EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 544 (August 2012) A&A, 544 (2012) A17 Full HTML
Free Access

Table 4

Results of spectral fits.

Model  (d.o.f.) Null Hyp. NH Parameter FX Comment
(%) (1021 cm-2) (erg s-1 cm-2)
[1] bbody 1.66(61) 0.091 k T∞ 138(3) eV Wilms et al. abundances
[2] bbody 2.22(61) 1.3 × 10-5 2.76(23) k T∞ 152(3) eV 5.9(4) × 10-13 Hamaguchi et al. abundances
[3] bbody 1.21(60) 13 k T∞ 124(4) eV 1.20(22) × 10-12 ZO = 1.66(12) (solar)
[4] nsa B0 1.64(61) 0.114 T eff K M ⋆  = 1.4 M⊙, R ⋆  = 10 km
[5] nsa B0 1.70(59) 0.067 4.25(18) T eff K  M⊙, R ~ 10 km a
[6] nsa B12 1.80(61) 0.013 T eff 7.1(3) × 105 K M ⋆  = 1.4 M⊙, R ⋆  = 10 km
[7] nsa B12 1.43(59) 1.673 T eff K M ~ 2 M⊙, R ~ 7 km b
[8] nsa B13 1.98(61) 7.6 × 10-4 T eff K M ⋆  = 1.4 M⊙, R ⋆  = 10 km
[9] powerlaw 2.37(61) 9.1 × 10-7 9.9(4) Γ 8.58(26) 8(5) × 10-7 Wilms et al. abundances
[10] bbody-gauss 1.05(57) 38 2.7(3) k T ∞ eV ZO = 1.64(15) (solar)
ϵ keV σ = 0.14(1σ),EW = 91 eV
[11] bbody-2*gauss 1.01(58) 46 2.61 ⋆  k T ∞ 134.9(2.4) eV 7.3(4) × 10-13 Wilms et al. abundances
ϵ 1 keV σ = 0.1 ⋆ ,EW = 71 eV
ϵ 2 1.35(4) keV σ = 0.1 ⋆ ,EW = 86 eV
[12] bbody-2*gauss 1.00(57) 48 2.2(3) k T ∞ 141(6) eV Wilms et al. abundances
ϵ 1 keV σ = 0.1 ⋆ ,EW = 71 eV
ϵ 2 1.35(3) keV σ = 0.1 ⋆ ,EW = 104 eV
[13] bbody+bbody 1.17(59) 17 5.2(6) 37(4) eV  kmc
119(4) eV  kmc
[14] bbody+pow 1.66(61) 0.091 2.61 ⋆  k T ∞ eV 6.8(3) × 10-13 Wilms et al. abundances
Γ 1.7 ⋆  − 2.1 ⋆  d

Notes. Parameters marked with a star are held fixed during fitting.

(a)

Stellar radius unconstrained by the model.

(b)

Stellar mass and radius unconstrained by the model.

(c)

Computed for distance d = 2.3 kpc.

(d)

Upper limit to the unabsorbed flux of the power-law component, in units of erg s-1 cm-2 (0.1 − 12 keV).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.