Interstellar oxygen along the line of sight of Cygnus X-2

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Table 3

Best fit parameters for Cygnus X-2.

Component	Parameter	Value
`pow`	norm	88.4 ± 0.5
	Γ	1.25 ± 0.01

`hot` # 1	N_H	1.9 ± 0.1
	kT	0.7 (fixed)
`hot` # 2	N_H	0.05 ± 0.01
	kT	2.5 ± 0.9
`hot` # 3	N_H	0.05 ± 0.01
	kT	11.7 ± 0.4

Notes.The symbol kT represents the temperature in eV, and the N_H is the column density in 10²¹ cm⁻². The symbol Γ is the photon index, and the normalisation of the power law is in units of 10⁴⁴ ph s⁻¹ keV⁻¹ at 1 keV.

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