WASP-94 is a binary star system located about 690 light-years (210 parsecs ) away in the constellation Microscopium . It consists of two F-type stars separated by ″ projected separation of au exoplanets .[ 3]
The binary system was first observed by John Herschel in 1834 and catalogued as HJ 5234. The designation WASP-94 comes from the Wide Angle Search for Planets , and has been used since the system was found to host planets in 2014.[ 3] spectral types , they differ in elemental abundance – WASP-94A has fewer volatile elements and more refractory elements than WASP-94B.[ 6]
Planetary system
The two stars host a single known planet each. Both are hot Jupiters , gas giant planets completing orbits around their stars in just a few days.[ 3]
Diagram of the WASP-94 system WASP-94Ab transits its host star, and it has also been detected by the radial velocity method .[ 3] inflated radius . It has an equilibrium temperature of ± 75 K [ 10] retrograde and misaligned with the rotation of its host star.[ 11] sodium ,[ 10] water vapor and carbon dioxide being detected.[ 12]
WASP-94Bb is a non-transiting planet that has been detected only by radial velocity, so it has no measured radius and true mass. Its minimum mass is 62% the mass of Jupiter.[ 3]
See also
Other systems with multiple planet-hosting stars:
References
^ 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 .^ a b c d e f 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 .^ a b c d e f g h i j k l m n o p q r s Neveu-VanMalle, M.; Queloz, D.; et al. (December 2014). "WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system" . Astronomy & Astrophysics 572 : A49. arXiv :1409.7566 Bibcode :2014A&A...572A..49N . doi :10.1051/0004-6361/201424744 ^ a b c d e f 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 .^ Ayres, Thomas (2023). "In the Trenches of the Solar-Stellar Connection. VII. Wilson-Bappu 2022" . The Astrophysical Journal Supplement Series . 266 (1): 6. Bibcode :2023ApJS..266....6A . doi :10.3847/1538-4365/acb535 ^ a b c d e f g h i Teske, Johanna K.; Khanal, Sandhya; Ramírez, Ivan (March 2016). "The Curious Case of Elemental Abundance Differences in the Dual Hot Jupiter Hosts WASP-94A and B" . The Astrophysical Journal 819 (1): 19. arXiv :1601.01731 Bibcode :2016ApJ...819...19T . doi :10.3847/0004-637X/819/1/19 ^ Yu, Jie; Khanna, Shourya; Themessl, Nathalie; Hekker, Saskia; Dréau, Guillaume; Gizon, Laurent; Bi, Shaolan (2023). "Revised Extinctions and Radii for 1.5 Million Stars Observed by APOGEE, GALAH, and RAVE" . The Astrophysical Journal Supplement Series . 264 (2): 41. arXiv :2206.00046 Bibcode :2023ApJS..264...41Y . doi :10.3847/1538-4365/acabc8 ^ "CD-34 14724A" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 18 May 2025 .^ "CD-34 14724B" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 18 May 2025 .^ a b Ahrer, E.; Wheatley, P. J.; et al. (March 2022). "LRG-BEASTS: Sodium absorption and Rayleigh scattering in the atmosphere of WASP-94A b using NTT/EFOSC2" . Monthly Notices of the Royal Astronomical Society 510 (4): 4857– 4871. arXiv :2201.02212 Bibcode :2022MNRAS.510.4857A . doi :10.1093/mnras/stab3805 ^ Ahrer, E.; Seidel, J. V.; et al. (May 2024). "Atmospheric characterization and tighter constraints on the orbital misalignment of WASP-94 A b with HARPS" . Monthly Notices of the Royal Astronomical Society 530 (3): 2749– 2759. arXiv :2404.06550 Bibcode :2024MNRAS.530.2749A . doi :10.1093/mnras/stae1000 ^ Ahrer, Eva-Maria; Gandhi, Siddharth; et al. (May 2025). "Tracing the formation and migration history: molecular signatures in the atmosphere of misaligned hot Jupiter WASP-94Ab using JWST NIRSpec/G395H" . Monthly Notices of the Royal Astronomical Society 540 (3): 2535– 2554. arXiv :2505.11224 doi :10.1093/mnras/staf819 ^ 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
