Astrometric confirmation of young low-mass binaries and multiple systems in the Chamaeleon star-forming regions

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Volume 546 (October 2012)

A&A, 546 (2012) A63

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Table 2

VLT/NACO observation log.

Object	Other name	JD−2 453 700	Date of	DIT	NDIT	Number	Airmass	Seeing	Filter
		[days]	observation	[s]		of images		[arcsec]

RX J0915.5-7609	RX J0915.5-7608	461.53412	2 Mar. 2007	2.2	28	20	1.73	1.04	Ks
		1181.59508^a	19 Feb. 2009	2	30	6	1.66	0.88	Ks
RX J0919.4-7738	HIP 45734	815.51911	19 Feb. 2008	1.2	50	30	1.92	0.99	Ks
RX J0935.0-7804	2MASS J09345604	461.59183	2 Mar. 2007	7	9	30	1.71	1.22	Ks
	-7804193	814.61953	18 Feb. 2008	11	6	28	1.72	1.13	Ks
		815.58352	19 Feb. 2008	30	2	38	1.78	1.05	J
		1182.58189^a	20 Feb. 2009	3	20	30	1.77	0.73	Ks
RX J0952.7-7933	HD 86588	460.58336	1 Mar. 2007	2.5/1.5	25/40	10/12	1.81	1.26	Ks
		814.64850	18 Feb. 2008	3	20	13	1.76	1.01	Ks
		814.65931	18 Feb. 2008	3	20	6	1.75	0.90	J
		1181.63897^a	19 Feb. 2009	1	60	10	1.77	0.68	Ks
		1181.64617^a	19 Feb. 2009	0.5	120	5	1.76	0.69	H
		1181.65104^a	19 Feb. 2009	1.5	40	5	1.76	0.72	J
		1550.53614^a	23 Feb. 2010	0.347	126	10	1.96	0.86	Ks
		1853.86365^a	23 Dec 2010	3	20	30	1.74	2.21	Ks
		1945.57285^a	25 Mar. 2011	0.347	126	10	1.75	1.11	Ks
RX J1014.2-7636	2MASS J10140807	1550.56298^a	23 Feb. 2010	0.347	126	42	1.83	0.88	Ks
	-7636327	1945.60036^a	25 Mar. 2011	0.347	126	42	1.63	1.11	Ks
SZ Cha	Ass Cha T 2-6	82.64912	16 Feb. 2006	1	50	20	1.75	0.73	Ks
		1181.66756^a	19 Feb. 2009	0.5	120	22	1.70	0.65	Ks
Ced 110 IRS 2	Ass Cha T 2-21	82.61949	16 Feb. 2006	0.3454	100	20	1.85	0.75	Ks
		815.61187	19 Feb. 2008	0.3454	174	5	1.85	0.78	Ks
		815.61683	19 Feb. 2008	0.5	120	5	1.84	0.80	J
Cha Hα 2	ISO-ChaI 111	82.68981	16 Feb. 2006	10	6	20	1.70	0.63	Ks
		460.71934	1 Mar. 2007	60	2	15	1.66	1.15	Ks
		461.67171	2 Mar. 2007	30	2	24	1.68	1.20	J
VW Cha	Ass Cha T 2-31	83.90711	17 Feb. 2006	0.3454	100	20	1.94	0.49	Ks
RX J1109.4-7627	CHXR 37	1182.81186^a	20 Feb. 2009	2	30	6	1.67	0.57	Ks
		1551.69870^a	24 Feb. 2010	0.347	126	12	1.63	1.00	Ks
HD 97300	Ass Cha T 2-41	460.60766	1 Mar. 2007	0.5	110	20	1.77	1.23	Ks
		816.71442	20 Feb. 2008	0.5	120	5	1.63	0.80	Ks
		816.71936	20 Feb. 2008	0.3454	174	5	1.63	0.87	J
WX Cha	Ass Cha T 2-45	1181.91858^a	19 Feb. 2009	2	30	6	2.00	0.76	Ks
WY Cha	Ass Cha T 2-46	816.70106	20 Feb. 2008	2	30	5	1.64	0.68	Ks
		816.70577	20 Feb. 2008	7.5	8	5	1.64	0.73	J
HJM C 7-11	CHXR 47	461.78979	2 Mar. 2007	2	30	21	1.71	1.41	Ks
		815.79485	19 Feb. 2008	2	30	21	1.68	0.53	Ks
		1181.70578^a	19 Feb. 2009	1.5	40	36	1.67	0.52	Ks
		1181.77101^a	19 Feb. 2009	1.5	40	17	1.66	0.50	H
		1181.78711^a	19 Feb. 2009	10	6	15	1.67	0.67	J
Sz 41	Ass Cha T 2-51	1181.88546^a	19 Feb. 2009	1.5	40	6	1.84	0.81	Ks
		1550.08623^a	23 Feb. 2010	0.347	126	42	1.83	1.16	Ks
HM Anon	Ass Cha T 2-54	815.69528	19 Feb. 2008	1	60	12	1.68	0.57	Ks
		815.70581	19 Feb. 2008	2	30	12	1.67	0.56	J
		1182.87337^a	20 Feb. 2009	1	60	32	1.84	0.52	Ks

Notes. Each image consists of the number of exposures given in Col. 6 multiplied by the individual integration time given in Col. 5.

^(a)

Data taken in cube mode, hence each image is a cube of the number of planes given in Col. 6, each having the individual integration time given in Col. 5.

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