The effect of atmospheric chemistry on the optical geometric albedos of hot Jupiters

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Volume 710 (June 2026)

A&A, 710 (2026) A23

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Table A.1

Collection of hot Jupiter exoplanets with their reported geometric albedo (A_g) and other stellar and planetary parameters.

Object	T_* [K]	Fe/H	T_eq [K]	log(g) [cgs]	a/R_*	Band	A_g
CoRotT-2b	5625 ± 120^a	0.0 ± 0.1^a	1556 ± 27	3.58 ± 0.03^e	6.70 ± 0.03^e	Corot	${0.08}_{- 0.04}^{+ 0.08}$ $Mathematical equation: $0.08^{+0.08}_{-0.04}$$ ^f
HAT-P-7b	6350 ± 80^a	0.26 ± 0.08^a	2264 ± 21	3.30 ± 0.09^g	${4.1545}_{- 0.0025}^{+ 0.0029}$ $Mathematical equation: $4.1545^{+0.0029}_{-0.0025}$$ ^g	Kepler	0.09 ± 0.02^h
Kepler-7b	5933 ± 50^a	0.11 ± 0.05^a	1670 ± 17	2.612 ± 0.052^a	6.637 ± 0.021^g	Kepler	${0.25}_{- 0.02}^{+ 0.01}$ $Mathematical equation: $0.25^{+0.01}_{-0.02}$$ ^m
Kepler-41b	5750 ± 100^a	0.38 ± 0.11^a	1808 ± 32	2.926 ± 0.057^a	5.053 ± 0.021^g	Kepler	${0.13}_{- 0.02}^{+ 0.01}$ $Mathematical equation: $0.13^{+0.01}_{-0.02}$$ ^h
Qatar-1b	$5013_{- 88}^{+ 93}$ $Mathematical equation: $5013^{+93}_{-88}$$ ^k	0.171 ± 0.096^k	1400 ± 28	3.39 ± 0.03^k	${6.41}_{- 0.10}^{+ 0.11}$ $Mathematical equation: $6.41^{+0.11}_{-0.10}$$ ⁱ	TESS	0.14 ± 0.11ⁱ
TrES-2b	5850 ± 50^a	−0.15 ± 0.1^a	1458 ± 18	3.30 ± 0.03^a	${7.903}_{- 0.016}^{+ 0.019}$ $Mathematical equation: $7.903^{+0.019}_{-0.016}$$ ^g	Kepler	${0.01}_{- 0.01}^{+ 0.00}$ $Mathematical equation: $0.01^{+0.00}_{-0.01}$$ ^h
TrES-3b	5650 ± 75^a	−0.19 ± 0.08^a	1613 ± 50	3.40 ± 0.03^a	${5.82}_{- 0.13}^{+ 0.12}$ $Mathematical equation: $5.82^{+0.12}_{-0.13}$$ ^j	TESS	0.14 ± 0.13ⁱ
WASP-4b	5436 ± 34^a	−0.05 ± 0.04^a	1648 ± 13	3.213 ± 0.098^a	${5.438}_{- 0.057}^{+ 0.044}$ $Mathematical equation: $5.438^{+0.044}_{-0.057}$$ ^q	TESS	0.09 ± 0.09^q
WASP-5b	5770 ± 65^a	0.09 ± 0.04^a	1762 ± 41	3.455 ± 0.043^a	5.36 ± 0.22^q	TESS	${0.0002}_{- 0.174}^{+ 0.166}$ $Mathematical equation: $0.0002^{+0.166}_{-0.174}$$ ^q
WASP-12b	6250 ± 100^a	0.32 ± 0.12^a	2526 ± 48	3.015 ± 0.059^a	${3.062}_{- 0.066}^{+ 0.063}$ $Mathematical equation: $3.062^{+0.063}_{-0.066}$$ ⁱ	TESS	0.13 ± 0.06ⁱ
WASP-19b	5500 ± 100^a	0.02 ± 0.09^a	2055 ± 42	3.222 ± 0.048^a	${3.582}_{- 0.067}^{+ 0.074}$ $Mathematical equation: $3.582^{+0.074}_{-0.067}$$ ^q	TESS	0.17 ± 0.07^q
WASP-33b	7430 ± 100^r	0.1 ± 0.2^r	2764 ± 37	3.459 ± 0.098^t	3.614 ± 0.009^s	TESS	−0.04 ± 0.04^s
WASP-36b	5900 ± 150^a	−0.26 ± 0.1^a	1738 ± 59	3.540 ± 0.023^a	${5.76}_{- 0.27}^{+ 0.26}$ $Mathematical equation: $5.76^{+0.26}_{-0.27}$$ ^q	TESS	0.16 ± 0.15^q
WASP-43b	4798 ± 216^u	−0.13 ± 0.08^u	1559 ± 71	3.675 ± 0.019^a	${4.734}_{- 0.053}^{+ 0.054}$ $Mathematical equation: $4.734^{+0.054}_{-0.053}$$ ^q	TESS	0.13 ± 0.06^q
WASP-46b	5725 ± 39^u	−0.18 ± 0.03^u	1630 ± 36	3.533 ± 0.036^a	${6.17}_{- 0.24}^{+ 0.28}$ $Mathematical equation: $6.17^{+0.28}_{-0.24}$$ ^q	TESS	0.38 ± 0.27^q
WASP-64b	5550 ± 150^a	−0.08 ± 0.11^a	1669 ± 54	3.272 ± 0.038^a	${5.53}_{- 0.25}^{+ 0.14}$ $Mathematical equation: $5.53^{+0.14}_{-0.25}$$ ^q	TESS	0.38 ± 0.26^q
WASP-77Ab	5500 ± 80^a	0.00 ± 0.11^a	1712 ± 30	3.475 ± 0.020^a	${5.162}_{- 0.080}^{+ 0.120}$ $Mathematical equation: $5.162^{+0.120}_{-0.080}$$ ^q	TESS	0.06 ± 0.05^q
WASP-100b	6900 ± 120^a	−0.03 ± 0.1^a	2102 ± 39	3.24 ± 0.14^a	5.389 ± 0.064^q	TESS	0.22 ± 0.08^q
WASP-121b	6460 ± 140^v	0.13 ± 0.09^v	2339 ± 51	2.970 ± 0.017^w	${3.815}_{- 0.032}^{+ 0.018}$ $Mathematical equation: $3.815^{+0.018}_{-0.032}$$ ^q	TESS	0.26 ± 0.06^q
HD209458b	6065 ± 50^a	0.00 ± 0.05^a	1445 ± 13	2.958 ± 0.013^a	8.807 ± 0.051^z	CHEOPS	0.096 ± 0.016^z
HD189733b	4969 ± 48^α	−0.08 ± 0.03^α	1179 ± 11	3.332 ± 0.026^a	8.8843 ± 0.0175^β	CHEOPS	0.076 ± 0.016^β

CoRoT-1b	6298 ± 66^a	0.06 ± 0.07^a	2039 ± 24	3.06 ± 0.07^b	4.92 ± 0.08^b	Corot	${0.064}_{- 0.139}^{+ 0.110}$ $Mathematical equation: $0.064^{+0.110}_{-0.139}$$ ^c,d
HAT-P-7b	6350 ± 80^a	0.26 ± 0.08^a	2264 ± 21	3.30 ± 0.09^g	${4.1545}_{- 0.0025}^{+ 0.0029}$ $Mathematical equation: $4.1545^{+0.0029}_{-0.0025}$$ ^g	TESS	${0.078}_{- 0.103}^{+ 0.102}$ $Mathematical equation: $0.078^{+0.102}_{-0.103}$$ ⁱ
Kepler-5b	6297 ± 60^a	0.04 ± 0.06^a	1763 ± 17	3.410 ± 0.034^a	${6.450}_{- 0.025}^{+ 0.021}$ $Mathematical equation: $6.450^{+0.021}_{-0.025}$$ ^g	Kepler	0.097 ± 0.037^g,l
Kepler-6b	5647 ± 44^a	0.34 ± 0.04^a	1461 ± 16	3.062 ± 0.018^a	7.503 ± 0.022^g	Kepler	0.059 ± 0.035^g,l
Kepler-8b	6210 ± 150^a	−0.055 ± 0.03^a	1669 ± 16	2.84 ± 0.12^a	${6.854}_{- 0.017}^{+ 0.018}$ $Mathematical equation: $6.854^{+0.018}_{-0.017}$$ ^g	Kepler	${0.109}_{- 0.052}^{+ 0.050}$ $Mathematical equation: $0.109^{+0.050}_{-0.052}$$ ^g,n
Kepler-12b	5950 ± 100^a	0.07 ± 0.04^a	1480 ± 15	2.572 ± 0.045^a	${8.019}_{- 0.013}^{+ 0.014}$ $Mathematical equation: $8.019^{+0.014}_{-0.013}$$ ^g	Kepler	0.084 ± 0.040^g,o
Kepler-43b	6050 ± 100^a	0.4 ± 0.1^a	1620 ± 27	3.766 ± 0.028^a	${6.975}_{- 0.047}^{+ 0.041}$ $Mathematical equation: $6.975^{+0.041}_{-0.047}$$ ^g	Kepler	0.036 ± 0.250^g,n
Kepler-76b	6409 ± 95^a	−0.1 ± 0.2^a	2145 ± 33	3.499 ± 0.082^a	${4.464}_{- 0.049}^{+ 0.041}$ $Mathematical equation: $4.464^{+0.041}_{-0.049}$$ ^g	Kepler	${0.148}_{- 0.025}^{+ 0.028}$ $Mathematical equation: $0.148^{+0.028}_{-0.025}$$ ^g,n
Kepler-91b	4550 ± 75^p	0.11 ± 0.07^p	2036 ± 38	3.0 ± 0.1^g	${2.496}_{- 0.050}^{+ 0.043}$ $Mathematical equation: $2.496^{+0.043}_{-0.050}$$ ^g	Kepler	${0.362}_{- 0.234}^{+ 0.250}$ $Mathematical equation: $0.362^{+0.250}_{-0.234}$$ ^g,n
Kepler-412b	5750 ± 90^a	0.27 ± 0.12^a	1848 ± 29	3.117 ± 0.043^a	${4.841}_{- 0.024}^{+ 0.023}$ $Mathematical equation: $4.841^{+0.023}_{-0.024}$$ ^g	Kepler	${0.066}_{- 0.042}^{+ 0.047}$ $Mathematical equation: $0.066^{+0.047}_{-0.042}$$ ^g,n
WASP-3b	6400 ± 100^a	0.0 ± 0.2^a	1947 ± 46	3.368 ± 0.039^a	5.40 ± 0.19ⁱ	TESS	${0.181}_{- 0.197}^{+ 0.190}$ $Mathematical equation: $0.181^{+0.190}_{-0.197}$$ ⁱ
WASP-5b	5770 ± 65^a	0.09 ± 0.04^a	1762 ± 41	3.455 ± 0.043^a	5.36 ± 0.22^q	TESS	${0.0002}_{- 0.174}^{+ 0.166}$ $Mathematical equation: $0.0002^{+0.166}_{-0.174}$$ ^q
WASP-18b	6400 ± 100^a	0.00 ± 0.09^a	2406 ± 40	4.323 ± 0.058^a	${3.539}_{- 0.035}^{+ 0.039}$ $Mathematical equation: $3.539^{+0.039}_{-0.035}$$ ^q	TESS	$- {0.038}_{- 0.070}^{+ 0.076}$ $Mathematical equation: $-0.038^{+0.076}_{-0.070}$$ ^q
WASP-78b	6100 ± 150^a	−0.35 ± 0.14^a	2219 ± 59	2.903 ± 0.064^a	${3.778}_{- 0.098}^{+ 0.060}$ $Mathematical equation: $3.778^{+0.060}_{-0.098}$$ ^q	TESS	${0.189}_{- 0.211}^{+ 0.207}$ $Mathematical equation: $0.189^{+0.207}_{-0.211}$$ ^q
WASP-189b	8000 ± 80^x	0.29 ± 0.13^x	2641 ± 28	3.27 ± 0.05^x	${4.587}_{- 0.034}^{+ 0.037}$ $Mathematical equation: $4.587^{+0.037}_{-0.034}$$ ^y	CHEOPS	${0.202}_{- 0.048}^{+ 0.046}$ $Mathematical equation: $0.202^{+0.046}_{-0.048}$$ ^n,y

Notes. Objects in the top half of the table have their albedos taken directly from previous analyses (where thermal decontamination has been carried out). For objects in the lower half, using measured eclipse depths and dayside temperatures from the references specified, we have calculated the thermally decontaminated geometric albedos (see method in Section 2.1). The ‘Band’ column details which bandpass the planet’s eclipse depth was measured in, and therefore which bandpass the geometric albedo corresponds to. T_eq refers to the equilibrium temperature of the planet, calculated from the other values in this table using Equation 6. ^(a)Bonomo et al. (2017), ^(b)Barge et al. (2008), ^(c)Deming et al. (2011), ^(d) Alonso et al. (2009), ^(e)Alonso et al. (2008), ^(f)Dang et al. (2018), ^(g)Esteves et al. (2015), ^(h)Morris et al. (2024), ⁽ⁱ⁾Wong et al. (2021), ^(j)Patel & Espinoza (2022), ^(k)Collins et al. (2017), ^(l)Désert et al. (2011), ^(m)Heng et al. (2021), ⁽ⁿ⁾Beatty et al. (2019), ^(o)Fortney et al. (2011), ^(p)Lillo-Box et al. (2014), ^(q)Wong et al. (2020), ^(r)Collier Cameron et al. (2010), ^(s)von Essen et al. (2020), ^(t)Turner et al. (2016), ^(u)Sousa et al. (2018), ^(v)Delrez et al. (2016), ^(w)Bourrier et al. (2020), ^(x)Lendl et al. (2020), ^(y)Deline et al. (2022), ^(z)Brandeker et al. (2022), ^(α)Sousa et al. (2021), ^(β)Krenn et al. (2023)

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