DREAM - I. Orbital architecture orrery | Astronomy & Astrophysics (A&A)

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Volume 669 (January 2023)

A&A, 669 (2023) A63

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Table C.5

Properties of the HD 89345 system

Parameter	Symbol	Value	Unit	Origin
Stellar parameters

Spectral type		G5		Cannon & Pickering (1993)
Stellar temperature	T_eff	5499 ± 73	K	Van Eylen et al. (2018)
Stellar radius	R_*	${1.657}_{- 0.004}^{+ 0.020}$ $1.657_{ - 0.004}^{ + 0.020}$	R_⊙	Van Eylen et al. (2018)
Stellar spin inclination	i_*	> 44^†	deg	Van Eylen et al. (2018)
Stellar equatorial period	P_eq	—	d	—
Stellar projected velocity	v_eq sin i_*	0.58 ± 0.28	km s⁻¹	This work
Age	τ	${9.4}_{- 1.3}^{+ 0.4}$ $9.4_{ - 1.3}^{ + 0.4}$	Gyr	Van Eylen et al. (2018)
Limb-darkening coefficients	u₁	0.535		Exofast
	u₂	0.215

Planet b parameters

Orbital period	P	11.8144024 ± 0.0000066	d	This work (TESS + K2)
Transit epoch	T₀	2458740.81147 ± 0.00044	BJD_tdb	This work (TESS + K2)
Eccentricity	e	0.208 ± 0.039		This work
Argument of periastron	ω	21.7 ± 19.1		This work
Stellar reflex velocity	K	9.1 ± 0.5		This work
Scaled separation	a/R_*	13.625 ± 0.027		Van Eylen et al. (2018)
Orbital inclination	i	87.68 ± 0.10	deg	This work (TESS + K2)
Impact parameter	b	0.564 ± 0.017		This work (TESS + K2)
Transit duration	T₁₄	5.65 ± 0.02	h	This work (TESS + K2)
Planet-to-star radius ratio	R_p/R_*	0.03696 ± 0.00041		This work (TESS + K2)
Projected spin-orbit angle	λ	${74.2}_{- 32.5}^{+ 33.6}$ $74.2_{ - 32.5}^{ + 33.6}$	deg	This work
3D spin-orbit angle	ψ_N	${78.7}_{- 23.0}^{+ 22.5}$ $78.7_{ - 23.0}^{ + 22.5}$	deg	This work
	ψ_S	${81.6}_{- 23.2}^{+ 22.2}$ $81.6_{ - 23.2}^{ + 22.2}$	deg
	ψ	${80.1}_{- 23.1}^{+ 22.3}$ $80.1_{ - 23.1}^{ + 22.3}$	deg

Notes:^† Instead of using this lower limit we reproduced the PDF on i_* from Van Eylen et al. (2018) to calculate the PDF on ψ from our results.

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