Table 4: Chromospheric index, Log R' $_{\rm HK}$ , and age for the EH stars not observed at the CASLEO.
Name $\langle$ Log R' $_{\rm HK}$ $\rangle$ D93 Age[Gy] RPM98 Age[Gy] Name $\langle$ Log R' $_{\rm HK}$ $\rangle$ D93 Age[Gy] RPM98 Age[Gy]

16 Cyg B -5.09 7.59 3.79 HD 80606 -5.09 7.63 1.73

47 Uma -5.02 6.03 3.2 HD 88133 -5.16 9.56 6.27

51 Peg -5.05 6.6 2.21 HD 89744 -5.11 8.09 2.55

55 Cnc -5.00 5.5 1.21 HD 93083 -5.02 6 3.86

70 Vir -5.07 7.09 5.52 HD 99492 -4.94 4.49 2.93

BD-103166 -4.92 4.18 0.53 HD 101930 -4.99 5.39 3.48

$\epsilon$ Eri -4.46 0.66 0.82 HD 102117 -5.03 6.21 2.99

$\gamma$ Cephei -5.32 14.78 6.39 HD 104985 -5.58 25.35 27.08

GJ 436 -5.21 11.05 7.41 HD 106252 -4.97 5.02 3.36

GJ 876 -5.17 9.9 6.52 HD 108874 -5.08 7.26 2.21

GJ 777A -5.07 7.09 2.08 HD 111232 -4.98 5.2 9.65

HD 3651 -4.98 5.13 2.25 HD 117618 -4.90 3.88 2.72

HD 4203 -5.16 9.41 1.66 HD 128311 -4.40 0.39 0.41

HD 8574 -5.07 7.13 3.79 HD 136118 -4.93 4.26 3.16

HD 8673 -4.71 1.95 0.01 HD 145675 -5.09 7.6 1.20

HD 10697 -5.12 8.48 3.49 HD 150706 -4.57 1.17 0.83

HD 11964 -5.16 9.56 6.27 HD 154857 -5.14 8.98 14.29

HD 12661 -5.07 7.05 1.39 HD 177830 -5.35 15.89 4.03

HD 16141 -5.09 7.76 3.08 HD 178911 B -4.98 5.2 1.54

HD 20367 -4.50 0.87 0.37 HD 187123 -4.99 5.33 2.26

HD 23596 -5.06 6.89 1.61 HD 190228 -5.18 10.16 14.29

HD 37124 -4.86 3.33 6.68 HD 192263 -4.44 0.57 0.55

HD 40979 -4.63 1.48 0.51 HD 195019 -4.99 5.33 2.58

HD 41004A -4.66 1.64 1.48 HD 196050 -4.85 3.17 1.03

HD 45350 -5.00 5.59 1.94 HD 208487 -4.90 3.88 4.06

HD 46375 -4.97 4.96 1.68 HD 209458 -4.95 4.72 2.88

HD 49674 -4.77 2.38 0.55 HD 216770 -4.88 3.6 1.02

HD 50554 -4.95 4.58 2.89 HD 219449 -5.47 20.76 18.24

HD 50499 -5.02 6 1.82 HD 330075 -5.03 6.21 3.09

HD 68988 -5.06 6.78 1.34 $\rho$ Crb -5.06 6.94 8.48

HD 70642 -4.90 3.88 1.42 $\tau$ Boo -4.78 2.52 0.80

HD 73256 -4.49 0.83 0.26 TrES-1 -4.77 2.41 1.63

HD 74156 -5.08 7.38 2.83 $\upsilon$ And -4.99 5.32 2.26

**Table 4:** Chromospheric index, Log R' $_{\rm HK}$ , and age for the EH stars not observed at the CASLEO.
Name	$\langle$ Log R' $_{\rm HK}$ $\rangle$	D93 Age[Gy]	RPM98 Age[Gy]	Name	$\langle$ Log R' $_{\rm HK}$ $\rangle$	D93 Age[Gy]	RPM98 Age[Gy]
16 Cyg B	-5.09	7.59	3.79	HD 80606	-5.09	7.63	1.73
47 Uma	-5.02	6.03	3.2	HD 88133	-5.16	9.56	6.27
51 Peg	-5.05	6.6	2.21	HD 89744	-5.11	8.09	2.55
55 Cnc	-5.00	5.5	1.21	HD 93083	-5.02	6	3.86
70 Vir	-5.07	7.09	5.52	HD 99492	-4.94	4.49	2.93
BD-103166	-4.92	4.18	0.53	HD 101930	-4.99	5.39	3.48
$\epsilon$ Eri	-4.46	0.66	0.82	HD 102117	-5.03	6.21	2.99
$\gamma$ Cephei	-5.32	14.78	6.39	HD 104985	-5.58	25.35	27.08
GJ 436	-5.21	11.05	7.41	HD 106252	-4.97	5.02	3.36
GJ 876	-5.17	9.9	6.52	HD 108874	-5.08	7.26	2.21
GJ 777A	-5.07	7.09	2.08	HD 111232	-4.98	5.2	9.65
HD 3651	-4.98	5.13	2.25	HD 117618	-4.90	3.88	2.72
HD 4203	-5.16	9.41	1.66	HD 128311	-4.40	0.39	0.41
HD 8574	-5.07	7.13	3.79	HD 136118	-4.93	4.26	3.16
HD 8673	-4.71	1.95	0.01	HD 145675	-5.09	7.6	1.20
HD 10697	-5.12	8.48	3.49	HD 150706	-4.57	1.17	0.83
HD 11964	-5.16	9.56	6.27	HD 154857	-5.14	8.98	14.29
HD 12661	-5.07	7.05	1.39	HD 177830	-5.35	15.89	4.03
HD 16141	-5.09	7.76	3.08	HD 178911 B	-4.98	5.2	1.54
HD 20367	-4.50	0.87	0.37	HD 187123	-4.99	5.33	2.26
HD 23596	-5.06	6.89	1.61	HD 190228	-5.18	10.16	14.29
HD 37124	-4.86	3.33	6.68	HD 192263	-4.44	0.57	0.55
HD 40979	-4.63	1.48	0.51	HD 195019	-4.99	5.33	2.58
HD 41004A	-4.66	1.64	1.48	HD 196050	-4.85	3.17	1.03
HD 45350	-5.00	5.59	1.94	HD 208487	-4.90	3.88	4.06
HD 46375	-4.97	4.96	1.68	HD 209458	-4.95	4.72	2.88
HD 49674	-4.77	2.38	0.55	HD 216770	-4.88	3.6	1.02
HD 50554	-4.95	4.58	2.89	HD 219449	-5.47	20.76	18.24
HD 50499	-5.02	6	1.82	HD 330075	-5.03	6.21	3.09
HD 68988	-5.06	6.78	1.34	$\rho$ Crb	-5.06	6.94	8.48
HD 70642	-4.90	3.88	1.42	$\tau$ Boo	-4.78	2.52	0.80
HD 73256	-4.49	0.83	0.26	TrES-1	-4.77	2.41	1.63
HD 74156	-5.08	7.38	2.83	$\upsilon$ And	-4.99	5.32	2.26

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations and data reduction
	3 Age derivation from the chromospheric activity
	4 Derivation of ages for the EH stars applying other methods
	5 Comparison with the Solar Neighborhood stellar ages
	6 Correlations of the stellar properties with age
	7 Summary
	References
	Online Material