STONKS first results: Long-term transients in the XMM-Newton Galactic plane survey

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Table D.1

Results of spectral fitting to X-ray selected STONKS alert sources. We list here the STONKS alert class and parameters derived from fitting the X-ray spectra to X-ray sources.

No.	Alert	OBSID	Model	N_H	kT	kT₂	kT₃	Abund	α	dof	$χ_{ν}^{2}$ $\chi_{\nu}^{2}$	N	C-stat
1	FD	0886010101	`bbody`	$68 . 38_{- \infty}^{+ 217.29}$ $68.38_{-\infty}^{+217.29}$	$1 . 22_{- 0.93}^{+ 6.99}$ $1.22_{-0.93}^{+6.99}$	−	−	−	−	7	1.29	−	−
			`powerlaw`	$84 . 38_{- \infty}^{+ 119.10}$ $84.38_{-\infty}^{+119.10}$	−	−	−	−	$3 . 86_{- 6.46}^{+ \infty}$ $3.86_{-6.46}^{+\infty}$	7	1.30	−	−
			`apec`	$39 . 50_{- 20.35}^{+ 34.30}$ $39.50_{-20.35}^{+34.30}$	$57 . 59_{- 51.86}^{+ \infty}$ $57.59_{-51.86}^{+\infty}$	−	−	1.0	−	7	1.40	−	−
			`bremss`	$78 . 16_{- 56.16}^{+ 223.95}$ $78.16_{-56.16}^{+223.95}$	$2 . 81_{- \infty}^{+ \infty}$ $2.81_{-\infty}^{+\infty}$	−	−	−	−	7	1.30	−	−
			`bremss + gauss`	$0 . 77_{- 0.77}^{+ 8.27}$ $0.77_{-0.77}^{+8.27}$	$22 . 79_{- 22.73}^{+ \infty}$ $22.79_{-22.73}^{+\infty}$	6.7	−	−	−	5	0.86	−	−
2	FD	0886010401	`bbody`	$1 . 19_{- 1.03}^{+ 2.39}$ $1.19_{-1.03}^{+2.39}$	$1 . 66_{- 0.58}^{+ 1.03}$ $1.66_{-0.58}^{+1.03}$	−	−	−	−	10	0.76	−	−
			`powerlaw`	$2 . 75_{- 2.10}^{+ 4.67}$ $2.75_{-2.10}^{+4.67}$	−	−	−	−	$1 . 08_{- 1.11}^{+ 1.70}$ $1.08_{-1.11}^{+1.70}$	10	0.72	−	−
			`apec`	4.12^+3.53	$7 . 80_{- 5.58}^{+ \infty}$ $7.80_{-5.58}^{+\infty}$	−	−	1.0	−	10	0.51	−	−
			`bremss`	$3 . 05_{- 0.96}^{+ 1.42}$ $3.05_{-0.96}^{+1.42}$	$199 . 36_{- \infty}^{+ \infty}$ $199.36_{-\infty}^{+\infty}$	−	−	−	−	10	0.72	−	−
3	FD	0886010401	`bbody`	$1 . 40_{- \infty}^{+ 2.80}$ $1.40_{-\infty}^{+2.80}$	$1 . 70_{- 0.72}^{+ 2.31}$ $1.70_{-0.72}^{+2.31}$	−	−	−	−	9	1.80	−	−
			`powerlaw`	$3 . 14_{- 2.26}^{+ 3.83}$ $3.14_{-2.26}^{+3.83}$	−	−	−	−	$1 . 38_{- 1.33}^{+ 1.80}$ $1.38_{-1.33}^{+1.80}$	9	1.62	−	−
			`apec`	$2 . 98_{- 1.17}^{+ 2.57}$ $2.98_{-1.17}^{+2.57}$	$63 . 93_{- \infty}^{+ \infty}$ $63.93_{-\infty}^{+\infty}$	−	−	1.0	−	9	1.63	−	−
			`bremss`	$2 . 95_{- 1.22}^{+ 2.92}$ $2.95_{-1.22}^{+2.92}$	$95 . 24_{- \infty}^{+ \infty}$ $95.24_{-\infty}^{+\infty}$	−	−	−	−	9	1.63	−	−

Notes. The Model column indicates the model which has been combined with ISM absorption (tbabs*) to provide the spectral fit. The N_H column gives the neutral hydrogen column density in units of × 10² 2 cm⁻². The kT (also kT₂ and kT₃), Abundance, and α columns indicate the characteristic temperature(s) in units of keV, solar abundance as fixed for model fitting, or power law index derived from the spectral fit as required. The final four columns indicate the quality of the fit. They either give the give the number of degrees of freedom and the reduced chi-squared value, or the number of photons and the Cash stat value. Where the errors on physical parameters cannot be bound by fitting this is indicated as ∞. The full Table is available at the CDS.

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