LARS raw data (Melinder et al. 2023)

Raw data used for Melinder et al. 2023.
The Lyman alpha Reference Sample XIV: 
Lyman alpha imaging of 45 low redshift star-forming galaxies and inferences on global emission.

Abstract:
We present Ly alpha imaging of 45 low redshift star-forming galaxies observed with
the Hubble Space Telescope.  The galaxies have been selected to have moderate
to high star formation rates using far-ultraviolet (FUV) luminosity and H alpha equivalent width
criteria, but no constraints on Ly alpha luminosity. We employ a
pixel stellar continuum fitting code to obtain accurate continuum subtracted Ly alpha, H alpha and
H beta maps. We find that Ly alpha is less
concentrated than FUV and optical line emission in almost
all galaxies with significant Ly alpha emission. We present global measurements of Ly alpha and other
quantities measured in apertures designed to capture all of the Ly alpha emission.
We then show how the escape fraction of Ly alpha relates to a number of other
measured quantities (mass, metallicity, star formation, ionisation parameter,
and extinction). We find that the escape fraction is strongly anti-correlated
with nebular and stellar extinction, weakly anti-correlated with stellar
mass, but no conclusive evidence for correlations with other quantities. We show
that Ly alpha escape fractions are inconsistent with common dust extinction laws,
and discuss how a combination of radiative transfer effects and clumpy dust
models can help resolve the discrepancies. We present a star
formation rate calibration based on Ly alpha luminosity, where the equivalent width
of Ly alpha is used to correct for non-unity escape fraction, and show that this
relation provides a reasonably accurate SFR estimate, but with large scatter. 
We also show stacked growth curves of Ly alpha for
the galaxies that can be used to find aperture loss fractions at a given