Long-term monitoring of WASP-19 b: Signs of apsidal precession and molecular signatures

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Volume 708 (April 2026)

A&A, 708 (2026) A313

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Table 1

Combined photometric parameters for WASP-19 compared with previous studies.

This work	r_p/r_* 0.1415 ± 0.0014	r_* + r_p 0.3210 ± 0.0015	i (deg) 79.61 ± 0.0984
H10	0.1424 ± 0.02	0.3222 ± 0.03^a	80.7 ± 0.7
AL12	0.1425 ± 0.0014	0.3432 ± 0.002^a	78.02 ± 2
AN13	0.1431 ± 0.0015	0.3356 ± 0.0032^a	79.42 ± 0.39
TR13	0.1428 ± 0.0006	0.3301 ± 0.0019^a	78.94 ± 0.23
H11	${0.1433}_{- 0.0030}^{+ 0.0018}$ $Mathematical equation: $0.1433^{+0.0018}_{-0.0030}$$	${0.3282}_{- 0.0063}^{+ 0.0070}$ $Mathematical equation: $0.3282^{+0.0070}_{-0.0063}$$	${78.85}_{- 0.66}^{+ 0.55}$ $Mathematical equation: $78.85^{+0.55}_{-0.66}$$
S17	${0.1416}_{- 0.0018}^{+ 0.0019}$ $Mathematical equation: $0.1416^{+0.0019}_{-0.0018}$$	${0.3205}_{- 0.0030}^{+ 0.0038}$ $Mathematical equation: $0.3205^{+0.0038}_{-0.0030}$$	${80.36}_{- 0.81}^{+ 0.76}$ $Mathematical equation: $80.36^{+0.76}_{-0.81}$$
P20	0.145 ± 0.006	0.3245 ± 0.00147^a	79.3 ± 1.3

Notes. The values found by H10 (Hebb et al. 2010); AL12 (Albrecht et al. 2012); AN13 (Anderson et al. 2013); TR13 (Tregloan-Reed et al. 2013); H11 (Hellier et al. 2011); S17 (Sedaghati et al. 2017) and P20 (Petrucci et al. 2020). The photometric parameters are the weighted means from the datasets, which have measured uncertainties. The sum of the fractional radii from the literature was calculated using the respective values for R_p/R_* and a/R_*.

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