Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8

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Volume 521 (October 2010)

A&A, 521 (2010) A24

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Table 1:

RV measurements of Cha H $\alpha$ 8.
Date	HJD	RV	$\sigma_{\rm RV}$
		[km s^-1]	[km s^-1]
2000 04 05	2451639.61095	14.591	0.400
2000 04 24	2451658.72597	15.177	0.400
2002 03 06	2452339.68965	17.499^a	0.193
2002 03 22	2452355.65264	17.355^a	0.150
2002 04 16	2452380.61646	17.651^a	0.150
2002 04 19	2452383.57565	17.451^a	0.379
2005 03 21	2453450.62080	14.791^a	0.150
2006 04 10	2453835.65109	16.035	0.150
2006 07 09	2453926.50137	16.403	0.150
2007 03 15	2454174.66101	17.358^a	0.402
2007 03 22	2454181.69756	17.563^a	0.333
2007 06 08	2454260.49431	17.449^a	0.182
2007 07 21	2454302.54665	17.572^a	0.150
2008 01 02	2454467.82631	17.573^a	0.150
2008 07 09	2454657.48163	18.190^a	0.150
2009 01 02	2454833.80683	18.780^a	0.155
2010 01 09	2455205.74852	13.900^a	0.150
2010 03 01	2455257.26535	14.533^a	0.203

Notes. Listed are new RV data (bottom panel) and previous RV measurements (top panel), which have been re-processed for this work. HJD is given at the middle of the exposure; $\sigma_{\rm RV}$ is the estimated error in the relative RVs. 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 (three in the case of 2010 03 01) single consecutive measurements.

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