Elemental abundance pattern and temperature inversion on the dayside of HAT-P-70b observed with CARMENES and PEPSI

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Volume 706 (February 2026)

A&A, 706 (2026) A126

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Table 2

Parameters of the HAT-P-70 system.

Parameter (Unit)	Value ^(a)
The star
Radius R_* (R_⊙)	${1.858}_{- 0.091}^{+ 0.119}$ $1.858_{-0.091}^{+0.119}$
Mass M_* (M_⊙)	${1.890}_{- 0.013}^{+ 0.010}$ $1.890_{-0.013}^{+0.010}$
Magnitude V (mag)	9.470 ± 0.004
Effective temperature T_eff(K)	$8450_{- 690}^{+ 540}$ $8450_{-690}^{+540}$
Systemic velocity v_sys(km s⁻¹)	25.26 ± 0.11
Rotational velocity v sin i_*(km s⁻¹)	${99.85}_{- 0.61}^{+ 0.64}$ $99.85_{-0.61}^{+0.64}$
Metallicity [Fe/H]	$- {0.059}_{- 0.088}^{+ 0.075}$ $-0.059_{-0.088}^{+0.075}$

The planet
Radius R_p(R_Jup)	${1.87}_{- 0.10}^{+ 0.15}$ $1.87_{-0.10}^{+0.15}$
Mass M_p(M_Jup)	< 6.78 (3 σ)
Surface gravity log g (log cgs)	< 3.73 (3 σ)
Equilibrium temperature T_eq(K)^(b)	$2562_{- 52}^{+ 43}$ $2562_{-52}^{+43}$
Inclination i_p (deg)	${96.50}_{- 0.91}^{+ 1.42}$ $96.50_{-0.91}^{+1.42}$
Orbital period P (d)	${2.74432452}_{- 0.00000068}^{+ 0.0000079}$ $2.74432452_{-0.00000068}^{+0.0000079}$
Transit epoch T₀ (BJD-TDB)	${2458439.57519}_{- 0.00037}^{+ 0.00045}$ $2458439.57519_{-0.00037}^{+0.00045}$
Transit duration T₁₄(h)	${3.480}_{- 0.048}^{+ 0.067}$ $3.480_{-0.048}^{+0.067}$
RV semi-amplitude K_p(km s⁻¹)	${186.82}_{- 0.43}^{+ 0.33}$ $186.82_{-0.43}^{+0.33}$

Notes. ^(a) All parameters except K_p, which was calculated by Eq. (2), were adopted from Zhou et al. (2019). ^(b) T_eq calculated assuming 0 Bond albedo and full heat redistribution.

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