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Monthly Notices of the Royal Astronomical Society: Letters
The Lyman alpha (lya) line of Hydrogen is a prominent feature in the spectra of star-forming galaxies, usually redshifted by a few hundreds of km/s compared to the systemic redshift. This large offset hampers follow-up surveys, galaxy pair statistics and correlations with quasar absorption lines when only lya is available. We propose diagnostics that can be used to recover the systemic redshift directly from the properties of the lya line profile. We use spectroscopic observations ofdoi:10.1093/mnrasl/sly058 fatcat:jlqksurx3bca5jajtkgyljsk6m