Install iraf-rvsao by entering the following commands in the terminal:
sudo apt update sudo apt install iraf-rvsao
Description:
IRAF package to obtain radial velocities from spectra
This package obtains radial velocities and velocity dispersions using cross-correlation methods or emission line fits. It consists of several SPP tasks: . * XCSAO and PXCSAO: cross-correlate spectra, * EMSAO and PEMSAO: find emission lines in spectra, * BCVCORR: solar system barycentric velocity correction, * SUMSPEC: add and/or modify spectra, * LINESPEC: synthetic emission line templates, * EQWIDTH: equivalent widths of lines in spectra, * WLRANGE: wavelength overlap range for a list of spectra, * LISTSPEC: list pixel, wavelength, delta wavelength, and/or pixel value for spectrum image, * PIX2WL: wavelength at a given pixel in a spectrum, * WL2PIX: pixel at a given wavelength in a spectrum, * VELSET Artificially change the redshift of (log-wavelength) spectra
Homepage: http://tdc-www.harvard.edu/iraf/rvsao/
Version: 2.8.3-1
Section: universe/science