Table 1: System parameters for Sk 160/SMC X-1. The two values for $K_{\rm o}$ are those resulting from fitting the He I absorption line RV curve without and with heating corrections respectively. The four columns for the various inferred parameters are the limiting values assuming $\beta = 1$ and $i = 90^{\circ }$ for each of these two values of $K_{\rm o}$ as discussed in the text.
Parameter Fit to raw RV curve Fit to corrected RV curve

$\gamma$ /km s^-1 $174.1 \pm 1.5$ $173.8 \pm 1.5$

$K_{\rm o}$ /km s^-1 $18.0 \pm 1.8$ $21.8 \pm 1.8$

q $0.060 \pm 0.006$ $0.073 \pm 0.006$

Roche lobe-filling edge-on Roche lobe-filling edge-on

(upper mass limits) (lower mass limits) (upper mass limits) (lower mass limits)

$\beta$ 1.00 $0.77 \pm 0.02$ 1.00 $0.79 \pm 0.02$

i/deg $64.0 \pm 1.3$ 90.0 $65.3 \pm 1.3$ 90.0

$M_{\rm x}$ / $M_{\odot}$ $1.01 \pm 0.10$ $0.73 \pm 0.08$ $1.21 \pm 0.10$ $0.91 \pm 0.08$

$M_{\rm o}$ / $M_{\odot}$ $16.8 \pm 0.5$ $12.1 \pm 0.2$ $16.6 \pm 0.4$ $12.5 \pm 0.1$

a/ $R_{\odot}$ $27.4 \pm 0.3$ $24.6 \pm 0.2$ $27.3 \pm 0.3$ $24.7 \pm 0.1$

$R_{\rm L}$ / $R_{\odot}$ $16.7 \pm 0.3$ $14.9 \pm 0.1$ $16.3 \pm 0.2$ $14.8 \pm 0.1$

$R_{\rm o}$ / $R_{\odot}$ $16.7 \pm 0.3$ $11.5 \pm 0.3$ $16.3 \pm 0.2$ $11.7 \pm 0.3$

**Table 1:** System parameters for Sk 160/SMC X-1. The two values for $K_{\rm o}$ are those resulting from fitting the He I absorption line RV curve without and with heating corrections respectively. The four columns for the various inferred parameters are the limiting values assuming $\beta = 1$ and $i = 90^{\circ }$ for each of these two values of $K_{\rm o}$ as discussed in the text.
Parameter	Fit to raw RV curve	Fit to corrected RV curve
$\gamma$ /km s^-1	$174.1 \pm 1.5$	$173.8 \pm 1.5$
$K_{\rm o}$ /km s^-1	$18.0 \pm 1.8$	$21.8 \pm 1.8$
q	$0.060 \pm 0.006$	$0.073 \pm 0.006$
	Roche lobe-filling	edge-on	Roche lobe-filling	edge-on
	(upper mass limits)	(lower mass limits)	(upper mass limits)	(lower mass limits)
$\beta$	1.00	$0.77 \pm 0.02$	1.00	$0.79 \pm 0.02$
i/deg	$64.0 \pm 1.3$	90.0	$65.3 \pm 1.3$	90.0
$M_{\rm x}$ / $M_{\odot}$	$1.01 \pm 0.10$	$0.73 \pm 0.08$	$1.21 \pm 0.10$	$0.91 \pm 0.08$
$M_{\rm o}$ / $M_{\odot}$	$16.8 \pm 0.5$	$12.1 \pm 0.2$	$16.6 \pm 0.4$	$12.5 \pm 0.1$
a/ $R_{\odot}$	$27.4 \pm 0.3$	$24.6 \pm 0.2$	$27.3 \pm 0.3$	$24.7 \pm 0.1$
$R_{\rm L}$ / $R_{\odot}$	$16.7 \pm 0.3$	$14.9 \pm 0.1$	$16.3 \pm 0.2$	$14.8 \pm 0.1$
$R_{\rm o}$ / $R_{\odot}$	$16.7 \pm 0.3$	$11.5 \pm 0.3$	$16.3 \pm 0.2$	$11.7 \pm 0.3$

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations
	3 Data reduction
	4 Data analysis
	5 Discussion
	References
	Online Material