Comment on a paper by M. A. Bautista ``Atomic data from the Iron Project. XVI. Photoionization cross sections and oscillator strengths for Fe V''

Abstract

Recently, Bautista (1996, A&AS, 119, 105) reported new calculations of photoionization cross sections for Fe V, and compared them with the earlier results of Reilman & Manson (1979, ApJS, 40, 815) and Verner et al. (1993, Atomic Data Nucl. Data Tables, 55, 233). Bautista claimed that beyond 10 Ry the new cross sections ``converge well toward the results by Reilman and Manson'', whereas ``the calculations by Verner et al. still underestimate the cross section by almost factor of two''. We show that Bautista erroneously compared the total (summed over shells) cross sections from Reilman & Manson with the partial 3d-shell cross sections from Verner et al. Actually, the total cross sections from Verner et al. and Reilman & Manson agree within 3% at all energies.