**Table 3:** C stars in the outer disk of M 31^a.
id	RA	Dec	I	$\sigma_I$	R-I	$\sigma_{R-I}$	$\rm CN-TiO$	$\sigma_{{\rm CN-TiO}}$
1	0:33:11.05	+38:56:04.9	20.370	0.010	1.174	0.016	0.470	0.022
2	0:34:38.03	+39:09:34.6	21.038	0.024	1.228	0.037	0.335	0.036
3	0:34:48.01	+39:17:32.4	20.716	0.021	0.991	0.028	0.331	0.029
4	0:34:51.98	+39:21:02.6	20.552	0.019	1.036	0.029	0.377	0.040
5	0:34:52.93	+39:20:53.5	20.263	0.016	1.094	0.023	0.276	0.031
6	0:34:53.37	+39:14:41.2	21.096	0.027	1.257	0.048	0.316	0.045
7	0:34:56.68	+39:21:33.9	21.382	0.030	1.886	0.070	0.420	0.041
8	0:35:01.11	+39:25:10.8	20.362	0.014	1.130	0.024	$0.812\dagger$	0.023
9	0:35:07.62	+39:12:20.1	20.749	0.019	1.066	0.028	0.391	0.030
10	0:35:09.54	+39:22:23.0	20.660	0.019	1.316	0.031	$0.773\dagger$	0.025
11	0:35:14.95	+39:27:53.5	20.677	0.020	1.671	0.043	0.444	0.028
12	0:35:16.33	+39:26:07.8	19.854	0.011	1.224	0.017	0.269	0.022
13	0:35:23.31	+39:23:14.4	20.352	0.014	1.145	0.022	$0.918\dagger$	0.021
14	0:35:30.28	+39:24:50.9	20.552	0.019	1.036	0.029	0.377	0.040
15	0:35:33.60	+39:22:32.6	21.044	0.024	1.934	0.064	0.629	0.025

^a Units of right ascensions are hours, minutes and seconds, and units of declination are degrees, arcminutes and arcseconds.
$\dagger$ : stars in SW3 which (CN-TiO) are certainly affected by the time lag between observations (see Sect. 3.2).

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations
	3 Results
	4 Discussion
	References