The GAPS Programme at TNG - LIX. Characterisation study of the ∼300 Myr-old multi-planetary system orbiting the star BD+40 2790 (TOI-2076)

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Volume 690 (October 2024)

A&A, 690 (2024) A235

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Table 2

Stellar parameters of BD+40 2790 (TOI-2076).

Parameter	Value	Ref
α (J2000)	14:29:34.24	(Gaia Collaboration 2016, 2021)
δ (J2000)	+39:47:25.54	(Gaia Collaboration 2016, 2021)
µ_α (mas/yr)	−118.071 ±0.010	(Gaia Collaboration 2016, 2021)
µ_δ (mas/yr)	−6.860±0.013	(Gaia Collaboration 2016, 2021)
π (mas)	23.8052 ± 0.0125	(Gaia Collaboration 2016, 2021, 2023)
B_T (mag)	10.258 ± 0.025	(Høg et al. 2000)
V_T (mag)	9.238 ± 0.015	(Høg et al. 2000)
G (mag)	8.918 ± 0.003	(Gaia Collaboration 2016, 2021, 2023)
Gaia BP	9.349±0.003	(Gaia Collaboration 2016, 2021, 2023)
Gaia RP	8.319±0.004	(Gaia Collaboration 2016, 2021, 2023)
J_2MASS (mag)	7.613 ± 0.019	(Cutri et al. 2003)
H_2MASS (mag)	7.188 ± 0.027	(Cutri et al. 2003)
K_2MASS (mag)	7.115 ± 0.017	(Cutri et al. 2003)
WISE1 (mag)	7.011 ± 0.050	(Cutri et al. 2021)
WISE2 (mag)	7.126 ± 0.019	(Cutri et al. 2021)
WISE3 (mag)	7.092 ± 0.016	(Cutri et al. 2021)
WISE4 (mag)	7.003 ± 0.089	(Cutri et al. 2021)
T_eff (K)	5200±100	This paper
		(spectroscopic; adopted)
T_eff (K)	5180±45	This paper (photometric)
log 𝑔	4.52±0.05	This paper
[Fe/H] (dex)	−0.03±0.06	This paper
E(B-V)	0.003±0.015	PIC (Montalto et al. 2021)
S_MW	0.548 ± 0.027	This paper (HARPS-N spectra)
log R′_HK	−4.354 ± 0.025	This paper (HARPS-N spectra)
υ sin i_⋆ (km/s)	5.2±0.4	This paper
L_bol (L_⊙)	0.383 ± 0.013	This paper
P_rot,⋆ (d)	7.31±0.03	This paper
L_X (erg/cm²)	${5.6}_{- 1.0}^{+ 2.5} \times 10^{28}$ $5.6_{ - 1.0}^{ + 2.5} \times {10^{28}}$	This paper
log L_x/L_bol	$- {4.42}_{- 0.09}^{+ 0.16}$ $- 4.42_{ - 0.09}^{ + 0.16}$	This paper
A(Li)	2.11±0.10	This paper
Mass (M_⊙)	${0.849}_{- 0.026}^{+ 0.027}$ $0.849_{ - 0.026}^{ + 0.027}$	This paper
Radius (R_⊙)	0.758 ± 0.014	This paper
Density (gcm⁻³)	${2.74}_{- 0.14}^{+ 0.15}$ $2.74_{ - 0.14}^{ + 0.15}$	This paper
Age (Myr)	300 ± 80	Nardiello et al. (2022)

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