A forced-photometry subtraction pipeline that removes continuum galaxies from narrowband imaging recovers 23 diffuse Lyman-alpha blobs missed by standard LAE-based selection, yielding 112 LABs at z≈3.1 whose number density is ~4x higher in proto-cluster regions.
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ODIN: A New Lyman Alpha Blob Selection Method, Sample, and Statistical Analysis at $z\sim3.1$
A forced-photometry subtraction pipeline that removes continuum galaxies from narrowband imaging recovers 23 diffuse Lyman-alpha blobs missed by standard LAE-based selection, yielding 112 LABs at z≈3.1 whose number density is ~4x higher in proto-cluster regions.