Star formation history of Canis Major R1 - I. Wide-Field X-ray study of the young stellar population

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Volume 506 / No 2 (November I 2009)

A&A, 506 2 (2009) 711-727

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Table 2:

List of possible additional faint counterparts to CMaX sources.
CMaX	RA	Dec	$R_{\rm int}$	R	V-R	R-I	$J_{\rm int}$	J	J-H^d	H-K^d	Age	Mass
	J2000	J2000	(mag)	(mag)	(mag)	(mag)	(mag)	(mag)	(mag)	(mag)	(Myr)	( $M_{\odot }$ )
15-1	7 00 13.364	-11 18 53.43	16.5^e	17.1^a	0.29	1.08^b	14.4^e	14.77	0.70 $\pm$ 0.06	0.19 $\pm$ 0.07	10-20	0.5-1.0
15-2	7 00 13.509	-11 19 11.14		18.3	0.70	0.78		16.84	0.66 $\pm$ 0.28	0.81 $\pm$ 0.28^c	??	??
15-3	7 00 15.325	-11 18 58.56		18.6	0.73	0.79		16.71	0.38 $\pm$ 0.29	0.68 $\pm$ 0.34^c	??	??
15-4	7 00 15.378	-11 19 3.78		19.7	1.6	1.56^b		16.45	0.76 $\pm$ 0.19	0.29 $\pm$ 0.24	10-20	0.1-0.5
17N	7 00 18.724	-11 22 24.02		18.8	0.89	0.90^b		16.59	0.50 $\pm$ 0.25	0.58 $\pm$ 0.30^c	??	??
17S1	7 00 18.806	-11 23 16.10	16.9^e	17.1	0.9	0.79^b	15.4^e	15.58	0.77 $\pm$ 0.1	0.14 $\pm$ 0.14	20-50	0.5-1.0
17S2	7 00 18.886	-11 23 23.67		19.2	1.22	1.15^b		16.71	0.89 $\pm$ 0.22	0.14 $\pm$ 0.29	20-50	0.1-0.5
37-1	7 01 22.297	-11 09 9.29		17.7	0.9	0.97^b		16.18	0.65 $\pm$ 0.15	-0.1 $\pm$ 0.24	10-20	0.5-1.0
37-2	7 01 23.560	-11 08 26.77		18.2	1.61	1.67^b		15.71	0.73 $\pm$ 0.12	0.07 $\pm$ 0.16	1-2	0.5-1.0
37-3	7 01 24.356	-11 09 03.00	15.9^e	16.3^a	-0.3	0.88^b	14.3^e	14.78	0.55 $\pm$ 0.06	0.11 $\pm$ 0.08	5-10	0.5-1.0
42-1	7 01 35.313	-11 10 12.23		17.2	0.73	0.73^b					20-50	0.5-1.0
42-2	7 01 35.437	-11 10 44.07	15.6^e	15.7^a	-0.08	0.86^b	13.9^e	14.44	0.35 $\pm$ 0.06	0.08 $\pm$ 0.08	2-5	0.5-1.0
42-3	7 01 35.473	-11 10 14.46		16.4	0.74	0.71^b		14.70	0.73 $\pm$ 0.08	0.21 $\pm$ 0.08	10-20	0.5-1.0
55N	7 02 8.021	-11 16 17.65	18.2^e	18.2^a	0.98	1.08^b	15.6^e	15.67	0.64 $\pm$ 0.1	0.35 $\pm$ 0.13	10-20	0.1-0.5
55S	7 02 8.139	-11 17 35.46		18.9	0.6	0.74		16.46	0.73 $\pm$ 0.2	0.58 $\pm$ 0.22^c	??	??

Notes: (a) Magnitudes adopted from the NOMAD and/or USNO catalogues, when the estimation from Gemini images are unavailable, due to saturation; (b) counterparts selected according to the R-I excess; (c) counterparts having H-K excess; (d) the 2MASS catalogue was used to obtain the JHK magnitudes, for which error bars are provided; (e) $R_{\rm int}$ and $J_{\rm int}$ represent the ``integrated'' magnitudes (see Sect. 4.2), which are shown together with the brightest object of each group.

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