8.6k citations · 22.6k across the 247 of their papers we have counts for
1 paper · 1 filter
P. Bonifacio, E. Caffau, M. Centurion +2
By using UV spectra for the O star HD 93521 taken with the ORFEUS II echelle spectrograph, we determine an ``astrophysical'' f value for the SII 94.7 nm line: f = 0.00498 (+0.00172…