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Table 3:

Results of the best XSPEC fits to the total and to the phase-resolved EPIC spectra of AI Tri.

Modela 		$\chi^2_{\rm red}$ $N_{\rm H,ISM}$ $kT_{\rm bb}$ $N_{\rm H,int}$ cover. $kT_{\rm M,low}$ $kT_{\rm M,high}$ abund. $A_{\rm bb}$ $L_{\rm bb,bol}$b $F_{\rm XMM}$
    [$10^{20}~{\rm cm}^{-2}$] [eV] [$10^{23}~{\rm cm}^{-2}$]   [keV] [keV]   [$10^6~{\rm km}^2$] [$10^{32}~{\rm erg~s}^{-1}$] $[10^{-12}~{\rm erg~cm}^{-2}~{\rm s}^{-1}]$
2005/08/22                      
MEKAL 0.96 $1.7^{\rm +0.8}_{-0.7}$ $43.0^{\rm +3.2}_{-3.0}$ $3.7^{\rm +2.4}_{-1.2}$ $0.76^{\rm +0.08}_{-0.12}$ - $6.4^{\rm +2.6}_{-1.8}$ $0.8^{\rm +0.7}_{-0.4}$ $1.9^{\rm +2.5}_{-1.0}$ $2.2^{\rm +1.6}_{-0.9}$ $7.2^{\rm +3.5}_{-2.1}$
2 MEKAL 0.95 $1.5^{\rm +0.9}_{-0.7}$ $43.7^{\rm +3.4}_{-3.0}$ $3.4^{\rm +1.7}_{-1.1}$ $0.75^{\rm +0.05}_{-0.07}$ $2.1^{\rm +2.1}_{-1.0}$ $9.1^{\rm +70}_{-3.0}$ $1.0^{\rm +1.0}_{-0.5}$ $1.6^{\rm +1.1}_{-0.8}$ $2.1^{\rm +1.5}_{-0.8}$ $7.0^{\rm +3.1}_{-2.0}$
3 MEKAL 0.94 $1.6^{\rm +0.9}_{-0.6}$ $44.4^{\rm +4.3}_{-5.8}$ $3.3^{\rm +2.1}_{-1.2}$ $0.74^{\rm +0.08}_{-0.06}$ $0.06^{\rm +0.03}_{-0.02}$          
            $2.0^{\rm +3.5}_{-0.9}$ $9.2^{\rm +70}_{-2.8}$ $1.1^{\rm +1.3}_{-0.5}$ $1.1^{\rm +0.7}_{-0.7}$ $1.5^{\rm +1.5}_{-0.5}$ $8.4^{\rm +4.1}_{-2.8}$
CEMEKL 0.95 $1.6^{\rm +0.8}_{-0.7}$ $43.7^{\rm +3.2}_{-3.1}$ $3.3^{\rm +2.3}_{-1.3}$ $0.72^{\rm +0.09}_{-0.12}$ - $11.8^{\rm +13.3}_{-5.1}$ $1.2^{\rm +1.3}_{-0.7}$ $1.6^{\rm +2.1}_{-0.9}$ $1.9^{\rm +0.5}_{-0.5}$ $6.8^{\rm +3.3}_{-1.9}$
MKCFLOW 0.95 $1.4^{\rm +0.4}_{-0.3}$ $44.5^{\rm +2.0}_{-0.5}$ $4.0^{\rm +1.0}_{-0.8}$ $0.68^{\rm +0.03}_{-0.06}$ <0.003 $48.5^{\rm +17.4}_{-4.9}$ $1.7^{\rm +1.1}_{-0.8}$ $1.3^{\rm +0.4}_{-0.5}$ $2.0^{\rm +1.5}_{-0.8}$ $6.3^{\rm +0.2}_{-0.2}$
accretion flow 0.94 $1.5^{\rm +0.8}_{-0.7}$ $43.9^{\rm +3.3}_{-3.2}$ $3.3^{\rm +2.5}_{-1.2}$ $0.72^{\rm +0.09}_{-0.12}$ $0.8^{\rm +0.4}_{-0.2}$ $20.0^{\rm +9.9}_{-6.1}$ $1.3^{\rm +1.0}_{-0.6}$ $1.6^{\rm +2.1}_{-0.8}$ $2.0^{\rm +1.5}_{-0.8}$ $6.6^{\rm +3.2}_{-1.8}$

Bright phase 1

                    
MEKAL 0.95 $1.9^{\rm +1.0}_{-0.9}$ $42.3^{\rm +3.7}_{-3.5}$ $1.8^{\rm +2.2}_{-0.7}$ $0.73^{\rm +0.10}_{-0.15}$ - $4.6^{\rm +4.5}_{-1.3}$ :=1.0 $4.9^{\rm +8.7}_{-3.0}$ $5.6^{\rm +5.5}_{-2.5}$ $16.4^{\rm +11.9}_{-6.1}$

Bright phase 2

                    
MEKAL 1.03 $1.8^{\rm +1.6}_{-1.3}$ $44.0^{\rm +6.1}_{-5.6}$ $1.6^{\rm +2.9}_{-0.8}$ $0.82^{\rm +0.11}_{-0.14}$ - $4.7^{\rm +11.4}_{-2.2}$ :=1.0 $2.0^{\rm +7.9}_{-1.5}$ $2.8^{\rm +5.5}_{-1.6}$ $8.0^{\rm +9.7}_{-3.7}$

Faint phase

                    
MEKAL 1.08 $3.2^{\rm +4.3}_{-3.2}$ $25.1^{\rm +22.8}_{-19.2}$ $3.4^{\rm +3.5}_{-1.4}$ $0.85^{\rm +0.05}_{-0.07}$ - $7.1^{\rm +4.8}_{-2.7}$ :=1.0 $2.7^{\rm +7.1}_{-7.1}$ $2.0^{\rm +1.1}_{-1.1}$ $3.4^{\rm +8.7}_{-2.4}$

Minimum phase

                    
MEKAL 1.32 <3.0 $50.2^{\rm +17.8}_{-12.6}$ $14.7^{\rm +11.6}_{-6.7}$ 1.0 - $3.2^{\rm +9.9}_{-1.7}$ :=1.0 $0.09^{\rm +1.09}_{-0.03}$ $0.15^{\rm +0.06}_{-0.47}$ $1.1^{\rm +1.1}_{-0.4}$

2005/08/15c

                    
MEKAL 1.08 $3.6^{\rm +0.7}_{-0.6}$ $45.3^{\rm +2.2}_{-2.2}$ $15.6^{\rm +15.5}_{-10.9}$ 1.0 - $2.7^{\rm +16.0}_{-1.2}$ :=1.0 $25.9^{\rm +13.2}_{-7.7}$ $38.0^{\rm +13.4}_{-8.3}$ $\rm 104^{+42}_{-27}$

Notes. (a) The soft component in all models is a multi-temperature black body with maximum temperature $kT_{\rm bb}$. (b) Bolometric black-body luminosities are determined as $L_{\rm bb,bol}=2\pi d^2F_{\rm bb}$, and the model fluxes by means of the CFLUX model. (c) Simultaneous fit to EPIC and RGS data.


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