Effective area calibration of the reflection grating spectrometers of XMM-Newton - II. X-ray spectroscopy of DA white dwarfs

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Table 1:

Summary of LETGS observations used in this paper.
Source	Sirius B	Sirius B	Sirius B	HZ 43A
ObsID	1421	1452	1459	59
start date	28 Oct. 1999	26 Oct. 1999	27 Oct. 1999	12 Nov. 1999
Duration (ks)	25.3	28.0	12.0	40.2
Net exposure (ks)^a	13.8	19.0	11.8	38.9
0th order counts/s	$1.282\pm 0.010$	$1.249\pm 0.008$	$1.310\pm 0.011$	$8.826\pm 0.015$
PHA difference^b	$-5.6\pm 2.0$	$-16.2\pm 1.9$	$-6.5\pm 2.0$	$-7.0\pm 1.4$

^a Dead-time corrected exposure time after filtering out periods of high background. ^b The PHA (pulseheight) difference is the average PHA of the spectrum relative to a standard spectrum.

Source LaTeX | All tables | In the text

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