Table 4: Line ratios for Cen X-4 and template stars.
Template Spectral type 6361(FeII)/ 6494(FeII)/

6161 (TiO) 6161 (TiO)

Cen X-4 $0.41\pm0.06$ $0.52\pm0.06$

HR 5536 K3 III 1.43 1.52

HR 6159 K4 III 1.59 1.88

HR 5622 K5 III 0.76 0.86

HD 184467 K7 III 0.68 0.78

HD 29697 K3 V 0.18 0.44

HD 154712A K4 V 0.12 0.51

61 Cyg A K5 V 0.33 0.52

61 Cyg B K7 V 0.50 0.56

**Table 4:** Line ratios for Cen X-4 and template stars.
Template	Spectral type	6361(FeII)/	6494(FeII)/
		6161 (TiO)	6161 (TiO)
Cen X-4		$0.41\pm0.06$	$0.52\pm0.06$
HR 5536	K3 III	1.43	1.52
HR 6159	K4 III	1.59	1.88
HR 5622	K5 III	0.76	0.86
HD 184467	K7 III	0.68	0.78
HD 29697	K3 V	0.18	0.44
HD 154712A	K4 V	0.12	0.51
61 Cyg A	K5 V	0.33	0.52
61 Cyg B	K7 V	0.50	0.56

Source LaTeX | All tables | In the text

	1 Introduction
	2 Cen X-4
	3 Observational data and reduction
	4 Cen X-4 properties
	5 Doppler tomography
	6 Conclusions
	References