xcsao is an IRAF task in the rvsao package which provides an interactive facility to determine redshifts and velocity dispersions by cross-correlating a spectrum against template spectra of known velocities as described by Tonry and Davis 1979, A.J., 84, 1511).



Cursor Commands



PASP Paper on XCSAO and RVSAO package [ADS Abstract] [local abstract]

"RVSAO 2.0: Digital Redshifts and Radial Velocities" Michael J. Kurtz and Douglas J. Mink, 1998, PASP, v. 110, pp. 934-977.

ADASS Paper on XCSAO [abstract] [full text]

"XCSAO: A Radial Velocity Package for the IRAF Environment"
Kurtz, M.J., Mink, D.J., Wyatt, W.F., Fabricant, D.G., Torres, G., Kriss, G., and Tonry, J.L. 1992, in Astronomical Data Analysis Software and Systems I, ASP Conf. Ser., Vol. 25, eds. D.M. Worral, C. Biemesderfer, and J. Barnes, 432.

Last updated February 6, 2002 by Doug Mink dmink@cfa.harvard.edu

Telescope Data Center [rvsao] [xcsao] [emsao] [sumspec] [linespec]