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Table 1

Stellar parameters derived for the V-LoTSS M dwarf sample, with targets grouped according to the designations in Table 2 and then ordered according to spectral type.

Target Sp Type Teff (K) log g [Fe/H] v sin i (km/s) Prot (d) R (R) i
GJ 625 M2.5 ± 0.4 3475 4.90 −0.49 <2α 80 ± 8a 0.338 ± 0.010
GJ 1151 M5.2 ± 0.5 3140 5.07 0.01 <2α 125 ± 13a 0.202 ± 0.006
LHS 2395 M7.0 ± 0.7 2869 5.14 −0.12 <2α 0.140 ± 0.004

GJ 450 M1.7 ± 0.1 3581 4.77 −0.14 <2α 23 ± 2.3a 0.461 ± 0.013
AD Leo M2.8 ± 0.5 3242 4.89 −0.15 2.7 ± 0.7 β 2.2399 ± 0.0006c 0.427 ± 0.012 184+4$\[18_{-4}^{+4}\]$
GJ 3647 M3.5 ± 0.4 3187 4.92 −0.19 4.1 ± 1.0 β 7.77 ± 0.8a 0.326 ± 0.009 7418+11$\[74_{-18}^{+11}\]$
NLTT 20858 M5.5 ± 0.6 3080 5.05 −0.22 6.9 ± 0.8β 1.7 ± 0.17a 0.182 ± 0.005 7911+8$\[79_{-11}^{+8}\]$
NLTT 24199 M5.6 ± 0.6 3033 5.05 0.14 <2α 61 ± 6a 0.225 ± 0.006
2 M J1431,2 M5.9 ± 1.1 2884 ± 157 4.934 ± 0.007 71 ± 7γ 0.14 ± 0.014a 0.289 ± 0.008 456+9$\[45_{-6}^{+9}\]$
2M J0941 M6.1 ± 0.6 3063 5.05 −0.17 2.4 ± 0.7β 31 ± 3b 0.195 ± 0.006 6724+16$\[67_{-24}^{+16}\]$

GJ 860 B M3.7 ± 2.1 3289 5.04 −0.41 <2α 0.41 ± 0.04a 0.326 ± 0.009 3.61.1+1.3$\[3.6_{-1.1}^{+1.3}\]$
LSPM J1021 M4.3 ± 0.4 3184 4.97 0.01 4.3 ± 1.0β 2.1 ± 0.2b 0.276 ± 0.008 4510+14$\[45_{-10}^{+14}\]$
GJ 412 B M7.2 ± 0.7 2867 5.16 0.07 7.9 ± 1.8β 0.78 ± 0.08a 0.128 ± 0.004 6918+15$\[69_{-18}^{+15}\]$

GJ 9552 M0.8 ± 1.0 1.98 ± 0.2a
GJ 3861 M2.3 ± 0.4 12 ± 1.2b
GJ 3729 M3.2 ± 0.7 13.58 ± 1.4d
GJ 3789 M3.2 ± 1.2 0.11 ± 0.01a
2M J1051,3 M3.2 ± 0.8 3195 4.90 −0.12 5.5 ± 0.8β
G 240-453 M4.0e 3177 5.06 −0.19 <2α

Notes. Rotation periods are adopted from Pope et al. (2021) unless otherwise noted. All other values are from this work unless otherwise noted. The cross-validation uncertainties for the stellar effective temperature, log g, and the metallicity are σTeff = 59 K, σlog g = 0.04, and σFe/H = 0.16. The method used to derive v sin i is annotated, where α is a result from HPF-SpecMatch, β is obtained through the CCF method and γ is obtained from the broadening function. References are annotated with letters a-d. (1)Targets shortened for space: 2MASS J09481615+5114518 (2M J094), 2MASS J14333139+3417472 (2M J143), LSPM J1024+3902E (LSPM J102), and 2MASS J10534129+5253040 (2M J105). (2)The highly broadened lines of target 2MASS J14333139+3417472 makes it difficult for HPF-SpecMatch to find matching spectra, and thus produces highly uncertain results. Therefore, we here show the stellar properties listed in the Tess Input Catalog. (3)G 240-45 and 2MASS J10534129+5253040 are likely binaries, but do not show obvious double lines and so we report the HPF-SpecMatch results here. We suggest caution in interpreting these results. a Pope et al. (2021), b This work, c Morin et al. (2008), d Newton et al. (2017), e Callingham et al. (2021b).

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