Follow-up observations of X-ray emitting hot subdwarf stars: the compact He-poor sdO star Feige 34

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Table 3.

Best-fit parameters of Feige 34 obtained with the sum of two thermal plasma emission models (APEC) and free element abundance.

Parameter	Unit	Value
N_H	cm⁻²	(
Abundance	–	0.21
kT_APEC1	keV	0.30
Flux_APEC1(0.2–3 keV) ^(a)	×10⁻¹⁴ erg cm⁻² s⁻¹	1.6
kT_APEC2	keV	1.1
Flux_APEC2(0.2–3 keV) ^(a)	×10⁻¹⁴ erg cm⁻² s⁻¹	1.8
Flux_TOT(0.2–3 keV) ^(a)	×10⁻¹⁴ erg cm⁻² s⁻¹	3.4
Luminosity (0.2–3 keV) ^(b)	×10²⁹ erg s⁻¹	2.0
/d.o.f.	–	1.20/23

Notes.

^(a)

Corrected for absorption.

^(b)

Assuming a source distance d = 226 pc.

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