The GAPS Programme at TNG - LXXIII. Confirmation of the hot sub-Neptune TOI-4602 b (HD 25295 b), a key target for future atmospheric characterization

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Volume 709 (May 2026)

A&A, 709 (2026) A270

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Table A.1

HARPS-N time series of TOI-4602.

BJD - 2450000	RV (m s⁻¹)	BIS-SPAN (m s⁻¹)	$\begin{matrix} \log R_{HK}^{'} \\ ({m s}^{- 1}) \end{matrix}$ $Mathematical equation: $\matrix{ {\log {\rm{R}}_{{\rm{HK}}}^'} \cr {\left( {{\rm{m}}{{\rm{s}}^{ - 1}}} \right)} \cr }$$	Hα
10592.70	-48511.6 ± 0.7	5.6	-4.964 ± 0.003	0.1779 ± 0.0002
10594.73	-48505.2 ± 0.6	5.7	-4.965 ± 0.003	0.1778 ± 0.0002
10596.73	-48510.4 ± 1.1	3	-4.963 ± 0.007	0.1784 ± 0.0003
10600.77	-48510.4 ± 0.8	5.5	-4.962 ± 0.004	0.1796 ± 0.0002
10607.77	-48511.2 ± 1.0	4	-4.976 ± 0.007	0.1791 ± 0.0002
10612.74	-48507.0 ± 1.0	9	-4.975 ± 0.006	0.1789 ± 0.0002
10613.70	-48507.1 ± 0.8	9	-4.984 ± 0.006	0.1793 ± 0.0003
10617.65	-48506.0 ± 0.8	7	-4.971 ± 0.005	0.1789 ± 0.0002
10618.73	-48507.7 ± 0.8	5	-4.976 ± 0.005	0.1783 ± 0.0002
10619.68	-48510.3 ± 0.6	9.9	-4.970 ± 0.003	0.1786 ± 0.0002
10620.68	-48511.6 ± 1.1	6	-4.985 ± 0.008	0.1788 ± 0.0003
10625.63	-48506.8 ± 1.2	8	-4.974 ± 0.009	0.1790 ± 0.0004
10643.59	-48514 ± 2	13	-4.97 ± 0.02	0.1785 ± 0.0005
10652.60	-48509.3 ± 0.7	3.4	-4.967 ± 0.004	0.1781 ± 0.0002
10655.47	-48511.8 ± 0.9	6	-4.956 ± 0.005	0.1788 ± 0.0003
10656.42	-48510.8 ± 0.8	1.7	-4.972 ± 0.005	0.1785 ± 0.0002
10671.55	-48514.1 ± 0.8	8	-4.948 ± 0.005	0.1788 ± 0.0002
10674.57	-48508.5 ± 1.1	8	-4.950 ± 0.008	0.1793 ± 0.0003
10675.53	-48512.9 ± 1.5	17	-4.968 ± 0.013	0.1783 ± 0.0004
10682.52	-48506.3 ± 0.8	11.6	-4.940 ± 0.004	0.1788 ± 0.0002
10683.45	-48512.0 ± 1.1	6	-4.954 ± 0.007	0.1789 ± 0.0003
10687.54	-48510.8 ± 1.2	1	-4.951 ± 0.009	0.1793 ± 0.0003
10687.55	-48511.5 ± 1.5	12	-4.942 ± 0.012	0.1788 ± 0.0004
10688.56	-48507.3 ± 1.1	2	-4.949 ± 0.007	0.1786 ± 0.0003
10691.57	-48510.8 ± 1.0	5	-4.935 ± 0.007	0.1787 ± 0.0003
10692.59	-48507.0 ± 1.0	3	-4.944 ± 0.007	0.1785 ± 0.0003
10693.58	-48506.8 ± 1.4	5	-4.956 ± 0.012	0.1789 ± 0.0003
10695.48	-48512.5 ± 0.9	7	-4.952 ± 0.005	0.1793 ± 0.0003
10701.50	-48504.9 ± 0.7	8.0	-4.944 ± 0.004	0.1786 ± 0.0002
10703.50	-48508.7 ± 0.8	6	-4.938 ± 0.005	0.1777 ± 0.0002
10704.48	-48510.0 ± 0.8	8	-4.947 ± 0.005	0.1781 ± 0.0002
10715.40	-48509.7 ± 0.7	3.7	-4.954 ± 0.004	0.1786 ± 0.0002
10717.49	-48507.7 ± 0.8	3	-4.921 ± 0.004	0.1784 ± 0.0002
10718.42	-48507.8 ± 0.8	7.2	-4.941 ± 0.004	0.1786 ± 0.0002
10719.47	-48512.6 ± 0.9	5	-4.941 ± 0.006	0.1786 ± 0.0003
10720.44	-48509.0 ± 0.9	9	-4.938 ± 0.006	0.1785 ± 0.0003
10721.48	-48502.4 ± 1.1	3	-4.926 ± 0.008	0.1796 ± 0.0003
10723.37	-48507.8 ± 0.8	9.9	-4.944 ± 0.004	0.1788 ± 0.0003
10725.41	-48507.3 ± 1.3	3	-4.954 ± 0.010	0.1793 ± 0.0004
10730.40	-48507.8 ± 0.7	9.8	-4.953 ± 0.004	0.1792 ± 0.0002
10731.42	-48509.7 ± 1.1	4	-4.951 ± 0.007	0.1781 ± 0.0003
10732.39	-48509.6 ± 1.4	9	-4.946 ± 0.011	0.1793 ± 0.0004
10749.36	-48505.9 ± 0.8	9.2	-4.940 ± 0.004	0.1789 ± 0.0002
10753.34	-48509.4 ± 1.1	12	-4.945 ± 0.008	0.1777 ± 0.0003

Notes. The log $R_{HK}^{'}$ $Mathematical equation: $R_{HK}^'$$ index was computed using YABI workflow implementation, while the Hα activity index was extracted using the ACTIN 2 code.

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