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Table 3
Observed C/O and/or inferred ranges of possible C/O for planets that orbit at < 0.1 AU.
| Planet | Mass (M⊕) | C/O | Reference | C/O range | Reference |
|---|---|---|---|---|---|
| 51 Peg b | 149 | 0.25 | Brogi et al. (2013) | 0.007 < C/O < 0.95 | Birkby et al. (2017) |
| GJ 436 b | 22 | 0.7 | Morley et al. (2017) | 0.5 < C/O < 1 | Madhusudhan & Seager (2011) |
| HD 179949 b | 292 | 0.5 | Brogi et al. (2014) | ||
| HD 189733 b | 363 | 0.5 | Brogi et al. (2016) | C/O < 0.92 | Benneke (2015) |
| HD 209458 b | 219 | 0.5 | Rimmer & Helling (2016) | C/O < 0.86 | Benneke (2015) |
| WASP-12 b | 467 | 0.5 | Stevenson et al. (2014) | C/O < 0.80 | Benneke (2015) |
| WASP-43 b | 652 | 0.319 | Feng et al. (2016) | C/O < 0.87 | Benneke (2015) |
| HAT-P-1 b | 167 | C/O < 0.77 | Benneke (2015) | ||
| HAT-P-26 b | 19 | C/O < 0.33 | MacDonald & Madhusudhan (2019) | ||
| WASP-17 b | 154 | C/O < 0.89 | Benneke (2015) | ||
| WASP-19 b | 354 | C/O < 0.82 | Benneke (2015) |
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