TESS discovery of two super-Earths orbiting the M-dwarf stars TOI-6002 and TOI-5713 near the radius valley

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Volume 690 (October 2024)

A&A, 690 (2024) A263

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Table 3

Stellar parameters. Parameters in bold are the adopted stellar values in the analyses.

Parameter	TOI-6002	TOI-5713	Source
Sp. Type	M3.5±0.5	M3.5±0.5	IRTF/SpeX^(a)
	M4±0.5	M4±0.5	Shane/Kast^(a)

T_eff/K	$324 1_{- 60}^{+ 80}$ ${\bf{3241}}_{ - 60}^{ + 80}$	3228±41	Joint fit^(b)
	3477±100	3277±100	Mann et al. (2015)
	3314±80	3300±80	Stefan-Boltzmann

[Fe/H]	−0.18 ± 0.12	−0.03 ± 0.13	IRTF/SpeX^(c)
	+0.04 ± 0.20	+0.08 ± 0.20	Shane/Kast^(d)

M_★/M_⊙	$0.2409 +_{- 0.0065}^{+ 0.0066}$ ${\bf{0}}.{\bf{2409}} + _{ - 0.0065}^{ + 0.0066}$	0.2654±0.0061	Joint fit^(b)

R_★/R_⊙	$0.210 5_{- 0.0048}^{+ 0.0049}$ ${\bf{0}}.{\bf{2105}}_{ - 0.0048}^{ + 0.0049}$	$0.298 5_{- 0.0073}^{+ 0.0074}$ ${\bf{0}}.{\bf{2985}}_{ - 0.0073}^{ + 0.0074}$	Joint fit^(b)

L_★.10⁻³/L_⊙	$5.8 0_{- 0.38}^{+ 0.51}$ ${\bf{5}}.{\bf{80}}_{ - 0.38}^{ + 0.51}$	$8.7 3_{- 0.29}^{+ 0.27}$ ${\bf{8}}.{\bf{73}}_{ - 0.29}^{ + 0.27}$	Joint fit^(b)
	6.39126±0.5621	9.1564±0.8340	BC_K (Mann et al. 2015)

log 𝑔_★/dex	4.998±0.025	4.912±0.023	Joint fit^(b)

ρ_★/g cm⁻³	$21 . 2_{- 1.7}^{+ 1.9}$ $21.2_{ - 1.7}^{ + 1.9}$	$14 . 1_{- 1.0}^{+ 1.1}$ ${{\bf{14}}.{\bf{1}}_{ - {\rm{1}}{\rm{.0 }}}^{ + 1.1}}$	Joint fit^(b)
	${23.4}_{- 3.2}^{+ 1.4}$ $23.4_{ - 3.2}^{ + 1.4}$	${11.4}_{- 6}^{+ 7}$ ${11.4_{ - 6}^{ + 7}}$	Transits fit alone

Age/Gyr	≳4.5	≲4.5	Hα emission
	≲8.2	≲8.2	Kinematics
	>2.19 ± 0.10	<1.81 ± 0.10	Mass–spindown relation (Pass et al. 2024)

Notes. ^(a)Classification based on spectral templates from Bochanski et al. (2007) and spectral type/index relations from Reid et al. (1995), Martín et al. (1999), Lépine et al. (2003) and Riddick et al. (2007). ^(b)A joint fit of the spectral energy distribution (SED) and transits with the use of Mann et al. (2015) and Mann et al. (2019) empirical relations (see Sect. 3.1.2 and 3.6). ^(c)Metallicity based on measurement of K-band Na I and Ca I doublets and the H2O–K2 index (Rojas-Ayala et al. 2012), and the calibrations of Mann et al. (2014). ^(d)Metallicity based on measurement of the ζ index Lépine et al. (2007); Mann et al. (2013) and calibrations from Mann et al. (2013).

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