**Table 1:** Stellar properties of the selected sample of Lindroos PTTSs.
HD	Sp. type¹	Distance²	Sep.³	V⁴	$A_{\rm v}$ ⁵	$\log~L_{\rm X}$ ⁶	Mass⁷	Age⁸
		(pc)	(AU)	(mag)	(mag)	(erg/s)	( $M_{\rm\odot}$ )	Myr
560 B	G5 + B9	100 $\pm$ 9	770	10.37	0.00	30.56	0.95	20/30/36/30
17543 B	F8 + B6	187 $\pm$ 37	4625	10.73	0.21	30.17	1.18	24/28/-/25
23793 B	F3 + B3	173 $\pm$ 31	1557	9.41	0.08	30.25	-	<28^*
27638 B	G2 + B9	82 $\pm$ 8	1558	8.43	0.00	<28.49	1.25	12/15/19/15
33802 B	G8 + B8	74 $\pm$ 4	940	9.92	0.01	30.03	0.90	25/50/47/37
38622 C	G2 + B2	245 $\pm$ 54	6125	12.01	0.04	29.99	1.05	30/100/-/110
40494 B	G8 + B3	263 $\pm$ 38	8889	12.66	0.00	<28.57	0.94	35/100/-/76
53191 B	G3 + A0	207 $\pm$ 25	3519	11.75	0.05	29.53	1.00	30/80/-/39
60102 B	G8 + B9.5	206 $\pm$ 25	3378	11.86	0.22	30.62	1.00	15/25/-/20
86388 B	F5 + B9	177 $\pm$ 21	1628	9.98	0.02	29.42	1.28	-/30/-/110
90972 B	F9 + B9.5	147 $\pm$ 16	1617	9.65	0.03	30.11	1.25	14/18/18/15
108767 B	K2 + B9	27 $\pm$ 9	648	8.43	0.00	28.95	0.8	40/90/-/93
109573 B⁺	M2.5 + A0	67 $\pm$ 3	509	13.3	0.00	29.75	0.3	10
113703 B	K0 + B4	127 $\pm$ 12	1448	10.8	0.00	30.22	0.98	15/25/19/23
113791 B	F7 + B2	126 $\pm$ 13	3163	9.38	0.00	29.98	1.22	18/22/11/21
127304 B	K1 + A0	106 $\pm$ 8	2734	11.37	0.04	<28.73	0.84	50/100/-/100
129791 B	K5 + B9.5	129 $\pm$ 16	4554	12.93	0.26	29.82	-	39^*
143939 B	K3 + B9	167 $\pm$ 27	1436	11.80	0.00	30.52	1.15	2.5/7/8.3/6

Notes: 1. Adopted from Pallavicini et al. (1992). The spectral type of the early-type primary star is also provided; 2. deduced from Hipparcos parallax of the primary star; 3. separation between the stars of the Lindroos binary system using Hipparcos parallax; 4. adopted from Pallavicini et al. (1992); 5. adopted from L86; 6. adopted from Huélamo et al. (2000); 7. masses estimated adopted from Gerbaldi et al. (2001) using Palla & Stahler (1999) evolutionary tracks; 8. ages adopted from Gerbaldi at al. (2001). The four entries correspond to the ages computed with D'Antona & Mazzitelli (1998), Palla & Stahler (1999), Siess et al. (2000) and Tout et al. (1999) evolutionary tracks, respectively; ⁺ data from Webb et al. (1999); ^* ages adopted from L86; - data not available.

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