Table 2: Sine fits to the ${\rm H\alpha }$ emission line radial velocities. The methods employed were a convolution with a single Gaussian (SG) or Schneider & Young's (1980) double-Gaussian prescription (DG).
Object Method FWHM/Sep. ( ${\rm km~s^{-1}}$ ) $T_{\rm0}$ Period (days) K ( ${\rm km~s^{-1}}$ ) $\gamma$ ( ${\rm km~s^{-1}}$ )

HS 0139+0559 SG 600 $2452998.985\pm0.013$ $0.16923\pm0.00034$ $84.4\pm4.8$ $18.4\pm3.5$

HS 0229+8016 SG 600 $2452992.457\pm0.006$ $0.161493\pm0.000034$ $179.0\pm5.2$ $35.5\pm3.5$

HS 0506+7725 DG 700/1500 $2452990.679\pm0.022$ $0.14770\pm0.00014$ $42.6\pm4.4$ $-66.7\pm3.0$

**Table 2:** Sine fits to the ${\rm H\alpha }$ emission line radial velocities. The methods employed were a convolution with a single Gaussian (SG) or Schneider & Young's (1980) double-Gaussian prescription (DG).
Object	Method	FWHM/Sep. ( ${\rm km~s^{-1}}$ )	$T_{\rm0}$	Period (days)	K ( ${\rm km~s^{-1}}$ )	$\gamma$ ( ${\rm km~s^{-1}}$ )
HS 0139+0559	SG	600	$2452998.985\pm0.013$	$0.16923\pm0.00034$	$84.4\pm4.8$	$18.4\pm3.5$
HS 0229+8016	SG	600	$2452992.457\pm0.006$	$0.161493\pm0.000034$	$179.0\pm5.2$	$35.5\pm3.5$
HS 0506+7725	DG	700/1500	$2452990.679\pm0.022$	$0.14770\pm0.00014$	$42.6\pm4.4$	$-66.7\pm3.0$

Source LaTeX | All tables | In the text

	1 Introduction
	2 CVs in the Hamburg Quasar Survey
	3 Observations and data reduction
	4 Analysis
	5 Discussion
	6 Conclusions
	References
	Online Material