsa, F.; Crespi, S.; Damasso, M.; Lanza, A. F.; Sozzetti, A.; Lodato, G.; Marzari, F.; Boccato, C.; Claudi, R. U.; Cosentino, R.; Covino, E.; Gratton, R.; Maggio, A.; Micela, G.; Molinari, E.; Pagano, I.; Piotto, G.; Poretti, E.; Smareglia, R.; Affer, L.; Biazzo, K.; Bignamini, A.; Esposito, M.; Giacobbe, P.; Hébrard, G.; Malavolta, L.; et al. (2017). "The GAPS Programme with HARPS-N@TNG XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics. A107: 602. arXiv: 1704.00373 . Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID   118923163.
  9. ↑ Correcting the spectroscopic surface gravity using transits and asteroseismology No significant effect on temperatures or metallicities with ARES and MOOG in local thermodynamic equilibrium
  10. ↑ "BD+00 3088". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2025-05-05.
  11. ↑ Evans, D. F.; Southworth, J.; Smalley, B.; Jørgensen, U. G.; Dominik, M.; Andersen, M. I.; Bozza, V.; Bramich, D. M.; Burgdorf, M. J.; Ciceri, S.; d'Ago, G.; Figuera Jaimes, R.; Gu, S.-H.; Hinse, T. C.; Henning, Th.; Hundertmark, M.; Kains, N.; Kerins, E.; Korhonen, H.; Kokotanekova, R.; Kuffmeier, M.; Longa-Peña, P.; Mancini, L.; MacKenzie, J.; Popovas, A.; Rabus, M.; Rahvar, S.; Sajadian, S.; Snodgrass, C.; et al. (2017). "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016". Astronomy & Astrophysics. 610: A20. arXiv: 1709.07476 . Bibcode:2018A&A...610A..20E. doi:10.1051/0004-6361/201731855. S2CID   53400492.
  12. 1 2 Faedi, F.; Pollacco, D.; Barros, S. C. C.; Brown, D.; Collier Cameron, A.; Doyle, A. P.; Enoch, R.; Gillon, M.; Gómez Maqueo Chew, Y.; Hébrard, G.; Lendl, M.; Liebig, C.; Smalley, B.; Triaud, A. H. M. J.; West, R. G.; Wheatley, P. J.; Alsubai, K. A.; Anderson, D. R.; Armstrong, D.; Bento, J.; Bochinski, J.; Bouchy, F.; Busuttil, R.; Fossati, L.; Fumel, A.; Haswell, C. A.; Hellier, C.; Holmes, S.; Jehin, E.; et al. (2012). "WASP-54b, WASP-56b and WASP-57b: Three new sub-Jupiter mass planets from SuperWASP". Astronomy & Astrophysics. 551: A73. arXiv: 1210.2329 . doi:10.1051/0004-6361/201220520. S2CID   14346225.
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