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Table 1
Dominating gas-phase species per element for WASP-18b.
| Day | Night | Terminators | ||
|---|---|---|---|---|
| Longitude ϕ = −90° | Longitude ϕ = 90° | |||
| Al | p < 10−2 bar: Al+ p > 10−2 bar: Al at high pgas: AlH, AlOH |
AlOH, AlO2H at high pgas: Al, Al+ |
pgas < 10−2 bar: Al pgas > 10−2 bar: AlOH at high pgas: Al, AlH, AlOH |
Lat θ = 45°: pgas < 10−2 bar: Al pgas > 10−2 bar: AlOH at high pgas: Al, AlH, AlOH. Lat θ = 0°: pgas < 10−3 bar: Al+ pgas > 10−3 bar: AlH, AlOH at high pgas: Al, AlH, AlOH |
| Ca | pgas < 10−2 bar: Ca+ pgas > 10−2 bar: Ca |
pgas < 10−3 bar: Ca(OH)2, CaCl2 pgas = 10−3−< 1 bar: Ca(OH)2 pgas >1bar: Ca |
Ca if clouds: Ca(OH)2, CaCl2 |
Ca |
| C | CO | CO, CH4 | CO; CH4 at high p | CO; CH4 at high p |
| Fe | Fe, Fe+ | Fe; low pgas: Fe(OH)2 high pgas: FeH |
Fe | Fe |
| H | pgas < 10−1 bar: H pgas > 10−1 bar: H2 |
H2; at high pgas: H | H2; pgas < 10−3 bar: H | H2; p < 10−3 bar: H |
| Mg | Mg; pgas < 10−2 bar: Mg+ (many differences for Mg at each profile) |
Lat θ = 45°: pgas < 10−3 &pgas > 10−1: Mg pgas = 10−3−10−1 bar: Mg(OH)2 Lat θ = 0°: Mg pgas < 10−4 bar: Mg(OH)2 highest pgas: MgH |
Mg MgH at high pgas |
Mg MgH at high pgas |
| O | CO, pgas < 10−2 bar: O pgas > 10−2 bar: H2O |
CO, H2O | CO all pgas/ pgas>10−3 bar: H2O |
CO; pgas > 10−3: H2O |
| Si | pgas < 10−2: Si pgas > 10−2: SiO |
SiS, SiO | SiO | SiO |
| S | low pgas: S high pgas: H2S |
H2S | pgas < 10−3: S pgas > 10−3: H2S |
pgas < 10−3: S pgas > 10−3: H2S |
| Ti | pgas < 10−2: Ti+ pgas > 10−2: Ti, TiO |
pgas < 1 bar: TiO2 pgas > 1 bar: TiO highest pgas: Ti |
TiO TiO2 when clouds form |
TiO pgas < 10−3/ highest pgas: Ti |
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