TOI-283 b: A transiting mini-Neptune in a 17.6-day orbit discovered with TESS and ESPRESSO

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Table 4

Derived P_rot values from the activity indices.

Activity index	P_rot [days]
FWHM	${30.0}_{- 4.1}^{+ 5.8}$ $\[30.0_{-4.1}^{+5.8}\]$
BIS	${27.4}_{- 16.9}^{+ 46.2}$ $\[27.4_{-16.9}^{+46.2}\]$
CONT	${22.3}_{- 19.1}^{+ 59.4}$ $\[22.3_{-19.1}^{+59.4}\]$
S index	${114.0}_{- 91.6}^{+ 27.0}$ $\[114.0_{-91.6}^{+27.0}\]$
Na	${98.2}_{- 70.7}^{+ 35.2}$ $\[98.2_{-70.7}^{+35.2}\]$
Hα	${31.2}_{- 11.1}^{+ 48.6}$ $\[31.2_{-11.1}^{+48.6}\]$
Ca	${115.0}_{- 74.8}^{+ 25.9}$ $\[115.0_{-74.8}^{+25.9}\]$

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