Table 1: Observed and derived data for NGC 2264 candidates discussed Sect. 4.1 (the first eight) and Sect. 4.2 (last two listed). Columns 7-9 give respectively the $A_{\rm v}$ derived from near-infrared colours, and the dereddened I and J-magnitudes. Uncertainties in JHK are taken to be $\pm$ 0.1 mag and $\pm$ 0.3 mag for flags A and C respectively, yielding errors in $A_{\rm v}\pm 1$ mag for flag A, $\pm$ 3 mag for flag C. These errors are carried through to the dereddened magnitudes (see text for details).
2MASS designation I J H K $A_{\rm v}$ der. I der. J 2MASS flag

2MASS J06395722+0941011 18.09 16.00 15.27 14.87 1.39 17.4 $\pm$ 0.5 15.6 $\pm$ 0.3 AAB

2MASS J06400642+0944197 18.27 16.10 15.28 15.23 1.04 17.8 $\pm$ 0.5 15.8 $\pm$ 0.3 AAC

2MASS J06401053+0939557 18.39 15.65 14.66 14.24 3.49 16.7 $\pm$ 0.5 14.7 $\pm$ 0.3 AAA

2MASS J06410604+0949232 18.00 15.71 15.03 14.70 0.89 17.6 $\pm$ 0.5 15.5 $\pm$ 0.3 AAB

2MASS J06402759+0945464 18.05 16.08 15.38 15.09 0.86 17.6 $\pm$ 0.5 15.8 $\pm$ 0.3 AAC

2MASS J06405674+0938101 18.64 16.40 15.49 15.15 2.65 17.4 $\pm$ 1.0 15.7 $\pm$ 0.6 BAC

2MASS J06413132+0935120 17.95 15.55 14.86 14.26 1.77 17.1 $\pm$ 0.5 15.1 $\pm$ 0.3 AAA

2MASS J06401789+0941546 18.44 16.40 15.82 15.00 1.58 17.7 $\pm$ 1.5 16.0 $\pm$ 0.9 CBB

2MASS J06404873+0939017 21.25 16.80 15.97 15.32 2.97 19.8 $\pm$ 1.5 16.0 $\pm$ 0.9 CCC

2MASS J06411281+0945529 20.80 16.74 15.61 14.69 6.00 17.9 $\pm$ 1.5 15.1 $\pm$ 0.9 CBB

**Table 1:** Observed and derived data for NGC 2264 candidates discussed Sect. 4.1 (the first eight) and Sect. 4.2 (last two listed). Columns 7-9 give respectively the $A_{\rm v}$ derived from near-infrared colours, and the dereddened I and J-magnitudes. Uncertainties in *JHK* are taken to be $\pm$ 0.1 mag and $\pm$ 0.3 mag for flags A and C respectively, yielding errors in $A_{\rm v}\pm 1$ mag for flag A, $\pm$ 3 mag for flag C. These errors are carried through to the dereddened magnitudes (see text for details).
2MASS designation	I	J	H	K	$A_{\rm v}$	der. I	der. J	2MASS flag
2MASS J06395722+0941011	18.09	16.00	15.27	14.87	1.39	17.4 $\pm$ 0.5	15.6 $\pm$ 0.3	AAB
2MASS J06400642+0944197	18.27	16.10	15.28	15.23	1.04	17.8 $\pm$ 0.5	15.8 $\pm$ 0.3	AAC
2MASS J06401053+0939557	18.39	15.65	14.66	14.24	3.49	16.7 $\pm$ 0.5	14.7 $\pm$ 0.3	AAA
2MASS J06410604+0949232	18.00	15.71	15.03	14.70	0.89	17.6 $\pm$ 0.5	15.5 $\pm$ 0.3	AAB
2MASS J06402759+0945464	18.05	16.08	15.38	15.09	0.86	17.6 $\pm$ 0.5	15.8 $\pm$ 0.3	AAC
2MASS J06405674+0938101	18.64	16.40	15.49	15.15	2.65	17.4 $\pm$ 1.0	15.7 $\pm$ 0.6	BAC
2MASS J06413132+0935120	17.95	15.55	14.86	14.26	1.77	17.1 $\pm$ 0.5	15.1 $\pm$ 0.3	AAA
2MASS J06401789+0941546	18.44	16.40	15.82	15.00	1.58	17.7 $\pm$ 1.5	16.0 $\pm$ 0.9	CBB
2MASS J06404873+0939017	21.25	16.80	15.97	15.32	2.97	19.8 $\pm$ 1.5	16.0 $\pm$ 0.9	CCC
2MASS J06411281+0945529	20.80	16.74	15.61	14.69	6.00	17.9 $\pm$ 1.5	15.1 $\pm$ 0.9	CBB

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations of candidate NGC 2264 members: Optical colour selection
	3 Dereddening the sample
	4 Discussion
	5 Concluding remarks
	References