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Table 7

Dispersion of astrometric residuals, ages, masses, radii, surface gravities, explored periods, and minimum masses of astrometric companions.

Object SpT Δ(dα) Age rangea Mass rangeb R/R log gc Periodsd Mce
(mas) (Myr) (MJup) (cm s-2) (d) (MJup)

J00331521f L4β 7.4 10 <4–12 (4) 0.19±0.05 76–1095
J0045+1634 L2β 8.8 10–100 12–25 (15) 0.15±0.02 4.05–4.66 (4.28) 59–1095 5.6
J02410326 L0γ 9.5 500 60 (80) 0.09±0.02 5.12 (5.45) 97–1095 56.9
J0355+1133 L5γ 6.4 50–500 15–40 (23) 0.11±0.02 4.37–5.07 (4.68) 66–1095 2.4
J05010010 L4γ 5.2 50–500 13–45 (25) 0.11±0.02 4.27–5.19 (4.73) 76–1095 4.7
G 196–3B L3β 13.9 10–300 11–45 (15) 0.13±0.03 4.04–5.07 (4.36) 46–1095 15.0
J1022+5825 L1β 9.6 100–1000 35–72 (50) 0.11±0.02 4.76–5.36 (5.05) 41–1095 16.4
J1552+2948 L0β 8.9 500 65 (75) 0.10±0.01 5.13 (5.32) 38–1095 18.5
J1726+1538 L3β 10.4 10–300 11–45 (20) 0.13±0.03 4.07–5.12 (4.52) 38–1095 10.0
J2208+2921 L3γ 6.1 10–300 11–45 (15) 0.14±0.03 4.05–4.99 (4.34) 46–1095 12.7

Notes.

(a)

Derived from the luminosity-Teff plane. All objects are assumed to be single.

(b)

Most likely mass value from the luminosity-Teff plane is given in parenthesis. All objects are assumed to be single.

(c)

Value computed for the most likely mass is given in parenthesis.

(d)

Range of periods explored in the time-series analysis of the monthly astrometric residuals.

(e)

Minimum detectable companion masses (see Sect. 5.5).

(f)

The lack of lithium in its atmosphere is not consistent with such young age and low mass (see Sect. 5.3). Surface gravity and minimum detectable companion masses are not computed for this object.

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