Table 1: Number of spectral lines from the atomic databases. Given are the number of X-ray lines (defined as lines with wavelengths $\lambda \le 100$ Å) and the sum of all lines over the whole spectral range (up to $\lambda \approx 10^7$ Å). In the APED database different entries for the same transition are possible. In the last row the number of unique lines are specified.
Database X-ray lines All lines

CHIANTI Ver. 3 $\approx$ 12.650 $\approx$ 45.000

CHIANTI Ver. 4 $\approx$ 22.350 $\approx$ 74.500

APED (total) $\approx$ 326.000 $\approx$ 463.200

APED (distinct) $\approx$ 178.000 $\approx$ 310.400

**Table 1:** Number of spectral lines from the atomic databases. Given are the number of X-ray lines (defined as lines with wavelengths $\lambda \le 100$ Å) and the sum of all lines over the whole spectral range (up to $\lambda \approx 10^7$ Å). In the APED database different entries for the same transition are possible. In the last row the number of unique lines are specified.
Database	X-ray lines	All lines
CHIANTI Ver. 3	$\approx$ 12.650	$\approx$ 45.000
CHIANTI Ver. 4	$\approx$ 22.350	$\approx$ 74.500
APED (total)	$\approx$ 326.000	$\approx$ 463.200
APED (distinct)	$\approx$ 178.000	$\approx$ 310.400

Source LaTeX | All tables | In the text

	1 Introduction
	2 Modeling novae in X-rays
	3 X-ray observations of nova V4743 Sgr
	4 Results
	5 Conclusion and outlook
	References