Orbit of the young very low-mass spectroscopic binary CHXR 74

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Volume 537 (January 2012)

A&A, 537 (2012) A13

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Table 1

RV measurements of CHXR74.

Date	HJD	RV	σ_RV
		[km s^-1]	[km s^-1]

2000 03 13	2 451 616.787145	15.829^a	0.012
2000 03 31	2 451 634.520915	15.211^a	0.216
2000 04 22	2 451 656.512470	15.770^a	0.095
2000 05 21	2 451 686.482610	14.822^a	0.031
2004 03 03	2 453 067.829560	17.863^a	0.033
2004 03 12	2 453 076.664875	18.223^a	0.005
2004 03 21	2 453 085.770220	18.282^a	0.109
2004 03 24	2 453 088.798215	18.020^a	0.083
2004 03 31	2 453 095.780420	19.003^a	0.448
2004 04 01	2 453 096.776000	18.779^a	0.008
2005 03 21	2 453 450.589225	19.468^a	0.172
2006 04 10	2 453 835.634560	18.845
2006 06 15	2 453 901.522670	19.642

2008 02 19	2 454 515.798960	18.712
2008 03 07	2 454 532.786240	19.202
2008 03 19	2 454 544.569660	19.719
2009 01 12	2 454 843.867690	18.700
2009 01 14	2 454 845.857240	18.595
2009 01 16	2 454 847.754840	18.628
2011 04 06	2 455 657.749380	16.396
2011 05 27	2 455 708.561260	16.168
2011 07 03	2 455 746.490790	15.414

Notes. Listed are new RV data (bottom panel) and previous RV measurements (top panel), which were re-processed for this work. HJD is given at the middle of the exposure; σ_RV is the sample standard deviation of two consecutive measurements. The error of the relative RVs taking into account RV noise caused by activity is estimated to about 450 m s^-1. An additional error of about 400 m s^-1 has to be taken into account for the absolute RVs.

^(a)

RV value is the average of two single consecutive measurements.

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