Erratum: A NICER Viewing Angle on the Accretion Stream of Vela X-1 (2023 ApJ 950 170)

When this correction is applied to the model appearing in Figure 7, the overprediction of the Fe Kα flux vanishes and is replaced by a persistent underprediction at all phases. A corrected version of Figure 7 is given below (Figure 7). This corrected result is consistent with previous results by S. Watanabe et al. (2006). This correction does not invalidate the paper’s conclusions regarding additional reflection from the accretion stream. Rather, it is now apparent that the companion alone cannot account for the emission in any phase. This reinforces the role of the accretion stream as the most likely candidate for the observed emission lines. The exact contribution from the stream likely depends on how much of the stream is visible at each phase. We expect higher contributions around phases 0.35 and 0.65. In Figure 7 the highest accretion stream contribution is between 0.3–0.4 and around 0.7. Short observations of other fluorescence lines are required to study the geometry of the accretion stream further.