Absolute dimensions of solar-type eclipsing binaries - II. V636 Centauri: A 1.05 primary with an active, cool, oversize 0.85 secondary

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Volume 502 / No 1 (July IV 2009)

A&A, 502 1 (2009) 253-265

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Table 10:

Properties of well-studied main sequence binaries (e.g. footnote 9) with at least one component in the 0.80-1.10 $M_{\odot }$ mass interval.
System	Period	$M/M_{\odot}$	$R/R_{\odot}$	$\log L/L_{\odot}$	$v \sin i$ ^a	Variability	Ca II	$\log L_X$ ^b
					$(\mbox{km\thinspace s$^{-1}$ })$	(light curve)	emission	(cgs)
Group 1:
CGCyg	$0\hbox{$.\!\!^{\rm d}$ }63$	$0.940\pm0.012$	$0.890\pm0.013$	$-0.26\pm0.06$	71(s)	YES		<29.4
		$0.810\pm0.013$	$0.840\pm0.014$	$-0.51\pm0.03$	67(s)
CVBoo	$0\hbox{$.\!\!^{\rm d}$ }85$	$1.032\pm0.013$	$1.262\pm0.023$	$0.20\pm0.05$	$73\pm10$	YES		30.7
		$0.968\pm0.012$	$1.173\pm0.023$	$0.11\pm0.05$	$67\pm10$
V636Cen	$4\hbox{$.\!\!^{\rm d}$ }28$	$1.052 \pm 0.005$	$1.018 \pm 0.004$	$0.05 \pm 0.03$	$13.0 \pm 0.2$	YES	YES	30.0
		$0.854 \pm 0.003$	$0.830 \pm 0.004$	$-0.41 \pm 0.04$	$11.1 \pm 0.5$		YES
ZZUMa	$2\hbox{$.\!\!^{\rm d}$ }80$	$1.142\pm0.007$	$1.520\pm0.020$	$0.42\pm0.02$	33(s)	YES		<29.6
		$0.972\pm0.007$	$1.160\pm0.010$	$-0.03\pm0.03$	26(s)
FLLyr	$2\hbox{$.\!\!^{\rm d}$ }18$	$1.221\pm0.016$	$1.282\pm0.028$	$0.32\pm0.03$	$30\pm2$	?/YES	NO	30.2
		$0.960\pm0.012$	$0.962\pm0.028$	$-0.18\pm0.04$	$25\pm2$		NO
V1061Cyg	$2\hbox{$.\!\!^{\rm d}$ }35$	$1.282\pm0.015$	$1.615\pm0.017$	$0.53\pm0.03$	$36\pm2$	?/YES		30.1
		$0.932\pm0.007$	$0.974\pm0.020$	$-0.17\pm0.05$	$20\pm3$
Group 2:
HSAur	$9\hbox{$.\!\!^{\rm d}$ }85$	$0.900\pm0.019$	$1.004\pm0.024$	$-0.13\pm0.03$	5(s)	?/YES	NO	<29.3
		$0.879\pm0.017$	$0.873\pm0.024$	$-0.30\pm0.03$	5(s)		NO
RWLac	$10\hbox{$.\!\!^{\rm d}$ }37$	$0.928\pm0.006$	$1.186\pm0.004$	$0.14\pm0.03$	$2\pm2$	NO		<29.6
		$0.870\pm0.004$	$0.964\pm0.004$	$-0.10\pm0.05$	$0\pm2$
$\alpha$ Cen	79.9 yr	$1.050\pm0.007$	$1.224\pm0.003$	$0.18\pm0.01$	$2.7\pm0.7$	NO
		$0.934\pm0.007$	$0.863\pm0.005$	$-0.30\pm0.02$	$1.1\pm0.8$
V568Lyr	$14\hbox{$.\!\!^{\rm d}$ }47$	$1.074\pm0.008$	$1.399\pm0.016$	$0.26\pm0.03$	5(s)	NO
		$0.827\pm0.004$	$0.768\pm0.006$	$-0.52\pm0.04$	3(s)
Exception:
VZCep	$1\hbox{$.\!\!^{\rm d}$ }18$	$1.402\pm0.015$	$1.534\pm0.012$	$0.63\pm0.04$	$57\pm3$	NO		30.6
		$1.108\pm0.008$	$1.042\pm0.039$	$0.03\pm0.05$	$50\pm10$

^a If measured rotational velocities are not available, synchronous values (s) are given.
^b X-ray luminosities are based on Voges et al. (1999, 2000) and Motch et al. (1997).

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