WASP-96b
| File:Exoplanet WASP-96 b (NIRISS Transit Light Curve) (weic2206b).jpeg | |
| Discovery[1] | |
|---|---|
| Discovered by | Hellier et al. (WASP) |
| Discovery date | October 2013 |
| Transit | |
| Orbital characteristics[2] | |
| 0.0454±0.0013 AU | |
| Eccentricity | <0.11 |
| 3.4252602(27) d | |
| Inclination | 85.60°±0.20° |
| Semi-amplitude | 64.0+5.3 −4.8 m/s |
| Physical characteristics[2] | |
| 1.200±0.060 RJ | |
| Mass | 0.490+0.049 −0.047 MJ |
Mean density | 0.352+0.068 −0.059 g/cm3 |
| Temperature | 1285 K[1] |
_(weic2206b).jpeg){kind=link}
WASP-96b is a gas giant exoplanet. Its mass is 0.48 times that of Jupiter. It is 0.0453 AU from the class G star WASP-96, which it orbits every 3.4 days. It is about 1,140 light-years away from Earth, in the constellation Phoenix. It was discovered in 2013 by the Wide Angle Search for Planets (WASP).
WASP-96b orbits its Sun-like star WASP-96 every 3.4 Earth days at a distance just one-ninth of the distance between Mercury and the Sun.[3]
The hot-Jupiter exoplanet was found via the transiting method by Coel Hellier et.al. in 2013 as part of the WASP-South survey.[1]
Atmosphere
[edit | edit source]_mres.png){kind=link}
WASP-96b's spectrum was one of the images featured in the initial science release from the James Webb Space Telescope in July 2022.[4] The spectrum confirmed the presence of water, as well as providing evidence for "clouds and hazes" within the planet's atmosphere.[3] Prior to this discovery, WASP-96b was thought to be free of clouds.[5][6]
While the light curve released confirms properties of the planet that had already been determined from other observations – the existence, size, and orbit of the planet – the transmission spectrum revealed previously hidden details of the atmosphere: the unambiguous signature of water, indications of haze, and evidence of clouds that were suspected based on prior observations.[7]
A study in 2023 measured the abundance of certain chemical species in the atmosphere of WASP-96b as seen in the table below.[8] Models of the atmosphere with patchy clouds and hazes best describes the observations through the James Webb Space Telescope.[8]
| Chemical Species[8] | log(VMR)[8] | Concentration |
|---|---|---|
| Water vapor | -3.59+0.35 −0.35 |
257 ppm |
| Carbon monoxide | -3.25+0.91 −5.06 |
562 ppm |
| Carbon dioxide | -4.38+0.47 −0.57 |
41.7 ppm |
| Sodium | -6.85+2.48 −3.10 |
141 ppb |
| Potassium | -8.04+1.22 −1.71 |
9.12 ppb |
See also
[edit | edit source]References
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- ^ a b c d Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
External links
[edit | edit source]Error creating thumbnail: File missing Media related to Lua error in Module:Commons_link at line 62: attempt to index field 'wikibase' (a nil value). at Wikimedia Commons
