Lithium abundances and extra mixing processes in evolved stars of M 67

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Table 1

Log of the spectroscopic observations of our 28 sample stars.

Sanders	V	(B − V)	α ₂₀₀₀	δ₂₀₀₀	Julian day	Exposure	v_rad
ID					+2 453 000	time (s)	(km s^-1)

S774	12.93	0.85	08:50:49.93	11:49:12.90	009.74	3000	33.5
					011.77	1500	34.2
					031.76	3000	34.0
					032.76	3000	33.6
					033.64	3000	34.0
S806	12.78	0.81	08:51:00.17	11:54:32.10	009.74	3000	33.4
					011.77	1500	34.3
					031.76	3000	34.0
					032.76	3000	33.6
					033.64	3000	34.0
S978	9.72	1.37	08:51:17.48	11:45:22.70	008.77	1500	34.7
					008.79	1500	34.6
S1000^*	12.84	0.78	08:51:23.83	11:47:16.20	382.73	2580	42.8
					382.76	2580	42.9
S1010	10.48	1.11	08:51:22.81	11:48:01.80	008.77	1500	34.1
					008.79	1500	33.8
S1016	10.3	1.26	08:51:17.11	11:48:16.30	008.77	1500	34.6
					008.79	1500	34.4
S1034	12.65	0.61	08:51:18.55	11:49:21.70	028.74	3000	34.6
					028.78	3000	34.6
					033.69	3000	34.8
					033.73	3000	34.9
S1074	10.59	1.12	08:51:12.68	11:52:42.20	007.76	1500	34.2
					007.78	1500	34.7
S1231	12.93	0.92	08:51:29.38	11:45:27.80	009.74	3000	32.9
					011.77	1500	33.6
					031.76	3000	33.5
					032.76	3000	33.1
					033.64	3000	33.5
S1239	12.75	0.76	08:51:44.03	11:46:24.60	028.74	3000	32.8
					028.78	3000	32.9
					033.69	3000	33.2
					033.73	3000	33.2
S1242	12.72	0.68	08:51:36.04	11:46:33.70	009.74	3000	37.5
					011.77	1500	38.4
					031.76	3000	34.1
					032.76	3000	34.4
					033.64	3000	35.1
S1245	12.93	0.92	08:51:44.77	11:46:46.20	028.74	3000	33.1
					028.78	3000	33.1
					033.69	3000	33.3
					033.73	3000	33.4
S1254	11.52	1.05	08:51:45.08	11:47:46.00	007.76	1500	32.9
					007.78	1500	33.5
S1268	12.65	0.58	08:51:49.97	11:49:31.40	009.74	3000	32.7
					011.77	1500	33.4
					031.76	3000	33.2
					032.76	3000	32.9
					033.64	3000	33.3
S1273	12.22	0.57	08:51:39.26	11:50:04.00	028.74	3000	34.6
					028.78	3000	34.6
					033.69	3000	34.7
					033.73	3000	34.8
S1275	12.56	0.59	08:51:37.43	11:50:05.40	009.74	3000	33.4
					011.77	1500	34.1
					031.76	3000	33.9
					032.76	3000	33.7
					033.64	3000	34.0
S1277	11.63	1.05	08:51:42.35	11:50:07.80	008.77	1500	34.6
					008.79	1500	34.3
S1279	10.55	1.12	08:51:28.98	11:50:33.00	007.76	1500	33.3
					007.78	1500	33.9
S1288	11.33	1.07	08:51:42.37	11:51:23.10	007.76	1500	33.4
					007.78	1500	34.0
S1293	12.09	1.01	08:51:39.42	11:51:45.90	028.74	3000	34.2
					028.78	3000	34.2
					033.69	3000	34.3
					033.73	3000	34.5
S1305^*	12.23	0.99	08:51:35.79	11:53:35.00	398.79	2580	34.3
					431.68	2580	34.2
S1319^⋆	12.91	0.97	08:51:48.80	11:56:52.0	398.79	2580	34.4
					431.68	2580	34.3
S1323	12.83	0.78	08:51:35.43	11:57:56.80	028.74	3000	33.2
					028.78	3000	33.2
					033.69	3000	33.5
					033.73	3000	33.5
S1438^*	12.89	0.82	08:52:11.35	11:45:37.50	398.79	2580	33.1
					431.68	2580	33.0
S1487^*	12.63	0.64	08:52:04.81	11:58:28.80	398.79	2580	33.4
					431.68	2580	33.3
S1607^*	12.62	0.56	08:52:21.45	11:50:41.70	398.79	2580	33.7
					431.68	2580	33.7
S2207^*	12.65	0.62	08:51:32.47	11:47:52.50	398.79	2580	31.9
					431.68	2580	31.9
S2208	12.78	0.82	08:51:32.42	11:48:01.30	028.74	3000	33.0
					028.78	3000	33.0
					033.69	3000	33.1
					033.73	3000	33.1

Notes. The stars were observed using two different setups, except for those marked with (*), which were only observed using the setup centred at 580 nm (see text).

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