All Tables

Table 1: XMM-Newton on-axis observation log of 4U 1850-087. Two observations were performed. The MOS1, MOS2 and pn cameras all used the medium thickness filter.
Table 2: Best-fit continuum parameters when the RGS1, RGS2, pn, MOS1 and MOS2 4U 1850-087 spectra were fit simultaneously. dbb = disk-blackbody, pow = power-law, ctt = Comptonization model COMPTT in XSPEC. $\alpha$ is the power-law photon index, $kT_{\rm in}$ the inner disk temperature, $r{\rm _{in}}(\cos i)^{0.5}$ is the inner disk radius for a distance of 8 kpc, i is the disk inclination angle and $R{\rm _{bb}}$ is the blackbody radius. For the COMPTT model, $kT{\rm _0}$ is the temperature of the "seed'' photons, $kT{\rm _e}$ is the electron temperature (fixed at 70 keV) and ${\rm\tau _p}$ is the plasma optical depth.
Table 3: Photoelectric absorption results towards 4U 1850-087 (see Table 2 for the continuum emission parameters). The edge energies were fixed at 0.54, 0.71 and 0.87 keV for O, Fe and Ne, respectively. $\tau _{\rm edge}$ is the absorption depth. $N_{\rm Z}$ is the element column density (in units of 10¹⁷ cm^-2) calculated using the Henke et al. (1993) cross sections. $N_{\rm H}$ is the hydrogen column density implied by $N_{\rm Z}$ , in units of 10²¹ cm^-2, assuming the ISM abundances of Wilms et al. (2000).