Table 3
Input parameters for the Vela X-1 donor models.
Parameter | Value | ||
---|---|---|---|
T* [kK] | 25.5 | ||
R* [R⊙] | 28.4 | ||
log (L [L⊙]) | 5.485 | ||
M* [M⊙] | 20.2 | ||
log (g [cm s−2]) | 2.84 | ||
D∞ | 11 | ||
vmic [km s−1] | 10 | ||
Element | Mass fraction | Rel. ab.a | |
XHb | 0.65 | 0.89 | |
XHeb | 0.336 | 1.35 | |
XCb | 5.0 × 10−4 | 0.17 | |
XNb | 1.8 × 10−3 | 2.11 | |
XOb | 7.0 × 10−3 | 0.88 | |
XNec | 1.3 × 10−3 | 1.0 | |
XMgb | 7.0 × 10−4 | 1.0 | |
XAlb | 7.0 × 10−5 | 1.31 | |
XSib | 5.5 × 10−4 | 0.75 | |
XPb | 6.4 × 10−6 | 1.0 | |
XSb | 5.0 × 10−4 | 1.0 | |
XClc | 8.2 × 10−6 | 1.0 | |
XArc | 7.3 × 10−5 | 1.0 | |
XKc | 3.1 × 10−6 | 1.0 | |
XCac | 6.1 × 10−5 | 1.0 | |
XFeb,d | 1.4 × 10−3 | 1.0 | |
Notes. (a) Ratio of mass fractions relative to their solar value from Asplund et al. (2009). (b) Abundance taken from Giménez-García et al. (2016). (c) Solar abundance assumed, taken from Asplund et al. (2009). (d) Fe also includes the iron group elements Sc, Ti, V, Cr, Mn, Co, and Ni. See Gräfener et al. (2002) for relative abundances.
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