emsao is an
IRAF task in the
rvsao package which
finds emission lines, computes redshifts for each identified line,
and combines them into a single radial velocity. The results may be
graphically displayed and/or printed in several formats.
"RVSAO 2.0: Digital Redshifts and Radial Velocities"
Michael J. Kurtz and
Douglas J. Mink, 1998,
PASP, v. 110, pp. 934-977.
"EMSAO: Radial Velocities from Emission Lines in Spectra"
D.J. Mink and W.F. Wyatt (1995), in Astronomical Data Analysis
Software and Systems IV, ASP Conf. Ser., Vol. 77, eds. R.A. Shaw,
H.E. Payne, and J.J.E. Hayes, p. 496-499.