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WASP or Wide Angle Search for Planets is an international consortium of several academic organisations performing an ultra-wide angle search for exoplanets using transit photometry. The array of robotic telescopes aims to survey the entire sky, simultaneously monitoring many thousands of stars at an apparent visual magnitude from about 7 to 13.
WASP-16b is an extrasolar planet that travels around its star, WASP-16, every 3.12 days. Likely a hot Jupiter. Its mass is near .855 of Jupiter, the radius is 1.008 of Jupiter. It was discovered in 2009 by a team led by T.A. Lister as part of the Wide Angle Search for Planets project.
WASP-16 is a magnitude 11 yellow dwarf main sequence star, with characteristics similar to the Sun, located in the Virgo constellation.
HAT-P-27, also known as WASP-40, is the primary of a binary star system about 659 light-years away. It is a G-type main-sequence star. The star's age is similar to the Sun's at 4.4 billion years. HAT-P-27 is enriched in heavy elements, having a 195% concentration of iron compared to the Sun.
WASP-79b, also known as Pollera, is an extrasolar planet orbiting the star WASP-79(Montuno). This planet is in the constellation Eridanus, and is about 810 light-years from Earth.
WASP-34, also named Amansinaya, is a sunlike star of spectral type G5V that has 1.01 ± 0.07 times the mass and 0.93 ± 0.12 times the diameter of the Sun. It rotates on its axis every 34 ± 15 days, indicating it is around 6.7 billion years old.
WASP-26 is a yellow main sequence star in the constellation of Cetus.
WASP-25 is a yellow main sequence star in the constellation of Hydra.
WASP-78, is a single F-type main-sequence star about 2350 light-years away. It is likely to be younger than the Sun at 3.4+1.5
−0.8 billion years. WASP-78 is depleted in heavy elements, having a 45% concentration of iron compared to the Sun.
WASP-72 is the primary of a binary star system. It is an F7 class dwarf star, with an internal structure just on the verge of the Kraft break. It is orbited by a planet WASP-72b. The age of WASP-72 is younger than the Sun at 3.55±0.82 billion years.
BD+00 316 is an ordinary star with a close-orbiting planetary companion in the equatorial constellation of Cetus. It is also known as WASP-71 since 2019; BD+00 316 is the stellar identifier from the Bonner Durchmusterung catalogue. With an apparent visual magnitude of 10.56, it is too faint to be visible to the naked eye. This star is located at a distance of 1,160 light-years based on parallax measurements, and is drifting further away with a heliocentric radial velocity of 7.7 km/s.
WASP-62, formally named Naledi, is a single star about 573 light-years away. It is an F class main-sequence star, orbited by a planet, WASP-62b. The age of WASP-62 is much younger than the Sun at 0.8±0.6 billion years, and it has a metal abundance similar to the Sun.
WASP-61 is a single F-type main-sequence star about 1560 light-years away. The star is likely younger than the Sun at approximately 3.8+1.8
−0.9 billion years. WASP-61 is depleted in heavy elements, having just 40% of the solar abundance of iron.
WASP-54, also known as BD+00 3088, is a binary star system about 825 light-years away. The primary, WASP-54A, is a F-type main-sequence star, 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. The age of WASP-54 is slightly older than the Sun's at 6.9+1.0
−1.9 billion years.
WASP-41 is a G-type main-sequence star. Its surface temperature is 5450±150 K. WASP-41 is similar to the Sun in its concentration of heavy elements, with a metallicity Fe/H index of −0.080±0.090, but is much younger at an age of 2.289±0.077 billion years. The star does exhibit strong starspot activity, with spots covering 3% of the stellar surface.
WASP-75 is a F-type main-sequence star about 980 light-years away. The star is much younger than the Sun at approximately 2.9±0.2 billion years. WASP-75 is similar to the Sun in its concentration of heavy elements.
WASP-84, also known as BD+02 2056, is a G-type main-sequence star 327 light-years away in the constellation Hydra. Its surface temperature is 5350±31 K and is slightly enriched in heavy elements compared to the Sun, with a metallicity Fe/H index of 0.05±0.02. It is rich in carbon and depleted of oxygen. WASP-84's age is probably older than the Sun at 8.5+4.1
−5.5 billion years. The star appears to have an anomalously small radius, which can be explained by the unusually high helium fraction or by it being very young.
References
- 1 2 3 4 5 6 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 .
- ↑ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
- ↑ "WASP-32". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2020-05-09.
- 1 2 3 4 5 6 7 8 Maxted, P. F. L.; Anderson, D. R.; Collier Cameron, A.; Gillon, M.; Hellier, C.; Queloz, D.; Smalley, B.; Triaud, A. H. M. J.; West, R. G.; Enoch, R.; Lister, T. A.; Pepe, F.; Pollacco, D. L.; Ségransan, D.; Skillen, I.; Udry, S. (2010). "WASP-32b: A Transiting Hot Jupiter Planet Orbiting a Lithium-Poor, Solar-Type Star". Publications of the Astronomical Society of the Pacific. 122 (898): 1465–1470. arXiv: 1010.1742 . Bibcode:2010PASP..122.1465M. doi:10.1086/657658. S2CID 55625415.
- ↑ A star and its orbiting planet now bear names with Singapore connection
- ↑ Brothwell, R. D.; Watson, C. A.; Hébrard, G.; Triaud, A. H. M. J.; Cegla, H. M.; Santerne, A.; Hébrard, E.; Anderson, D. R.; Pollacco, D.; Simpson, E. K.; Bouchy, F.; Brown, D. J. A.; Chew, Y. Gómez Maqueo; Cameron, A. Collier; Armstrong, D. J.; Barros, S. C. C.; Bento, J.; Bochinski, J.; Burwitz, V.; Busuttil, R.; Delrez, L.; Doyle, A. P.; Faedi, F.; Fumel, A.; Gillon, M.; Haswell, C. A.; Hellier, C.; Jehin, E.; Kolb, U.; et al. (2014). "A window on exoplanet dynamical histories: Rossiter–Mc Laughlin observations of WASP-13b and WASP-32b". Monthly Notices of the Royal Astronomical Society. 440 (4): 3392–3401. arXiv: 1403.4095 . Bibcode:2014MNRAS.440.3392B. doi: 10.1093/mnras/stu520 . S2CID 118435056.
- ↑ Lei-Lei Sun, Sheng-Hong Gu, Xiao-Bin Wang at al., "Long-term transit timing monitoring and homogenous study of WASP-32", 2015
- ↑ Planet WASP-32 b
