Table 3: Parameters of NSs in SXRTs.
Source $\dot{M}$ , $M_\odot$ yr^-1 $L_\gamma ^\infty$ , erg s^-1 $T_{\rm s}^\infty$ , eV $R^\infty$ , km Reference

Aql X-1 $1.0\times10^{-10}$ $5.3\times 10^{33}$ 113 15.9 Rutledge et al. (2002b): Table 6, fit 10

Cen X-4 $1.4\times 10^{-10}$ $3.1\times 10^{32}$ $\;$ 76 $^{\ast }$ 12.9 Rutledge et al. (2001): Table 4

4U 1608-522 $4.2\times 10^{-10}$ $4.1\times 10^{33}$ $\;\:$ 170 $^{\ast }$ 9.4 Rutledge et al. (1999): Table 22

KS 1731-260 $5.1\times 10^{-9}$ $4.3\times 10^{33}$ 110 15 Wijnands et al. (2002): Table 1, fit 2

SAX J1808.4-3658 $5.0\times 10^{-12}$ $\la$ $1.0\times 10^{31}$ - - Campana et al. (2002): Sect. 2.2

* Nonredshifted.

**Table 3:** Parameters of NSs in SXRTs.
Source	$\dot{M}$ , $M_\odot$ yr^-1	$L_\gamma ^\infty$ , erg s^-1	$T_{\rm s}^\infty$ , eV	$R^\infty$ , km	Reference
Aql X-1	$1.0\times10^{-10}$	$5.3\times 10^{33}$	113	15.9	Rutledge et al. (2002b):	Table 6, fit 10
Cen X-4	$1.4\times 10^{-10}$	$3.1\times 10^{32}$	$\;$ 76 $^{\ast }$	12.9	Rutledge et al. (2001):	Table 4
4U 1608-522	$4.2\times 10^{-10}$	$4.1\times 10^{33}$	$\;\:$ 170 $^{\ast }$	9.4	Rutledge et al. (1999):	Table 22
KS 1731-260	$5.1\times 10^{-9}$	$4.3\times 10^{33}$	110	15	Wijnands et al. (2002):	Table 1, fit 2
SAX J1808.4-3658	$5.0\times 10^{-12}$	$\la$ $1.0\times 10^{31}$	-	-	Campana et al. (2002):	Sect. 2.2

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