Table 1: Best-fit parameters for the absorbed power-law model of the HETGS spectra of IGR J00291+5934 and for the absorbed power-law plus thermal component of the HETGS, PCA, and Chandra zeroth-order spectra. $N_{{\rm H}}$ is the column density in units of 10²¹ cm $^{\rm -2}$ ; $kT_{\rm in}$ is the inner temperature of the thermal (DISKBB) component; d.o.f. = degrees of freedom (the decrease in d.o.f. in the combined HEG/MEG and PCA spectrum is due to the heavy rebinning we performed in the HETGS data, see text); in all the fits we fixed HEG, MEG and zeroth-order normalisation factors to 1. The indicated errors are at 1 $\sigma$ .
HEG / MEG HEG / MEG / PCA

$N_{{\rm H}}$ 4.3 $\pm$ 0.4 $4.3 {+0.7 \atop -0.5}$

$\Gamma$ 2.06 $\pm$ 0.07 $1.7\pm0.08$

$kT_{\rm in}$ $0.42 {+0.07 \atop -0.06}$ keV

PCA norm 1.13

reduced $\chi^2_{\nu}$ 0.79 (431 d.o.f.) 0.9 (161 d.o.f.)

HEG / MEG

PCA / 0th order

$N_{{\rm H}}$ $3.9{+0.5 \atop -0.4}$

$\Gamma$ 1.7 $\pm$ 0.04

$kT_{\rm in}$ 0.40 $\pm$ 0.06 keV

PCA norm 1.13

reduced $\chi^2_{\nu}$ 1.15 (293 d.o.f.)

**Table 1:** Best-fit parameters for the absorbed power-law model of the HETGS spectra of IGR J00291+5934 and for the absorbed power-law plus thermal component of the HETGS, PCA, and *Chandra* zeroth-order spectra. $N_{{\rm H}}$ is the column density in units of 10²¹ cm $^{\rm -2}$ ; $kT_{\rm in}$ is the inner temperature of the thermal (DISKBB) component; d.o.f. = degrees of freedom (the decrease in d.o.f. in the combined HEG/MEG and PCA spectrum is due to the heavy rebinning we performed in the HETGS data, see text); in all the fits we fixed HEG, MEG and zeroth-order normalisation factors to 1. The indicated errors are at 1 $\sigma$ .
	HEG / MEG	HEG / MEG / PCA
$N_{{\rm H}}$	4.3 $\pm$ 0.4	$4.3 {+0.7 \atop -0.5}$
$\Gamma$	2.06 $\pm$ 0.07	$1.7\pm0.08$
$kT_{\rm in}$		$0.42 {+0.07 \atop -0.06}$ keV
PCA norm		1.13
reduced $\chi^2_{\nu}$	0.79 (431 d.o.f.)	0.9 (161 d.o.f.)
	HEG / MEG
	PCA / 0th order
$N_{{\rm H}}$	$3.9{+0.5 \atop -0.4}$
$\Gamma$	1.7 $\pm$ 0.04
$kT_{\rm in}$	0.40 $\pm$ 0.06 keV
PCA norm	1.13
reduced $\chi^2_{\nu}$	1.15 (293 d.o.f.)

Source LaTeX | All tables | In the text

	1 Introduction
	2 IGR J00291+5934
	3 Observations and data reduction
	4 Results
	5 Discussion
	References